Nonresidents, New Immigrants & ITIN Filers

Fatima Hassan has been in Minneapolis for eleven months the first time an American tax season happens *to* her. It's March 2025. The bus shelter on Franklin Avenue has a poster: "File by April 15." Her cousin says you need a Social Security number to file, and Fatima doesn't have one yet — her work authorization is still in process. A man at a strip-mall office with a hand-lettered sign — *"IMMIGRATION + TAXES, WE FIX EVERYTHING"* — tells her that for $500 he can get her "registered with the IRS" and that filing wrong "goes on your immigration record." She walks out with her heart pounding and three questions she can't put down.

• "I have no Social Security number — how do I even file?"
• "Am I a 'resident' for taxes or not? Which form is even mine?"
• "If I get any of this wrong — or file at all — will it hurt my immigration case?"

This lesson exists to answer those three questions, in that order of fear but in the order the tax system actually resolves them. Here are the answers up front, because you should not have to read forty minutes to breathe: (1) There is a number for people who can't get an SSN — the ITIN — and the IRS issues it precisely so you can comply. It's free from the IRS, and there's an application route where you never mail your passport anywhere. (2) There is a clear, mechanical test — a day-count — that tells you which return to file. Not a judgment call, not a status interview: arithmetic. (3) Filing correctly is the protective move. The tax law requires it regardless of immigration status, immigration attorneys *ask* for tax transcripts as evidence of good moral character, and no legitimate service charges a fee to "fix your status" through taxes — that pitch is the scam, and this lesson will teach you its every tell.

Three people carry this lesson. Fatima Hassan, 34, a certified nursing assistant earning $41,000 in Minneapolis — she arrived in April 2024, filed her first return with an ITIN, and now files with an SSN; her first year is the *dual-status* story. Mei Chen, 20, an F-1 undergraduate from Shanghai at the University of Minnesota — she is the *nonresident student* story: Form 1040-NR, Form 8843, a $5,000 treaty benefit, and the FICA tax she should never pay. And Arjun & Deepa Nair, 29 and 27, who land from Bengaluru on October 1, 2026 for Arjun's H-1B job — they are the *arrived-late-in-the-year* story, where two elections turn a clumsy first filing into a much better one. One promise before we start: nothing in this lesson requires you to be anything other than what you are. The tax system has a lane for every one of these situations. We're going to find yours.

Everything in this lesson hangs on one distinction, so let's hang it on the wall first. For tax purposes, every person in the United States is exactly one of two things each year: a resident alien (or citizen) or a nonresident alien. The word "alien" is the tax code's word, not ours — it means simply *not a US citizen*. Which side of the line you're on changes almost everything about your return.

A resident for tax purposes is taxed like a citizen: on worldwide income — the Minneapolis paycheck *and* the rent from an apartment back home *and* the interest on a Nairobi savings account — reported on the ordinary Form 1040, with the standard deduction ($16,100 single for tax year 2026), the full menu of credits, and every rule you've learned in this curriculum. A nonresident alien is taxed only on US-source income — money earned here or paid from here — on a different form, Form 1040-NR, generally with *no standard deduction* and a much shorter credit menu. Income from back home simply isn't the IRS's business for a nonresident.

Read the two columns as a trade, because that's what they are. The resident side taxes *more income* but gives *more machinery* — the $16,100 standard deduction alone shelters more income than many new arrivals earn in their first partial year, and credits like the Child Tax Credit can pay cash. The nonresident side taxes *less income* (US-source only) but strips the machinery: no standard deduction, no EITC ever, no education credits, no joint filing. Neither side is "better" in general — which is why the rest of this lesson is about knowing exactly which side you're on, and about the handful of doors (elections, treaties) that let you choose.

Here is the single most misunderstood fact in this whole area, and the one that disarms the strip-mall hustler's pitch: tax residency and immigration status are two different legal systems that mostly don't talk to each other. Immigration law asks *may you be here, and on what terms?* Tax law asks only *were you here, and for how many days?* You can be a tax resident with no immigration status at all, and a tax nonresident while holding a perfectly valid long-term visa.

• A software engineer on a valid H-1B who arrived in October is a tax nonresident her first year — too few days. Valid visa, nonresident for tax.
• An undocumented worker who has lived in Chicago for six years is a tax resident — the day count says so — and owes US tax on worldwide income, files a 1040, and can do so with an ITIN. The tax law does not ask about papers; it asks about presence.
• An F-1 student in year three, physically present 351 days, is a tax nonresident — a special rule (Section 7) makes her days not count at all.
• A green-card holder who spent the entire year in Seoul is a tax resident anyway — the card itself decides (next section).

Why does the tax law work this way? Because Congress wanted a tax net based on physical facts, not immigration categories that shift and lag. For you, the practical meaning is liberating: the question "am I a resident for taxes?" has a mechanical answer you can compute yourself, today, from your own passport stamps. Nobody's opinion is required — not a preparer's, not a notario's, not even the IRS's. Two tests decide it, and only two: the green-card test and the substantial presence test. Meet either one → resident. Meet neither → nonresident.

The first test is one sentence long. If you are a lawful permanent resident — a green-card holder — at any time during the calendar year, you are a US tax resident. No day counting. The IRS's rule for the start: your residency begins on "the first day in the calendar year on which you are present in the United States as a lawful permanent resident." Get the card while abroad, and it starts the first day you set foot here carrying it.

Three consequences people miss. First, days don't matter. A green-card holder who spends 320 days a year running the family business abroad is still a full US tax resident, owing US tax on the business income (usually offset by the foreign tax credit, but owed a return regardless). Second, it doesn't fade. The status ends for tax purposes only when the card is formally surrendered (Form I-407), revoked, or administratively/judicially determined abandoned — *not* when it expires in your wallet, and not when you move away. People have owed years of unfiled US returns because they assumed leaving the country ended the obligation. Third, treaties are complicated for card holders. A green-card holder living in a treaty country can sometimes elect to be treated as a nonresident under a treaty tie-breaker — but that requires Form 8833, risks immigration consequences (USCIS may read it as abandoning residence), and belongs in a professional's hands. For this lesson's audience, the rule to carry: card = resident, file the 1040.

For Fatima, whose permanent residence is the goal her whole file is building toward, this test is the *future* one. The test that decided her first year — and decides the first year for nearly every new arrival — is the second one.

The substantial presence test (SPT) is the day-count test, and it has exactly two conditions, both of which must be true for the year you're checking:

1. You were physically present in the US on at least 31 days during the current year, AND
2. Your weighted three-year total reaches 183 days: all of this year's days, plus one-third of last year's days, plus one-sixth of the days from the year before that.

Now watch it decide Fatima's first year, 2024. She landed at MSP on April 14, 2024 — her first time ever in the United States — and didn't leave. April 14 through December 31 is 262 days. Her weighted total: 262 + ⅓ × 0 + ⅙ × 0 = 262, because she'd never been here in 2023 or 2022. Both conditions pass — 262 ≥ 31, and 262 ≥ 183 — so Fatima became a US tax resident in 2024 itself, months before she had a work permit, an SSN, or a single American paycheck. Presence did it, nothing else. (What kind of resident her *split* year makes her — that's Section 9's dual-status story.)

The second worked example in the visual is the one that shows why the fractions exist. A consultant who spends 120 days here every single year never becomes a resident: 120 + ⅓×120 + ⅙×120 = 120 + 40 + 20 = 180 — three days short, every year, forever. The weights are calibrated so that habitual visitors hovering around a third of the year stay out, while anyone averaging above roughly 122 days a year (122 + 40.7 + 20.3 ≈ 183) tips in. That's the design: casual presence no, sustained presence yes. If your life is cross-border — you'll meet this arithmetic every January, and the smart move is to run it *before* year-end while you can still choose which side of 183 to land on.

Before you trust any day count, subtract the days the law itself ignores. Five kinds of presence never count toward the substantial presence test:

• Commuter days — you live in Canada or Mexico and regularly commute to a US job; the workdays don't count.
• Transit days — under 24 hours in the US between two foreign points (an airport connection through JFK is not a 'day in the US').
• Crew days — days as a crew member of a foreign vessel.
• Medical days — days you couldn't leave because of a medical condition that *arose while you were here* (documented; a condition you arrived with doesn't qualify).
• Exempt-individual days — the big one for students, teachers, and researchers on F, J, M, or Q status. So big it gets its own section, next.

And one escape hatch even for people who *pass* the test: the closer connection exception. If you were here fewer than 183 days in the current year (the weighted formula got you there via prior years), you keep a tax home in a foreign country, and your ties — home, family, bank, driver's license, voting — are demonstrably closer to that country, you can file Form 8840 by the return deadline and remain a nonresident despite the arithmetic. It's the law's acknowledgment that the formula sometimes catches genuinely foreign lives; the form is your sworn inventory of ties. Students past their five exempt years have a similar, slightly different facts-and-circumstances version (noted in the next section). Miss the filing deadline, though, and the exception is generally lost for the year — this is a claim-it-or-lose-it door.

Now the rule that governs several hundred thousand new arrivals a year, including Mei Chen. An exempt individual is not exempt from *tax* — the name misleads everyone once — she is exempt from *day-counting*. Her days physically in the US count as zero for the substantial presence test. Zero days means the test can never be met, which means she stays a nonresident alien no matter how continuously she's here.

Who qualifies, and for how long:

Mei's timeline makes the five-year clock concrete. She first entered on August 20, 2025 — so 2025, a four-month sliver, was exempt year one of five. 2026 (this lesson's year) is year two; 2027, 2028, and 2029 follow. Through all five, her days count as zero: in 2026 she's physically here 351 days and her SPT count is 0. Then comes January 1, 2030 — the flip: year six, her exemption is spent, her days start counting like anyone else's, and (still enrolled, still here) she'll cross 183 real days by early July 2030 and become a resident that year — new form, new rules, standard deduction, FICA withholding begins. The flip catches thousands of PhD students by surprise every year. It shouldn't catch you: it's printed on your own entry stamp plus five.

Two footnotes on the clock. First, the five years are cumulative across a lifetime, not per visa: a year of high-school exchange at 16 burns one of the five. Second, a student past five years *can* stay a nonresident under a closer-connection showing (no intent to reside permanently, substantial compliance with the visa — claimed on Form 8843's questions), but it's facts-and-circumstances, not automatic. And every exempt year carries a paperwork duty — Form 8843 — that Section 20 walks in full, because skipping it risks the very day-exclusion this whole section rests on. For now, the headline for Mei: nonresident, Form 1040-NR, and — Section 21 — no Social Security or Medicare tax at all on her campus job.

Passing the substantial presence test in your arrival year does not make you a resident from January 1. The IRS's rule: your residency starting date is "the first day you are present in the United States during that calendar year" — the year the test is met. For Fatima, that's April 14, 2024, the day she landed. Everything before it, she was a nonresident; everything from it, a resident. One calendar year, two tax lives — the dual-status year that Section 9 dissects.

One refinement worth knowing: the nominal-presence rule. Up to 10 days of presence can be disregarded in setting your *starting date* (not the 183-day count) if, during those days, you still had a closer connection to a foreign tax home. The classic case: a six-day apartment-hunting trip in February, home to pack, then the real move in April. Without the rule, the February trip would drag the residency start back to February — making two extra months of worldwide income taxable. With it, the start stays at the April move. Had Fatima made such a scouting trip, she could have disregarded it; in fact her April 14 landing was her first entry, so her date was clean. Keep the rule in your pocket if your own move happens in stages — and document the foreign ties for the disregarded days.

A dual-status year is a year you're a nonresident for part and a resident for the rest — almost always the year you arrive (or the year you leave, mirrored). It is not a special status so much as a seam: two sets of rules stitched together at your residency starting date. Everything turns on which side of the seam a dollar of income lands.

• Nonresident portion (Fatima: January 1 – April 13, 2024): the US taxes US-source income only. Fatima earned $6,300 at her job back home in Mogadishu those months. Foreign wages, foreign months, nonresident — the US tax on it is zero, forever. It never appears on any US form.
• Resident portion (April 14 – December 31, 2024): the US taxes worldwide income — anything received while resident, from anywhere. Fatima's old employer paid out her final wages and severance — $2,700 — on June 3, 2024, into her account back home, and her foreign savings account added $90 of interest May–December. Both received while resident → both US-taxable: $2,790 on her first US return.

Sit with the June back-pay for a moment, because it teaches the whole concept. The same dollars, for the same work, performed entirely in Mogadishu before she moved — taxable in the US purely because the money *arrived* on June 3 instead of, say, March 20. Had her employer settled up three weeks before her flight, US tax on it: $0, and her first return would have shown just $90 of interest and about $9 of tax. Timing against the seam moved ~$270. The lesson generalizes: if you can control when income arrives around a move, the seam is a real planning line — money owed to you from your pre-US life is cleanest received before the residency starting date.

Now the restrictions, because a dual-status year clips the resident toolkit. In a dual-status year you cannot take the standard deduction — at all, not even prorated; only itemized deductions (for Fatima: none). You cannot file a joint return (unless you take an election coming in Section 11), cannot use head-of-household rates, and cannot claim the EITC or the education credits. If you're married, your default status is married filing separately. So Fatima's first-return math ran: income $2,790, deductions $0, taxable $2,790, tax at the 10% bracket (tax year 2024's rates — her arrival year) = $279. She owed $279 and a completed return — that was the entire, whole, un-terrifying size of her first encounter with the IRS. She paid it with the return in April 2025. For a first filing that half the neighborhood had told her could "ruin her case," the anticlimax is the point.

The dual-status return's mechanics confuse even preparers, so here is the assembly diagram in words. The return is the form matching your status on December 31; the other form rides along as a statement covering the other part of the year.

Two practical notes that save real grief. Dual-status returns are paper returns — they're on the short list even paid preparers are excused from e-filing, so expect to print, sign in ink, and mail (with a tracking receipt — your proof of filing). And because Fatima had no SSN, her paper return carried one more passenger: Form W-7, stapled to the front, applying for the ITIN that would let the IRS process everything behind it. That's the standard route — the ITIN application and the first return travel together, and Section 15 takes it from here.

Arjun Nair lands at MSP on October 1, 2026, H-1B in hand, Deepa beside him on an H-4, a Bengaluru apartment sublet behind them and a $96,000 health-tech job ahead. Run his substantial presence test for 2026: October 1 to December 31 is 92 days; weighted, 92 + 0 + 0 = 92 — far short of 183. The test says *nonresident for all of 2026*, and by default his first filing is Form 1040-NR. But 'default' is doing a lot of work in that sentence. There are three doors here, and the difference between the first and the third is $1,603 of tax. Congress built the doors deliberately — they exist so a genuine new immigrant isn't stuck with a nonresident's stripped-down return for a year they truly moved here. Let's walk them with real numbers: Arjun's US wages October–December were $24,000, with about $1,200 of Minnesota tax withheld; his January–September Bengaluru salary converts to about $27,000, on which he paid about $2,600 of Indian income tax (illustrative conversion — the mechanics, not the rupee rate, are the lesson).

1. Door A — take the default: Form 1040-NR, married filing separately. (Nonresidents can never file jointly.) US-source wages $24,000, minus itemized deductions — his $1,200 of state tax withheld; there's no standard deduction on this door and no way to claim Deepa at all. Taxable $22,800 → tax $2,488. His India salary stays outside US tax, but so does every resident benefit.
2. Door B — the first-year choice (§7701(b)(4)). Because he'll easily meet the substantial presence test in 2027, Arjun may ELECT to be treated as a resident from his first day here — turning 2026 into a dual-status year (resident from October 1). Requirements: at least 31 consecutive days present in 2026 (October 1–31 ✓), presence on at least 75% of the days from the start of that 31-day run through December 31 (he never left: 100% ✓), and actually meeting the SPT in 2027 (a June formality once he's living here). His residency start becomes October 1 — the first day of that earliest 31-day period. Alone, this door barely moves his money — dual-status still means no standard deduction and no joint return, and his Jan–Sep India wages stay outside (earned while nonresident). Its real purpose is as the key that unlocks—
3. Door C — the §6013(h) election: full-year married-filing-jointly residents. A couple where at least one spouse is a dual-status arrival who's a resident at year-end may jointly elect to be treated as residents for the entire year and file a joint 1040. The price: the WHOLE year's worldwide income goes on the return — including the $27,000 of Bengaluru salary. The prize: the $32,200 MFJ standard deduction (tax year 2026), joint brackets, the resident credit menu, and the foreign tax credit to absorb the double-tax overlap. The math: worldwide $51,000 − $32,200 = taxable $18,800 → pre-credit tax $1,880; foreign tax credit for the Indian tax, capped at the US tax attributable to the foreign wages ($1,880 × 27,000⁄51,000 = $995) → final tax $885.

Door C wins by $1,603 — and notice *why*: the standard deduction plus the foreign tax credit more than neutralize the extra $27,000 the election drags in. That's the usual shape for genuine movers (income taxed abroad + a big deduction at home), but it is not a law of nature — a spouse with large untaxed foreign income, or foreign income taxed at very low rates, can flip the comparison. Run all the doors with your own numbers before electing. Two mechanical footnotes. First, the first-year choice can't be *filed* until the 2027 substantial presence test is actually met (around June 2, 2027 for Arjun) — so the standard play is Form 4868 for an automatic extension, then file in mid-June; a statement electing the choice rides with the return. Second, the joint election needs both signatures and — this is Deepa's entrance — a taxpayer number for each spouse: her Form W-7 goes on top of the joint return, checking reason box (e), *spouse of a US resident alien*. One envelope: election statements, W-7, certified passport documentation, return.

Now the nonresident return itself — the form Mei files every spring and Arjun would file behind Door A. Form 1040-NR taxes exactly two channels of income, at two very different meters:

• Effectively connected income (ECI) — income connected to work or business *in* the US: wages from a US job, self-employment here, and (by election) US rental income. ECI is taxed at the same graduated brackets as residents (10%, 12%, 22%…), after allowable deductions. Mei's library wages are ECI. This is the channel most of this lesson lives in.
• FDAP income — the acronym means *fixed, determinable, annual, or periodical*: US-source investment-type income not connected to a US business — dividends from US stocks, royalties, certain rents, prizes. FDAP is taxed at a flat 30% (or a lower treaty rate), with no deductions, usually collected by withholding at the source before you ever see the money, and reconciled on the 1040-NR's Schedule NEC (Not Effectively Connected).

And two famous *non*-taxes that surprise newcomers in the pleasant direction. US bank-deposit interest paid to a nonresident is exempt by statute — Mei's $40 of savings interest simply doesn't go on her return (give the bank a Form W-8BEN so it knows not to withhold). And capital gains on US stocks are generally NOT taxed to a nonresident at all — unless the seller was physically present in the US 183 days or more during that year, in which case a flat 30% applies. Note the trap in that sentence for students: Mei is present 351 days — her *exempt-individual* status keeps her a nonresident for the SPT, but this 183-day capital-gains rule counts actual days, so a student who day-trades US stocks from her dorm owes the flat 30% on the gains. Nonresident ≠ invisible.

Who must file: any nonresident engaged in a US trade or business during the year — and having a US job counts — plus anyone with US income whose withholding didn't cover the tax, or who wants a refund of over-withheld tax, or who needs to claim a treaty position. The deadlines have a quirk worth memorizing: April 15 if you received wages subject to US withholding (Mei's case), but June 15 if you didn't — the IRS's own words: not an employee receiving wages subject to withholding → "file by the 15th day of the 6th month after your tax year ends." Scholarship-only students and investors get the June date automatically, no extension form needed.

Here's where the nonresident return gets thin, and where knowing the exact edges saves you from both overpaying and overclaiming. The standard deduction does not exist on Form 1040-NR — with precisely one exception on the planet: students and business apprentices from India, whose treaty (Article 21(2) of the US–India treaty) grants them the same standard deduction residents get — $16,100 for a single filer in tax year 2026. Everyone else itemizes or deducts nothing. The itemized menu on Schedule A (Form 1040-NR) is short: state and local income taxes (capped like residents' — $40,000, or $20,000 married filing separately, in 2026), gifts to US charities (US ones — the charity across the ocean doesn't count here), and casualty/theft losses from federally declared disasters. For a student like Mei, the whole itemized story is usually one number: the state income tax withheld from her paychecks — $120.

The credit menu is where SSN and ITIN rules bite hardest, and 2025–2026 law tightened them. This table is the lesson's most load-bearing exhibit — it answers "which credits can our family actually get?" for every mix of status and number. All rows are tax-year 2026, verified against the current 1040-NR instructions and the 2025 tax law:

Read that table the way Fatima's neighbors will ask about it. A Minneapolis family where dad has an ITIN, mom has an SSN, and the kids have SSNs: file jointly and the CTC survives — the at-least-one-spouse rule is exactly for them. A family where both parents have ITINs and the kids have SSNs: the CTC is gone for 2025+, but the $500 Credit for Other Dependents per child remains — smaller, but real, and claiming it correctly keeps the record clean. And when a storefront preparer promises an ITIN family the EITC — the table is why you now know, before any letter arrives, that the promise is the preparer's fraud and your liability. That exact scheme is Section 25's Scam Watch.

Time to hold the actual form. Mei's 2026 numbers, assembled from the last two sections: library wages $6,800 (W-2), of which $5,000 is exempt under the US–China treaty's student article (Section 19 explains how that claim works); $14,000 tuition scholarship (tax-free under §117 because it pays qualified tuition — it appears on no line at all); $40 bank interest (statutorily exempt for nonresidents — also no line); $120 Minnesota income tax withheld (her one itemized deduction); $200 federal income tax withheld. Watch each number land:

The reading order that makes the form make sense: Filing status — Single (the 1040-NR offers only single, married filing separately, qualifying surviving spouse, and estate/trust; married-filing-jointly and head-of-household do not exist here). Line 1a — $1,800: only the *taxable* wages. Her W-2 box 1 shows $1,800 because her employer honored the treaty at the payroll level; the exempt $5,000 arrived on a different slip — Form 1042-S — which is the information return for treaty-exempt and scholarship payments to foreign persons. Line 1k — $5,000: the treaty-exempt income, reported *for visibility* but excluded from the total — the form wants the IRS to see the claim, not tax it. Line 15 — taxable income $1,680: $1,800 minus her $120 of itemized state tax (no standard deduction — the line for it simply isn't offered to her). Line 16 — tax $168: the same 10% bracket a resident would pay on that income; graduated rates apply to effectively connected income. Line 25 — withholding $200, combining W-2 box 2 and any 1042-S withholding. Refund: $32. A two-digit refund, a one-page story, every treaty dollar visible and legal.

Then the page that exists on no resident return: Schedule OI (Other Information) — the biography page. It asks your country of citizenship and residence, your visa type and date of entry (F-1, August 20, 2025), whether you've applied for a green card, and — item H — your days present in each of the last three years (Mei: 134, 351, and the current count), which is the substantial presence test showing its work on the form itself. Item L is the treaty ledger: country (China), article (20(c)), months claimed in prior years (12), amount claimed this year ($5,000). Schedule OI is why the day log from Section 3 isn't optional homework — it's literally a schedule of the return. Every box on it is a box you now know how to fill.

Now Fatima's first fear, met head-on. An ITIN — Individual Taxpayer Identification Number — is a nine-digit number (it always starts with 9, formatted like an SSN: 9XX-XX-XXXX) that the IRS issues to people who need a US taxpayer number but aren't eligible for a Social Security number. That's its entire job: to let the tax system process your return, your withholding, your payments. The IRS's own framing is the reassurance: it's "a 9-digit number the IRS issues if you need a U.S. taxpayer identification number for federal tax purposes, but you aren't eligible for a Social Security number." Need + ineligibility = ITIN. Nothing about it is an accusation.

Because scammers sell ITINs wrapped in myths, here is the complete is/isn't card — every line verified against the IRS's current ITIN pages:

An ITIN is: your key to filing returns and being processed by the IRS; usable to open some bank accounts and (in some states) meet ID requirements for other purposes; the number under which your withholding is credited to you; eligible for an Identity Protection PIN (yes — ITIN holders can enroll in the IP PIN program, the same anti-theft lock residents use). An ITIN is not: work authorization (it does not permit employment); a Social Security benefit record (ITIN years never count toward Social Security); a path to the EITC (never); and — say it loudly for the frightened person in the back — it does not change, harm, or signal anything about your immigration status. It is a tax-processing number. The IRS issues them to tourists with US royalties, to foreign investors, to spouses abroad, and to Fatima.

Who needs one? Anyone with a federal tax purpose and no SSN eligibility: a nonresident filing a 1040-NR (no US work permission → no SSN); a resident-by-day-count like 2024-Fatima whose work authorization hasn't arrived; a spouse being added to a joint return like Deepa; a dependent for whom a real tax benefit attaches (since 2018, dependents get ITINs only when claimed for something — the $500 ODC, the AOTC while it allowed ITINs, or a head-of-household qualifying person). Who doesn't? Anyone who CAN get an SSN — SSN eligibility disqualifies you from an ITIN, full stop; and Mei, whose on-campus job made her SSN-eligible, correctly has an SSN and no ITIN. The two numbers never coexist.

Form W-7 is one page, and every box on it has a reason. Here is Fatima's, as her acceptance agent prepared it in April 2025, stapled to the front of her dual-status return:

The reason boxes (a–h) come first because they gate everything: the IRS wants to know your *federal tax purpose*. Box (a) is a nonresident claiming a treaty benefit; (b) a nonresident filing a US return; (c) — Fatima's — a US resident alien (based on days present in the United States) filing a US federal tax return: the substantial presence test put her here, the W-7 acknowledges it in its own checkbox; (d) and (e) are dependents and spouses of citizens/residents — box (e) is Deepa's when the Nairs' joint election return goes in; (f) and (g) cover nonresident students, professors, and visa holders' spouses/dependents (Mei would have used (f) had her job not made her SSN-eligible); (h) is 'other,' with a written explanation and an exception number. One box, checked correctly, tells the IRS your whole story.

Then the identity fields, each of which must match her documents exactly: name (line 1a as it appears on her passport; 1b any birth name), mailing address in Minneapolis (line 2 — where the CP565 assignment notice will go), foreign address (line 3 — her family's address in Mogadishu; the IRS uses it to corroborate foreign status), birth date and country (line 4 — Somalia; line 5 sex), line 6a citizenship country, 6c the US visa line — Fatima's arrival category doesn't use a visa, so her agent noted her status documentation instead; the line exists for those who have one — 6d, the identification documents table: document type (passport — the ONLY document that proves both identity and foreign status by itself; every other path needs two documents from the IRS's list of 13), issuing country, number, expiration, and her date of entry: 04/14/2024 — the same date her residency started, doing double duty. 6e/6f ask about prior ITINs (hers: none). Then the signature block — hers — and, beneath it, the Acceptance Agent's block, which is the reason her passport never left her hands. The form is dense but finite: fourteen numbered fields, one checkbox, one staple.

The three ways to submit it — and why the middle one exists

1. Mail it to the IRS ITIN Operation (P.O. Box 149342, Austin, TX 78714-9342) with your ORIGINAL passport or a copy certified by the issuing agency (not a notary — a notarized photocopy is the classic rejection). The catch is obvious: your actual passport rides the mail for ~7 weeks (9–11 in peak season, January 15–April 30). For a person who may need that passport for work verification or travel, this route is free but heavy.
2. A Certifying Acceptance Agent (CAA) — a person or business (many tax firms, some nonprofits and VITA-affiliated sites) under written agreement with the IRS to VERIFY your original documents and certify them, so the originals stay with you. A CAA can authenticate a passport for applicants and spouses (for dependents, CAAs may authenticate only passports and birth certificates), completes a certificate of accuracy, and submits the package. The IRS keeps a public CAA list by city. CAAs may charge a fee — commonly in the low hundreds — which is a *service* fee for the certification and preparation; the ITIN itself is free from the IRS, always. This was Fatima's route: a Lake Street tax office with a CAA on staff, her passport photographed, verified, certified, and handed back across the counter the same afternoon.
3. An IRS Taxpayer Assistance Center (TAC) — selected IRS walk-in offices review original documents in person by appointment (844-545-5640) and return them on the spot. Free, but appointment supply is the constraint, especially in filing season.

Seven weeks later (nine to eleven in peak season), the IRS answers with Notice CP565 — 'We assigned you an ITIN' — and the nine-digit number that makes Fatima a filed, findable, credited taxpayer. If something's defective, a CP566 asks for more information and a CP567 rejects (fixable: cure the document problem and reapply). Her $279 payment posted against the new number; her paper trail began. Keep the CP565 like you keep the passport itself — it's the birth certificate of your tax life.

ITINs age. The current rule (the chaotic middle-digit expiration waves of 2016–2020 are finished history): an ITIN not used on at least one federal return for three consecutive tax years expires on December 31 of that third year. Use it at least once every three filings and it lives indefinitely. If yours has lapsed and you need to file again, renewal is the same Form W-7 — mark 'Renew an existing ITIN,' same document rules, and (unlike a first application) a renewal can go in without a return attached. One quirk worth knowing: if your expired ITIN appears only on *information* returns (a 1099 a payer files about you) and you have no return to file, you don't need to renew at all. File a return with an expired ITIN, though, and the IRS will process it but suspend the exemptions and credits until you renew — so renew ahead of need, not after the notice.

Then comes the good day. June 2025: Fatima's work authorization arrives, and with it her Social Security number. The rule is absolute and immediate — the IRS's words: "If you received your SSN after previously using an ITIN, stop using your ITIN. Use your SSN instead." You cannot hold both; no new ITIN will ever be issued to an SSN-holder. But there's a step almost everyone misses, and it's the one that protects your money: write to the IRS and ask it to combine your tax records — a short letter (or a visit to a local IRS office) with your name, both numbers, and copies of the SSN card and CP565. The merge moves your filing history, your withholding credits, and your payment record under the SSN, so the $279 Fatima paid as ITIN-Fatima follows her — and so the wage history her employers report under the new SSN reconciles cleanly. One letter, ten minutes, years of clean records.

The United States has income-tax treaties with roughly five dozen countries — bilateral contracts that override the default tax rules for residents of the two countries, mostly to prevent the same income being fully taxed twice. For individuals, treaties matter in a few recurring ways: lower withholding rates on dividends, interest, and royalties; exemptions for students, trainees, teachers, and researchers (the articles this lesson cares about); pension and Social Security coordination; and tie-breaker rules for people resident in both countries at once. Each treaty is its own negotiation — the student article in one is a different deal in the next — which is why the honest first step is always the same: look YOUR country up in the IRS's Tax Treaty Tables (the successor to the retired Publication 901), and then read the actual article the table points to.

Two pieces of machinery decide whether a treaty benefit reaches your pocket smoothly. First: how you claim it. At the source, before withholding ever happens — Form 8233 given to your employer for treaty-exempt *wages* (renewed each year; the employer forwards it to the IRS), or Form W-8BEN given to a scholarship payer, bank, or broker for non-wage income. Or after the fact, on the return — 1040-NR line 1k plus Schedule OI item L, as Mei's walkthrough showed. Source claims are smoother (no waiting for a refund); return claims are the universal backstop. Second: whether you must disclose. Form 8833 (Treaty-Based Return Position Disclosure) is the formal declaration, with a $1,000 penalty for skipping it when required — but the everyday cases are *excepted*: a student, trainee, or teacher claiming a treaty exemption on personal-services income does not need Form 8833, and neither do reduced-withholding claims on dividends/interest or treaty positions on income under $10,000. Form 8833 territory is the exotic stuff — tie-breaker residency claims, re-sourcing income, positions over $100,000. Mei has never filed one and likely never will.

And the clause that confuses everyone: the saving clause. Nearly every US treaty contains a paragraph in which the United States "saves" the right to tax its own citizens and residents as if the treaty did not exist. Read literally, that would kill every benefit the moment a student becomes a resident by day-count. But each saving clause carries exceptions — a list of articles that survive even for residents — and the student/teacher articles are frequently on that list. So the sequence for any treaty question is always: *find the article → check the time and dollar limits → check whether the saving clause excepts it.* Three lookups, no folklore.

One more honest note that the fine print of the visual carries: states are not bound by federal treaties. Most states start their tax from federal AGI, so treaty-exempt income (already excluded federally) never enters the state calculation — Minnesota works this way for Mei, and her $5,000 stays exempt on her MN return without any state paperwork. But a handful of states decouple — California is the famous one — and tax treaty-exempt income anyway. When you move states, re-ask the question.

Mei's $5,000 (China, Article 20). The US–China treaty's student article exempts from US tax: (a) payments from abroad for maintenance and education, (b) grant/scholarship income, and (c) up to $5,000 per year of personal-services income — wages — for a student present for education or training. Mei gave the university payroll office a Form 8233 in January; her first $5,000 of library wages flowed to her un-withheld and landed on a Form 1042-S instead of her W-2; her 1040-NR reported it on line 1k and Schedule OI item L, as you watched in Section 14. Dollars saved at her bracket: $5,000 × 10% = $500 a year, every year she's a student. Two features make the China article famous. It has no fixed year limit — it runs as long as she's genuinely a student (contrast most treaties' hard caps). And it is excepted from the saving clause — meaning when Mei's exempt years run out in 2030 and she becomes a tax *resident*, filing a 1040 like anyone else, the $5,000 exemption survives (claimed then WITH a Form 8833, since the everyday exception no longer covers a resident's claim). A treaty benefit that outlives nonresidency — that's the saving-clause exception doing exactly what it was negotiated to do.

The India student rule (Article 21(2)). India's treaty takes a different shape: no dollar exemption, but Indian students and business apprentices may take the standard deduction on Form 1040-NR — the only nonresidents on earth who can — worth $16,100 (single, TY2026) against income that would otherwise get at most a few itemized crumbs. For a typical Indian grad student earning $18,000 on campus, that's the difference between tax on ~$17,900 and tax on ~$1,900 — roughly $1,700 a year. (Note who it does NOT cover: Arjun. He's an H-1B *worker*, not a student or apprentice — his Door A math in Section 11 correctly itemized. Treaty articles are job-description-specific; read yours, not your neighbor's.)

The teacher/researcher two-year window. Many treaties exempt a visiting teacher, professor, or researcher's university salary from US tax for up to two years — a J-1 scholar's whole paycheck, tax-free. But this article carries the treaties' sharpest edge: several versions (India's among them) include a retroactive clawback — stay one day past the window and the exemption is *revoked back to day one*, the entire two years of tax suddenly due. Others (like China's, Article 19) have no clawback. If you're a visiting scholar, the single most valuable hour of tax planning you'll ever do is reading your treaty's teacher article — with its own country's technical explanation — before you extend your stay.

Fatima's honest answer: no treaty. Somalia has no income-tax treaty with the United States — and she's in the world's majority: most of Africa, most of Latin America (Mexico and Venezuela have treaties; most of the region doesn't), and much of Asia are treaty-less. What did it cost her? In her case, nothing: by the time she had US income she was a full resident taxed like any Minneapolitan, and treaties mostly matter at the nonresident boundary. What it means prospectively: her foreign savings interest gets no treaty-reduced rate (it's just ordinary worldwide income on her 1040), and there's no student article for her nephew if he studies here. The honest generalization — check the table, accept the answer, and never pay anyone who claims they can 'file you under a treaty' your country doesn't have. That pitch appears in Section 25 for a reason.

Every exempt-individual year comes with one non-negotiable piece of paper. Form 8843 — Statement for Exempt Individuals and Individuals with a Medical Condition — is how you *claim* the day-exclusion that keeps a student or scholar a nonresident. It is not a tax return; it reports no income and computes no tax. It is a one-page affidavit: who you are, what status you held, how many days you're excluding, and (for students) where you study. Everyone in the household files their own — Mei files one, and if she had an F-2 spouse and child, each of them would file one too, income or no income.

Walking Mei's: Part I — her identifying information (the form works with an SSN, an ITIN, or *no number at all* for a no-income dependent), visa type F-1, date of entry 08/20/2025, current status, and the day arithmetic: days present in each of the last three years and days excluded — 351. Part II (Teachers and Trainees) — blank for her; a J-1 scholar would name the academic institution and answer the 2-of-6-year question here. Part III (Students) — hers: the University of Minnesota's name, address, and phone, the program director's name and contact, then the two guard questions: *were you exempt for any part of more than 5 calendar years?* (No — 2026 is year two; a Yes would require attaching the closer-connection showing from Section 7) and whether she's applied for permanent residence (No). Part IV is professional athletes at charity events; Part V is the medical-condition exclusion, with a physician's statement — the form's other job, for the visitor whose hospitalization made her overstay the day count. Empty parts stay empty; the form is genuinely fifteen minutes.

When and where. Filing a 1040-NR? The 8843 rides attached, same deadline. No return required — the scholarship-only student, the F-2 spouse, the no-income first-year? It mails alone, by the deadline that applies to a no-wage nonresident return (June 15 of the following year), to its own address: Internal Revenue Service, P.O. Box 409101, Austin, TX 73301-9101. (Notice that's a different Austin box than the W-7's ITIN Operation — the IRS gives every workflow its own P.O. box; envelopes are routing, not ceremony.) What if you skipped it — for years? Breathe. The regulation says the exclusion *can* be denied for non-filing, but in practice the IRS accepts late 8843s, and the standing advice from every university tax office is simply to file the missing years now. The form guards the exemption; filing it late still beats never — and no, a late 8843 has never been the thing that 'goes on your immigration record.' It's a day-count affidavit, not a confession.

Look at any American coworker's pay stub and you'll find two withholdings yours shouldn't have: Social Security (6.2%) and Medicare (1.45%) — FICA, 7.65% in total. Nonresident F-1 and J-1 students are exempt from FICA entirely on work their status authorizes: the campus library job, curricular practical training (CPT), and optional practical training (OPT, including the STEM extension) — all of it, for as long as they remain nonresidents (their five exempt years). The law (§3121(b)(19)) reasons simply: these are temporary visitors who may never draw a US retirement benefit, so they don't pay into the system. On Mei's $6,800, the exemption keeps $520 a year in her pocket. On a $60,000 OPT salary at a tech firm, it's $4,590 — real money, riding entirely on payroll coding.

And payroll gets it wrong constantly — especially off campus, where an HR system meets its first F-1 employee. Mei's own first January paycheck had $39 of FICA withheld before the university's foreign-payroll office caught it. The fix has a strict order. First: ask the employer to refund the erroneous withholding and correct its filings (it can, and the good ones do — that's how Mei's $39 came back in February). Only if the employer refuses or has vanished: file Form 843 (Claim for Refund) with Form 8316 (the statement that you asked the employer first), plus your W-2, visa documentation, and 8843 history, to the IRS — a paper process measured in months, which is exactly why route one is worth pushing on politely but firmly. Keep the denial email; Form 8316 asks about it.

Three boundary lines complete the picture. The year-6 flip flips this too: when Mei becomes a resident in 2030, FICA withholding starts — though a *separate* exemption (§3121(b)(10), for students of any residency working at their own school while enrolled half-time-plus) can keep her campus job FICA-free even then. J-1 non-students (scholars, researchers) get the same nonresident FICA exemption during their two exempt years. And H-1B workers get none of this: Arjun pays FICA from his first Minneapolis paycheck — $1,836 on his $24,000 of October–December wages — because H-1B is a work visa with full program participation from day one. His consolation is genuine: unlike Mei's, his 7.65% is buying quarters of Social Security coverage that count toward a future benefit — and toward totalization credit with India's system if his path leads home.

Now the mistake this population actually makes, in both directions — usually with software's enthusiastic help. Direction one: the nonresident who filed a resident return. Mei's friend Wei, an F-1 in year three, used a famous consumer tax app his first spring. It never asked about his visa. It cheerfully gave him the $14,600 standard deduction (2024), and a $1,460 refund he wasn't owed. Consumer tax software is built for Form 1040; a nonresident using it doesn't just get the wrong form — he gets the wrong *deduction*, sometimes wrong *credits*, and a refund that is, bluntly, the government's money sitting in his checking account. Direction two: the resident who filed 1040-NR. A sixth-year PhD student — resident now, flip missed — files another 1040-NR out of habit, forfeiting the standard deduction and (from 2026) overpaying by hundreds or thousands. One overpays the Treasury; the other underpays it; both returns are simply *wrong* and both have the same calm exit.

The fix is Lesson 34's form doing exactly its job: File Form 1040-X, attach the return you *should* have filed (a correct 1040-NR in Wei's case, marked as the corrected return), explain in Part II — three sentences: what was filed, why it was wrong (visa status/residency), what's right — and settle the difference. Wei repaid the $1,460 plus modest interest; the accuracy penalty had nothing to attach to because he came forward before any notice (the qualified-amended-return shield from Lesson 34). Universities see hundreds of Weis every year; the IRS processes these corrections as routine, because they are. What actually causes damage is the other path — leaving it, hoping, and letting an IRS notice arrive at the exact moment a green-card application wants three years of clean transcripts. The amendment is the protective move: it converts 'a discrepancy the government found' into 'a correction the taxpayer made,' which is precisely the story you want your record to tell.

Close Fatima's arc where she stands now, because the ending is the reassurance. Tax year 2026: full-year resident, SSN on the return, W-2 from the care facility. Wages $41,000 → standard deduction $16,100 → taxable income $24,900 → federal tax $2,740 (the 10% bracket filled, the rest at 12% — an effective rate of about 6.7% of her wages). Minnesota: $1,375 (its own $15,300 standard deduction, then the 5.35% first bracket — the same figure this curriculum computed for her in Lesson 12; the two lessons reconcile to the dollar). Withholding through the year roughly covers both. Her return is now *boring*, and boring is what safety looks like: three years from an airport arrival to a taxpayer whose file reads like anyone else's.

Two worldwide-income footnotes keep it honest. Her Mogadishu savings interest — the $90-a-year kind — belongs on her 1040 now (worldwide means worldwide; small doesn't mean exempt). And if her foreign accounts ever total over $10,000 even for a day, an FBAR filing joins her spring checklist — that's Lesson 43's territory, flagged here so it never surprises her.

And the question every remittance-sender asks: is the money I send home taxed? The income-tax answer is clean — no. Remittances are your own after-tax money moving; they are not deductible to you, not taxable to you, and US tax law doesn't tax your family for receiving them. But a new 2026 rule deserves exactness, because scammers are already misquoting it: since January 1, 2026, a 1% federal excise tax applies to remittance transfers funded with cash, money orders, or cashier's checks — collected by the transfer company at the counter, not by you, never on your 1040. Transfers funded from a US bank account or a US-issued debit/credit card are exempt. Fatima wires $200 a month from her checking account through her credit union: excise $0. Her neighbor who walks cash into a storefront transmitter pays $2 per $200 send — $24 a year that switching to a bank-funded transfer erases. That's the entire rule: 1%, cash-funded only, the provider's paperwork, everyone's rule regardless of status. Anyone who says 'the new remittance tax means the IRS is watching your transfers — pay me to protect you' has just identified themselves as Section 25's subject.

This is the fear that keeps people from filing at all, so it gets the most careful section in the lesson — current as of mid-2026, with dates, because you deserve precision rather than a pamphlet's soothing vagueness.

Start with what is settled law. The tax code requires filing based on income and residency — not immigration status. A tax resident by day-count owes a return whether her papers are perfect, pending, or absent. And on the affirmative side, tax compliance is one of the strongest documents an immigration file can hold: the naturalization form (N-400) asks directly whether you have ever failed to file required returns and whether taxes are owed; adjudicators treat filed returns and transcripts as core evidence of good moral character; applicants in cancellation-of-removal and family-petition cases are routinely asked by their own attorneys for years of returns. Immigration lawyers don't debate this: they tell clients to file. ITIN filing has existed for three decades precisely so that people outside the SSN system can build this record — and the tax paid supports the programs everyone uses.

Now the 2025–2026 development, stated exactly. Federal law (Internal Revenue Code §6103) makes tax-return information confidential, with narrow listed exceptions; for decades that wall meant tax data effectively never reached immigration enforcement, and the IRS said so publicly. In April 2025, the IRS and the Department of Homeland Security signed a memorandum of understanding under one of those exceptions — §6103(i)(2), for *non-tax criminal investigations* — allowing ICE to submit names and addresses of people with final removal orders or under criminal investigation for confirmation against tax records. Litigation followed immediately, and as of this writing (July 2026) the picture is genuinely mixed: the D.C. Circuit declined to block the agreement (Feb 24, 2026, *Centro de Trabajadores Unidos v. Bessent*, holding §6103(i)(2) can permit address disclosures for criminal immigration investigations), while two district courts have injunctions in force — one (Nov 21, 2025) requiring strict statutory compliance for any sharing, and one (Feb 5, 2026) barring DHS from *using* data already shared, after evidence the IRS had disclosed about 47,000 addresses, roughly 42,700 of them matched in ways a judge found violated the statute. Appeals are pending; the National Taxpayer Advocate and members of Congress have publicly pressed the IRS on it.

What does that honestly mean for you? Three things. First, the agreement's paper scope is narrow — people with final removal orders or in criminal investigations — not a fishing net over ITIN filers at large, and courts are actively policing even that scope. Second, nothing about it changed the *tax law*: the duty to file, the benefits of filing, and the credits your numbers entitle you to are all exactly as this lesson teaches. Third — and this is the consensus of the careful advisers, the taxpayer clinics, and the immigrant-rights litigators alike — for the overwhelming majority of people, filing remains both required and protective, while a person who actually has a final removal order or an active criminal case should make filing-logistics decisions *with their immigration attorney*, which was true before 2025 too. What you should refuse to do is let a rumor — or a profiteer amplifying one — talk you out of the single record that most reliably helps immigration cases. Fear is the scammer's product; precision is the antidote; you now have the precise version.

Every population in this curriculum gets a Scam Watch; this one is grimmer than most, because newcomers combine the three things fraud feeds on — unfamiliar rules, language distance, and a fear with immigration's name on it. The IRS's 2026 Dirty Dozen list is full of schemes that land hardest here: ghost preparers, fake credits, AI-voice impersonation. Four patterns, their tells, and the one rule that disarms each:

• The 'we'll fix your status through your taxes' fee (the notario pattern). In much of Latin America a 'notario público' is nearly a lawyer; in the US a notary is a stamp. Offices trade on that gap — and on everyone's hope — selling 'registration with the IRS,' 'tax amnesty for immigrants,' or 'filing that helps your case' for hundreds of dollars. THE TELL: any link between a fee and an immigration outcome. THE RULE: taxes and immigration status are separate systems — no tax filing, and no fee, can change your status. Filing helps your record the ordinary way, and this lesson just taught you to do it for the cost of postage.
• ITIN mills and fake acceptance agents. 'Expedited ITINs' (no such product exists at any price), 'ITIN renewal fees' payable to them for a free IRS process, passports held 'until the number comes' (Section 16's hostage tell), applications padded with invented dependents to inflate later refunds. THE TELL: fees for speed, or documents that don't come back same-day. THE RULE: the ITIN is free from the IRS; a real CAA is on the IRS's published list and returns your documents at the counter. Check the list before you hand anyone a passport.
• The wrong-status preparer. The storefront that files every immigrant as a resident — because the standard deduction and EITC make refunds (and the preparer's percentage fee) bigger — or every student through resident software. The refund arrives; eighteen months later the CP2000 or the credit-disallowance letter arrives too, addressed to you, not them; and the 'preparer' never signed the return (the ghost-preparer mark from Lesson 41). THE TELL: a refund that's suspiciously large, a fee taken as a cut of it, a signature line left blank, or your refund routed through the preparer's own account. THE RULE: you are legally responsible for your return — anyone unwilling to sign it with their PTIN has told you who eats the consequences.
• The deportation-threat impersonator. The call — increasingly an AI voice with a spoofed IRS caller ID, per the 2026 Dirty Dozen — that says you owe back taxes and 'ICE will be at your door tonight' unless you pay by gift card, wire, or crypto within the hour. THE TELL is the government's own never-list: the IRS never threatens deportation or police, never demands a specific payment method like gift cards, never takes payment by phone, and initiates contact by MAIL. THE RULE: hang up. A real balance, if you ever have one, arrives as a letter you now know how to read (Lesson 35), with rights attached.

How to report — safely, whatever your status

• Where: IRS impersonation (calls/texts/AI voices) → TIGTA at tigta.gov or 800-366-4484; phishing emails/texts → phishing@irs.gov (forward texts to 7726). A crooked preparer who filed or altered your return → Form 14157 + 14157-A. Fee-for-status ('notario') fraud → your state attorney general + the FTC at reportfraud.ftc.gov. A fake or abusive acceptance agent → the ITIN Policy Section (the W-7 instructions carry the address) — and the FTC.
• What to have ready: the phone number or copies of the ads/receipts, the preparer's name and the return copy, dates, and what you paid. Screenshots beat memory.
• Why (and why it's safe): none of these channels asks your immigration status, and reports can be made anonymously. Every report un-camouflages the scheme for the next family off the plane — the neighbor who reported the Lake Street 'expedite fee' office is why Fatima's CAA was a real one.

Maybe you didn't read this lesson three years ago. Maybe you filed resident returns your whole F-1 (the software never asked), or paid $400 to a man who promised your ITIN would 'help with immigration,' or skipped four years of Form 8843 you'd never heard of, or missed a treaty benefit that was yours all along. Set the shame down first: this corner of the tax code combines two legal systems, five forms, and a day-count formula — it is genuinely hard, it is not taught to you on arrival, and the people who got it wrong include PhDs, payroll departments, and no small number of paid preparers. A mistake here says nothing about your honesty and, handled now, very little about your future.

• Wrong form filed (either direction)? Form 1040-X with the correct return attached, a three-sentence Part II, settle the difference — Section 22's road, walked calmly by thousands of students and new arrivals every year. Coming forward before a notice shields you from the accuracy penalty.
• Missed a treaty benefit or the India standard deduction? Amend and CLAIM it — refunds run back within the refund window (generally three years from filing; Lesson 34 has the clocks). Money you were owed is not gone because you learned late.
• Skipped 8843s? File the missing years now, attached to a short statement. Late beats never; this is routine.
• FICA withheld all through your student years? Employer first, then Form 843 + 8316 — the refund path has no fixed expiration on your dignity, though the refund window does have one on the dollars: act on the most recent three years first.
• Paid a status-fix scammer or an ITIN mill? The fee is likely gone — but the report (Form 14157 for a preparer; the FTC and your state AG otherwise) is free, safe regardless of status, and turns your worst afternoon into the next person's warning. If they filed something false under your name, amending it yourself (Lesson 34's Gloria walked this exact road) is what protects YOUR record.
• Never filed at all, and the day-count says you should have? Start with the most recent year and work backward — the IRS's own practice for non-filers focuses on the last six years, and a Low Income Taxpayer Clinic (free, independent, multilingual) will help you triage. Every return you file now is a brick in the record you want; none of the bricks requires the wall to have been perfect.

One sentence to carry out of this section: in this system, the person who comes forward is in the strongest position there is — penalties shrink, records mend, and the file starts telling the story of someone who fixes things. That is also, not coincidentally, exactly the story an immigration adjudicator hopes to read.

In order — free first, escalation last, every rung usable whatever your status:

1. VITA — free preparation, including nonresident returns. IRS-certified volunteer sites prepare returns free for filers under the program income ceiling (about $69,000 for the 2026 season). Crucially for this lesson: many campus and community sites hold the Foreign Student & Scholar certification (its own IRS training track and Publication 4011/5876 toolkit) and prepare 1040-NRs and 8843s — and urban sites like Minneapolis's routinely work in Somali, Spanish, Hmong, and more. Ask two questions when booking: 'do you do nonresident returns?' and 'is there a certifying acceptance agent here?' — some VITA sites offer free CAA service, which is Fatima's entire Section 16 for zero dollars.
2. A Certifying Acceptance Agent for the ITIN itself — the passport-keeping route, from the IRS's published CAA list. A modest, disclosed service fee is legitimate; the number itself is always free.
3. A Low Income Taxpayer Clinic (LITC) when there's a *problem* — a notice, a wrong-status mess, a preparer's damage, an audit. Free or nominal-fee, independent of the IRS, staffed by attorneys/CPAs/EAs, serving taxpayers up to ~250% of the poverty line, with services for people who speak English as a second language. Publication 4134 is the directory. This is the rung the frightened skip and shouldn't: LITCs exist precisely for the person who thinks she can't afford to be helped.
4. The IRS itself, in your language. The ITIN unit (with your CP565/CP566/CP567 in hand); IRS.gov pages in seven languages plus Publication 17 translations; over-the-phone interpreter service in 350+ languages on the main lines; Schedule LEP on your return to request IRS communications in your preferred language. Phone waits are real — the service-level caveat this curriculum attaches to every IRS phone number — so call early-morning, midweek, off-season.
5. The Taxpayer Advocate Service (Form 911) when the system itself is stuck — an ITIN lost in processing past all published timelines while a refund waits, a merge that never happened, hardship the ordinary channels can't clear. Independent, free, and empowered to reach into the machine.
6. A paid professional who does this weekly — for the elections of Section 11, treaty clawbacks, or any year mixing statuses — verified in sixty seconds: PTIN in the IRS directory, will sign the return, fee quoted up front and never a percentage of the refund.

Paraphrased from the questions that fill every international-student office, VITA site, and community meeting in filing season:

• "I'm undocumented. Do I really have to file — and is it safe?" The law's answer: if the day-count makes you a resident with income above the thresholds, yes — the requirement doesn't ask about status, and you file a normal 1040 with an ITIN. The safety answer is Section 24, stated with dates: confidentiality remains the statutory rule, the 2025 data-sharing agreement is narrow on paper and contested in court, filing remains the protective move for the overwhelming majority — and someone with a final removal order should loop in their immigration attorney about logistics.
• "My spouse is abroad and has no number. How do we file?" Your choice of two doors: married filing separately (spouse unclaimed, no number needed — write 'NRA' where the SSN would go), or the §6013(g) election — treat the spouse as a resident, file jointly with a W-7 for them, and report their worldwide income. Price both; Section 11's logic applies.
• "Can I claim my kids back home as dependents?" Almost never. Dependents must be US citizens/residents or residents of Canada or Mexico — a child living in Mogadishu or Bengaluru doesn't meet the test regardless of how much support you send. (The support is love, not a deduction. The remittance rules are Section 23.)
• "I'm an F-1 with zero income. Do I file anything?" Yes, one thing: Form 8843, by June 15, to its Austin address. Fifteen minutes. Every family member on F-2 files their own.
• "My paycheck shows Social Security tax and I'm an F-1. Is that money gone?" No — Section 21: employer first (most fix it), Form 843 + 8316 if they won't.
• "Do I pay tax on money my family sends ME here?" No — gifts and family support aren't income. (Very large foreign gifts — over $100,000 in a year — trigger an information form, Form 3520, but no tax; that's Lesson 43 territory.)
• "Does my ITIN expire?" If it misses three consecutive years of returns, yes — December 31 of the third year. Renew with a W-7 (no return needed for a renewal) before you file again.
• "I just got my SSN. What happens to my ITIN years?" Stop using the ITIN immediately, and write to the IRS to merge the records — Section 17. Your history follows you.
• "Will claiming credits or getting a refund count against me as a 'public charge'?" Tax credits and refunds are not on the public-charge benefits list — they're your own money and tax-law entitlements, not public assistance. The public-charge rule looks at cash welfare and long-term institutional care, not at the Credit for Other Dependents.
• "My country has no treaty. Is filing the 1040-NR even worth doing right?" More so, if anything — no treaty means the mechanical rules are everything: correct sourcing, correct deductions, correct withholding recovered. Fatima's country has no treaty and her record is spotless; the treaty is a bonus, never the point.
• "Half my year was one status, half another — which software do I use?" A dual-status year is the one return even the IRS excuses from e-filing. Paper, both forms, 'Dual-Status Return' across the top (Section 10) — and a VITA foreign-student site or a pro who does these weekly is worth it for this one year.

Everything this lesson taught compresses into one determination, and here it is as a tool. Enter your days (passport in hand — the Section 3 day log), mark your status facts, and read your answer with the arithmetic shown: resident, nonresident, or dual-status; 1040, 1040-NR, or the stapled pair; and whether a W-7, an 8843, an 8840, or an election belongs on your checklist. It opens on Fatima's 2024 arrival-year facts — press the presets to watch Mei's exempt year and Arjun's 92-day October produce their completely different answers from the same formula.

Play with the edges — they're where the learning is. Set 122 days across three consecutive years and watch the count land exactly at 183. Give the student preset a sixth year and watch the flip. Turn Arjun's 92 days into 183 and watch dual-status appear. The formula never changes; your facts do — which is the entire, liberating point of this corner of the tax law.

• Resident alien / nonresident alien — the tax law's two categories for non-citizens: taxed like a citizen on worldwide income (Form 1040) vs. taxed on US-source income only (Form 1040-NR). Decided by the two tests, not by visa.
• Green-card test — lawful permanent resident at any time in the year → tax resident, no day counting; ends only when the card is formally surrendered or revoked.
• Substantial presence test (SPT) — the day-count test: ≥31 days this year AND (this year + ⅓ last year + ⅙ the year before) ≥ 183.
• Exempt individual — someone whose US days COUNT AS ZERO for the SPT: F/J/M/Q students (5 calendar years, any part of a year counts) and J/Q teachers-researchers (roughly the first 2 of 6 years). Exempt from counting, not from tax.
• Form 8843 — the one-page statement every exempt individual (and each family member) files yearly to claim excluded days — even with zero income; standalone deadline June 15, to its own Austin address.
• Closer-connection exception (Form 8840) — stays a nonresident despite meeting the SPT: under 183 actual days this year + foreign tax home + demonstrably closer foreign ties, claimed by the deadline.
• Residency starting date — the first day present in the year the SPT is met (up to 10 days of earlier 'nominal presence' can be disregarded with a closer foreign connection); green-card start is the first day present as an LPR.
• Dual-status year / dual-status return — a split year (usually arrival): US-source-only taxation before the starting date, worldwide after; no standard deduction, no joint filing (absent an election); filed as Form 1040 with a 1040-NR statement (arrival year), on paper, marked 'Dual-Status Return.'
• First-year choice (§7701(b)(4)) — the arrival-year election to start residency from your first day of a 31-consecutive-day presence (75% presence after it; must meet the SPT the next year — so extend and file after it's met).
• §6013(g) / §6013(h) elections — file jointly as full-year residents with a nonresident or dual-status spouse: worldwide income for both, in exchange for the MFJ standard deduction, joint brackets, and the resident credit menu; 6013(g) persists until ended and can never be re-elected by the same couple.
• Effectively connected income (ECI) — a nonresident's income from US work or business, taxed at the same graduated brackets as residents, with deductions.
• FDAP income — US-source passive-type income (dividends, royalties, certain rents) of a nonresident: flat 30% (or treaty rate), no deductions, usually withheld at the source; reconciled on Schedule NEC.
• The 183-day capital-gains rule — a nonresident's US capital gains are untaxed unless actually present 183+ days that year (then flat 30%); counts real days even for exempt individuals. US bank-deposit interest to a nonresident: exempt by statute.
• Form 1040-NR / Schedule OI / Schedule A (1040-NR) — the nonresident return; its biography schedule (visa, entry date, day counts, treaty claims — item L); and its short itemized-deduction schedule (state taxes, US charities, disaster casualty).
• ITIN (Individual Taxpayer Identification Number) — the 9XX-XX-XXXX number for people with a federal tax purpose who can't get an SSN. Free from the IRS. Not work authorization, not Social Security credit, never EITC, and no effect on immigration status; IP-PIN eligible.
• Form W-7 — the one-page ITIN application: reason boxes (a)–(h), identity fields, the 13-document list (passport = the only standalone), stapled to the front of the return that supplies the tax purpose (five narrow exceptions).
• Certifying Acceptance Agent (CAA) — an IRS-agreement holder who verifies and certifies your original documents so they never leave you; on the IRS's public list; for dependents may certify only passports and birth certificates.
• CP565 — the ITIN assignment notice; keep it like the passport. (CP566: more info needed; CP567: rejected — curable.)
• ITIN expiration — unused on a return for 3 consecutive tax years → expires Dec 31 of the third; renew via W-7, no return required for renewal.
• Tax treaty / saving clause / Form 8833 — the bilateral overrides; the clause letting the US tax its own residents as if no treaty existed EXCEPT the articles listed as surviving (China's student article among them); and the disclosure form ($1,000 penalty) that everyday student/teacher wage claims are excepted from.
• Form 8233 / Form W-8BEN — the claim-at-source forms: treaty-exempt personal-services wages (annual, via the employer) / non-wage income and bank interest status.
• Form 1042-S — the information slip for treaty-exempt and scholarship payments to foreign persons (the 'foreign W-2 sibling'); expect one whenever a treaty or taxable scholarship is in play.
• Student FICA exemption (§3121(b)(19)) — no Social Security/Medicare tax on a nonresident F/J student's authorized work (campus, CPT, OPT) through the exempt years; refund path if wrongly withheld: employer first, then Form 843 + Form 8316. (§3121(b)(10) separately exempts enrolled students working at their own school, any residency.)
• Remittance-transfer excise (2026) — the 1% federal excise on remittances funded with cash/money orders/cashier's checks, collected by the provider; bank-account and US-card-funded transfers exempt; never on your 1040.
• §6103 confidentiality — the statute making return information confidential, with listed exceptions; the frame for Section 24's precise 2025–26 story.