State income taxes and the municipal bond advantage

Everything you've learned about taxes in this phase has been the federal picture — what the IRS does to a capital gain, a dividend, a freelancer's profit. But there's a second tax authority most Americans answer to — forty-one states and D.C. levy an income tax — and a smaller number answer to a third, the local one, and for the people who live where those layers stack up the highest, the extra bite can feel like a mystery they never agreed to. This lesson is about that second and third layer: your state income tax, and the one legitimate, legal tool the tax code offers for shielding investment income from it — the municipal bond. Phase 6 opened by asking what the federal government does to your gains. It closes by asking what your state does, because whatever rate you computed in the earlier lessons was only ever the federal piece, and where you live can add a lot to it — or nothing at all.

Asel Nurlanovna will lead this one, and she's the right person for it, for two reasons. The first is geography: she's a 36-year-old accountant in Queens, New York, which means every dollar she earns is taxed three times over — by the federal government, by New York State, and by New York City — making her the most heavily-taxed resident in this whole course's cast. If a tool exists to shelter investment income from state and city tax, it matters more to her than to almost anyone. The second reason is her job: she's an accountant, so the central calculation in this lesson — the one that tells you exactly when a lower-yielding tax-free bond beats a higher-yielding taxable one — is the kind of arithmetic she does for a living. We'll watch her run it on her own money.

Three fears sit underneath this topic, and we'll name each one now and disarm it as we go, never saving the reassurance for the end. The first: "my state and my city take a huge extra bite out of everything, and I barely understand it." The cure is simply seeing it clearly — the layers, the rates, and the fact that for a New Yorker the state-and-city slice really is large, while for a Texan or a Floridian it's literally zero. The second: "is there any legal way to shield investment income from state tax, or am I just stuck paying it?" There is one, and it's not a loophole or a gray area — it's written into federal law and has existed for over a century: the municipal bond. The third, and the one that stops people from ever looking: "municipal bonds sound like a rich-person trick I'd probably get wrong." They're not a trick, and the test for whether they're right for you is a single line of arithmetic that we'll make completely concrete. The honest answer for many people is that they don't need munis at all — and knowing that for sure is its own kind of relief.

Here's the shape of what's coming. We start with the bite itself — the layers of state and local tax, seen on Asel's paycheck, against the stark contrast of the no-tax states where the cast's Texans and Washingtonians live (§1). Then how that state tax actually hits your investment income, which is harsher than the federal rules you just learned (§2). Then the municipal bond — what it is, and the difference between its always-on federal exemption and its conditional in-state exemption (§3). Then the decision tool that ties it all together, the tax-equivalent yield, worked on Asel against a no-tax-state resident so you can see exactly when a muni wins and when it loses (§4). And we close with a map of which version of this is yours, including the case that proves the whole thing depends on two numbers at once — your federal bracket and your state (§5). Every figure here is for tax year 2026 and verified against primary sources this June; state rules and rates shift, so we label them and you re-check your own state the year you act.

Before any bond or formula, the thing the fear is really about: the money your state and city quietly remove before you ever see it, and how wildly that amount depends on a single fact — your address. We'll sit with Asel's three-layer tax in Queens, set it against the cast members who pay no state tax at all, and lay out the national landscape that explains why "how are my investments taxed?" has no single answer in America.

§1.1 — Asel's three layers

Start with what Asel actually keeps. She earns $72,000 a year as an accountant, and her take-home pay lands at roughly $3,900 a month — about $46,800 a year. The gap between the $72,000 she earns and the ~$46,800 she keeps is taxes and withholdings, and for her that gap has three distinct tax authorities pulling from it, not one. There's federal income tax and FICA (the Social Security and Medicare payroll tax), the part everyone pays. But stacked on top, because she lives in Queens, are two more: New York State income tax, and New York City income tax — a local income tax charged by the city itself, on top of the state's. Most Americans pay one income tax; Asel pays three.

Put real rates on those layers, because the size is the whole point. We need one term first: your marginal rate is the rate on your next dollar of income — the slice the tax takes if you earn one more dollar (you met this in Lesson 38). On her last dollar of ordinary income in 2026, Asel's federal marginal rate is 22%. Her New York State marginal rate is 5.4% — New York taxes income in graduated brackets, the way the federal system does, meaning the rate climbs in steps as income rises, and her income lands in the bracket (taxable income from $13,900 to $80,650 for a single filer) that New York taxes at 5.4% in 2026. And her New York City resident rate, on top of that, is 3.876% — the city's top bracket, which applies to all city taxable income over $50,000. Add the two local layers and Asel's combined state-and-city marginal rate is about 9.3% — roughly 5.4% to Albany and 3.9% to City Hall — exactly the figure we used back in Lesson 32.

Here is why that 9.3% deserves your attention rather than a shrug. It means that on top of the 22% the federal government takes from her next dollar, New York State and New York City together take another 9.3% — so her all-in marginal rate on ordinary income is about 31.3%. Nearly a third of her next dollar is gone before she keeps a cent, and a third of that loss — the 9.3% — exists purely because of where she lives. A person with Asel's exact income and exact federal bracket living in Texas would face a marginal rate of 22%, full stop. Same job, same salary, same federal tax; about $5,650 a year different in total tax — her entire New York State plus New York City bill — purely on geography. That difference is not a rounding error, and it's the entire reason the rest of this lesson matters more to Asel than to most of the cast. (One more layer exists in New York and we'll set it aside: a resident of Yonkers pays an extra surcharge equal to 16.75% of their state tax — a tax on a tax — but Asel lives in Queens, inside New York City, so the city tax is her local layer, not the Yonkers one.)

Notice what this does to everything you learned earlier in Phase 6. Lesson 38 taught that a long-term capital gain can be taxed by the federal government at 0%, 15%, or 20%; Lesson 40 taught that a qualified dividend gets those same gentle rates. Those are real, and they're federal. But for Asel, "0% federal" is not "0% all-in," because New York will still tax that gain and that dividend — and as the next section shows, it taxes them with none of the federal kindness. The federal rate you computed was the floor of her tax on investment income, not the whole of it. For her Texan and Washingtonian counterparts, by contrast, the federal rate really is the whole story. That split — between residents for whom state tax is a large second bill and residents for whom it doesn't exist — is the landscape we map next.

§1.2 — The landscape: no tax, flat tax, graduated tax

America has fifty different answers to "how does my state tax my income," and they fall into three buckets worth knowing by name, because which bucket your state is in changes the entire calculus of this lesson. The first bucket is the states with no income tax at all. Nine of them, in 2026: Alaska, Florida, Nevada, South Dakota, Tennessee, Texas, Washington, Wyoming, and New Hampshire. A resident of these states pays the federal government and stops — no state income tax on wages, and (with one wrinkle for Washington we'll note in a moment) none on investment income either. Two of these are recent: Tennessee fully repealed its old tax on interest and dividends back in 2021, and New Hampshire repealed its own interest-and-dividends tax effective 2025, so for tax year 2026 both are genuinely no-income-tax states.

The second bucket is the flat-tax states — fifteen of them in 2026 — which tax all income at a single rate regardless of how much you make. Arizona is one, at a flat 2.5%, which is where Kevin and Lisa Park live in Scottsdale; Georgia is another, at a flat 4.99% in 2026 (cut from 5.19% by a law signed this past May), where DeShawn Carter freelances in Atlanta. A flat tax is simple — every dollar of income, the first and the millionth, is taxed at the same rate — and the rates are generally modest, from Arizona's 2.5% up to the low 5s. The third bucket is the graduated (or progressive) states, like New York, where the rate climbs in brackets as income rises, exactly the way the federal system works. New York runs from 3.9% at the bottom to 10.9% at the very top; California reaches 13.3%. These are the high-tax states, and a high earner in one of them can lose more than a tenth of every additional dollar to the state alone.

Before the map, the one wrinkle worth flagging so it doesn't trip you later: Washington, where Maya lives, is a no-income-tax state for wages and for the interest and dividends in this lesson — but Lesson 38 noted it levies a separate 7% excise tax specifically on very large long-term capital gains, above a threshold of roughly $280,000 in a single year (with a higher tier above $1 million). That's far above anything Maya will realize, so for her and for the ordinary investor it doesn't bite; it's a reminder that the state layer is genuinely idiosyncratic and worth checking for your own state rather than assuming. Now here is the landscape, with each member of our cast placed on it by where they actually live.

Read the map as three temperatures. The cool zone — no state income tax — is home to Angela in San Antonio, Maya in Seattle, and the Okonkwos in Houston: three very different households (a $58,000 teacher, a $145,000 software engineer, and a $575,000 physician-and-lawyer couple) who share one thing — their state takes nothing from their investment income, so the federal rate they computed in the earlier lessons is their whole rate. The warm zone — a modest flat tax — is Kevin and Lisa in Arizona (2.5%) and DeShawn in Georgia (4.99%): a real but small state bite. And the hot zone is Asel, alone among the cast in a high-tax state and the only one who also pays a city income tax on top — about 9.3% combined, the highest in the course. The map is the whole reason this lesson can't give one answer: the value of everything that follows depends entirely on which zone you're standing in.

And it makes the central thesis of the lesson concrete before we've even reached the bond: the legal shield this lesson is about — the municipal bond — is worth the most to the people in the hot zone and worth the least, often nothing, to the people in the cool one. Asel has the most to gain from it; Angela and Maya have almost nothing to gain from its state-tax feature, because they have no state tax to shield. Keep the map in mind as a kind of answer key. Before we can use it, though, we need to see exactly how the state tax in the warm and hot zones treats investment income — because it is harsher than the federal rules you just spent a phase learning.

The federal tax code is, for an investor, surprisingly gentle: long-term gains and qualified dividends get those preferential 0/15/20% rates, deliberately set below the rates on wages. The thing almost no one is told is that this gentleness is a federal-only kindness. Most states that tax income don't copy it — they tax your investment income at full freight. This short section makes that precise, because it's the reason a state-tax shield is worth wanting in the first place, and it sets up the bond by way of its mirror image, the Treasury you already met.

§2.1 — Most states tax investment income as ordinary income

Here is the rule, and it's the most important fact in this half of the lesson: the large majority of states that have an income tax give investment income no preferential treatment at all. Interest, dividends, and capital gains are taxed as ordinary income — at the same bracket rate as your wages. The federal 0/15/20% structure for long-term gains and qualified dividends simply does not exist at the state level in most places. Lesson 38 planted this seed for capital gains and Lesson 40 for dividends; here is where it lands. When Asel earns a long-term gain, the federal government might tax it at 15% — but New York taxes it at her ordinary 5.4% state rate plus 3.876% city rate, the same 9.3% it charges on her salary, with no gentler investment rate to fall back on. "Long-term" and "qualified" are words New York's tax form doesn't care about.

Work it through on a single concrete dollar so the harshness is unmistakable. Suppose Asel has a $1,000 long-term capital gain. Federally, in her bracket, it's taxed at 15% — $150. Then New York State and New York City tax that same $1,000 at her combined ordinary rate of about 9.3% — another $93 — because to New York a capital gain is just income. Her all-in tax on the gain is about $243, or 24.3%, not the 15% the federal rate alone suggested. The state layer added more than half again on top of the federal tax. For her Houston counterparts, the Okonkwos, that same gain is taxed only federally, because Texas takes nothing — so "15% federal" really is their whole rate on it. Same gain, same federal treatment, a 9.3-point difference in the all-in rate, entirely because of the state line on the map.

There are a few exceptions, named so the rule is honest rather than overstated: a handful of states give capital gains a partial break — Arkansas excludes half of long-term gains, South Carolina excludes 44%, and a few others (North Dakota, New Mexico, Wisconsin) allow partial exclusions; Washington, as noted, taxes only very large gains and nothing else. But these are the minority. For most investors in most income-tax states — and certainly for Asel in New York — the working assumption is correct and unkind: your state taxes your interest, your dividends, and your gains exactly like a paycheck. That is the bite a municipal bond is built to dodge. But to see how the dodge works, it helps to look first at a shield you already own, pointed the opposite way.

§2.2 — The mirror you already met: the Treasury

Back in Lesson 32 you learned something that's about to become the key to this entire lesson: the interest on US Treasuries — bills, notes, bonds, TIPS, I-Bonds — is exempt from state and local income tax. You still owe federal tax on it, but your state and your city cannot touch it. For Asel in Queens, that was a real edge: every dollar of Treasury interest escapes the 9.3% that New York and New York City would take from a CD or a savings account. We even ran the comparison there with a tool called the taxable-equivalent yield — grossing up the Treasury's yield to ask what a taxable product would have to pay to leave her with the same amount after the state and city take their cut. Hold onto that tool; we'll reuse it in a moment, pointed the other way.

Now see the Treasury for what it really is in tax terms: a bond that escapes the state layer but not the federal one. It's federally taxable, state-exempt. And that should immediately raise a question for anyone in a high-tax state: if a Treasury can dodge the state tax, is there a bond that dodges the federal tax — the bigger of the two for most people? And could a single bond somehow dodge both? The answer to the first is yes, and to the second is also yes, for the right person — and that bond is the municipal bond. It is the Treasury's mirror image. Where a Treasury is federally taxable but state-exempt, a municipal bond is federally exempt and — for the right holder — state-exempt too. The two together are the tax code's matched pair: one shields you from your state, the other from Washington, and the right one for you depends on which tax is taking the bigger bite. That mirror is the spine of everything in the second half of this lesson.

Now the instrument itself. A municipal bond carries two separate tax exemptions, and the single most common mistake people make is blurring them together. One is always on, for everyone, everywhere. The other is conditional — it depends on a match between where the bond is from and where you live. Getting the two straight is what separates someone who uses munis correctly from someone who pays state tax they didn't have to, or buys a muni that does them no good at all. We'll build the bond up, then take each exemption in turn, then walk the list of catches that keep the picture honest.

§3.1 — What a muni is, and the federal exemption that's always on

A municipal bond — a "muni" — is a loan to a state or local government. When New York State builds a bridge, when a school district renovates a building, when a water authority lays new pipe, it often raises the money by issuing bonds: it borrows from investors and pays them interest, exactly the way a corporation does when it issues a corporate bond (the bond mechanics — the loan, the coupon, the maturity, the price that moves with rates, the credit rating — are all from Lesson 31, and they apply to munis unchanged). The borrower is just a government instead of a company. "Municipal" is a slightly misleading name: it covers bonds from states, cities, counties, school districts, water and transit authorities — any state or local government body — not only cities.

Here is the feature that makes munis special, and it's written directly into federal law (Section 103 of the tax code, dating in spirit to the income tax's origins): the interest a municipal bond pays you is exempt from federal income tax. Always. For everyone. It does not matter what bracket you're in, what state you live in, or which state issued the bond — if it's a tax-exempt municipal bond, the interest it pays you is not subject to federal income tax. This is the bond's headline feature and the reason the whole category exists: the federal government chose, as a matter of policy, not to tax the interest on state and local government debt, which lets those governments borrow more cheaply to build public things. The investor's share of that deal is interest the IRS can't touch.

Two honest footnotes keep this from being oversold. First, "federally tax-exempt" describes the interest, not the bond's price: if you sell a muni for more than you paid, that capital gain is taxable like any other (only the interest is exempt). Second, the word "municipal" doesn't guarantee tax-exemption — a small category of taxable municipal bonds exists (Build America Bonds were the famous example), where the government deliberately issued federally-taxable debt in exchange for a federal subsidy. The overwhelming majority of munis a normal investor meets are the tax-exempt kind, but the label to look for is "tax-exempt," not merely "municipal." And one piece of paperwork that surprises people: even though the interest isn't taxed, you still have to report it. It shows up on your Form 1099 and goes on a specific line of your Form 1040 (line 2a, "tax-exempt interest") — an informational line that doesn't add to your taxable income but does get used in a few other calculations we'll reach in §3.3. Tax-exempt does not mean invisible.

§3.2 — The conditional exemption: in-state, out-of-state, and triple tax-free

The federal exemption is the easy half. The second exemption is the one that depends on geography, and it's where Asel's New York address finally pays her back. The rule: most states that tax income exempt the interest on municipal bonds issued within that state — by that state or its own local governments — but tax the interest on out-of-state municipal bonds. So which muni you buy, relative to where you live, decides whether you also escape your state tax.

This produces the phrases you may have heard. A bond from your own state is double tax-free: exempt from federal tax (because it's a muni) and from your state tax (because it's in-state). And in a place like New York City, where there's a local income tax on top of the state one, a bond issued in your own state can be triple tax-free — escaping federal, state, AND city tax. For Asel, an in-state New York municipal bond is the cleanest tax shelter available to her: its interest dodges the 22% federal, the 5.4% state, and the 3.876% city — every layer of her roughly 31.3% combined rate, all at once. There is no other ordinary investment that escapes all three. An out-of-state muni — say a California bond bought by Asel — would still be federally exempt, but New York would tax its interest as ordinary income, costing her that 9.3% state-and-city bite. Same kind of bond; one is triple-tax-free for her and the other is only federally free, purely because of the state stamped on it.

The flip side matters just as much, and it's the reason this section's exemption is the conditional one. For Angela in Texas, Maya in Washington, and the Okonkwos in Houston, the in-state-versus-out-of-state distinction is meaningless — there is no state income tax for any muni to dodge, so a Texan can buy a California muni or a New York muni with no state-tax penalty at all. The conditional exemption only does work in a state that has an income tax. Here is the three-way comparison made concrete, on a New York resident like Asel, so you can see how an in-state muni, an out-of-state muni, and an ordinary taxable bond each fare against her three layers of tax.

Read the three columns as what Asel actually keeps. The in-state New York muni pays its interest entirely free of federal, state, and city tax — she keeps every cent of its yield. The out-of-state muni keeps the federal exemption but loses about 9.3% of its interest to New York and the city, because to New York an out-of-state muni is just taxable income. And the ordinary taxable bond — a corporate bond, a CD, a Treasury (which at least dodges the state layer) — is taxed at her full combined rate. The lesson of the three columns is that for a high-tax-state resident, the in-state muni isn't just a little better than the out-of-state one; it's better by exactly her state-and-city rate, which for Asel is a meaningful 9.3% of the bond's yield, every year. That advantage is real — but, crucially, it is not free, because munis pay lower interest rates than taxable bonds to begin with. Whether the exemption is worth the lower yield is the question §4 finally answers. First, the catches.

§3.3 — The catches: AMT, the hidden add-backs, and where munis must never go

A responsible treatment of munis names the fine print, because each item here is a place a real investor can get tripped. None of them changes the core picture, but knowing them is the difference between using munis well and being surprised. There are four worth carrying.

First, the Alternative Minimum Tax and "private-activity" bonds. The Alternative Minimum Tax, or AMT, is a parallel federal tax system with its own rules, designed to make sure high-income people who pile up deductions still pay a floor of tax; you compute your tax both ways and pay the higher. Most people never touch it. The muni connection is this: a sub-category of munis called private-activity bonds — bonds whose proceeds substantially benefit a private business, like an airport, a stadium, or certain housing projects — have interest that is exempt from the regular federal tax but is added back when you compute the AMT. So for the small number of taxpayers who land in AMT, the interest on those specific munis can be taxed after all. The practical defense is simple and built into the market: most broad municipal bond funds advertise themselves as "AMT-free," meaning they hold no private-activity bonds, and a fund discloses any AMT-subject portion on your tax statement. If you might be subject to AMT, buy an AMT-free muni fund and the issue disappears. (One note for high earners specifically: a 2025 law tightened the AMT starting in 2026 — pulling its exemption back faster for incomes above $500,000 single or $1 million married — so more high earners may brush against it than in recent years, which makes the AMT-free label worth checking.)

Second, the genuinely good news for high earners, and the hidden add-backs that balance it. The good news: tax-exempt muni interest is also excluded from the 3.8% Net Investment Income Tax — the surtax from Lesson 38 that high earners pay on investment income above $200,000 single or $250,000 married. A taxable bond's interest gets hit by that 3.8%; a muni's interest does not. That's a real, stacking advantage for someone like the Okonkwos, and we'll use it in §5. But the balancing catch — the reason "tax-exempt" doesn't mean "free of all consequences" — is that muni interest is added back in two places that can matter, especially for retirees. It counts toward the formula that decides how much of your Social Security benefit gets taxed (Lesson 56's subject), and toward the income figure that sets your Medicare premiums, the IRMAA surcharge (Lesson 60's). A retiree with large muni holdings can find that their "tax-free" income quietly pushed more of their Social Security into being taxed, or bumped their Medicare premium up a tier. It's not a reason to avoid munis; it's a reason to know that the income still shows up where it counts.

Third, a quieter trap for anyone buying individual munis on the secondary market rather than through a fund: the de minimis rule. If you buy a muni at a discount to its face value (common when interest rates have risen since it was issued), and the discount is large enough — more than a quarter-point per year remaining to maturity — then the gain you collect as it climbs back toward face value is taxed as ordinary income, not as a gentler capital gain, eroding the tax-free appeal. It's a real consideration for individual-bond buyers and one more reason most ordinary investors are better served by a low-cost muni fund, where this is handled inside the fund, than by picking individual bonds themselves.

Fourth, and most important to get right because it's the most common expensive mistake: never hold municipal bonds in a tax-advantaged account — an IRA, a 401(k), a Roth. This follows straight from Lesson 41's asset-location logic, and it's worth stating as a hard rule. A muni's entire advantage is that its interest escapes tax in a regular taxable account. Inside an IRA or 401(k), nothing is taxed as it grows anyway, so the muni's exemption is wasted — you've used a tax shelter on income that was already shielded. Worse, in a traditional IRA or 401(k), every dollar eventually comes out taxed as ordinary income, so you'd actually convert permanently tax-free muni interest into eventually-taxable money, and you'd accept the muni's lower yield for the privilege. The correct placement, which Lesson 41 mapped in full, is the reverse: taxable bonds go in the shelter where their interest can hide, and munis go in the taxable account where their built-in exemption does its work. Munis are a tool for taxable accounts, full stop. With the catches named, we can finally answer the question the whole lesson turns on: given that munis pay less, when are they actually worth it?

Everything so far has been setup for one calculation. Municipal bonds pay lower interest rates than comparable taxable bonds — that's the price of the tax break, and the market sets it that way precisely because the interest is tax-free. So the real question is never "is the interest tax-free?" (it is) but "is the tax break big enough to make up for the lower yield?" The answer is a single line of arithmetic — the tax-equivalent yield — and it depends entirely on your tax rate, which is to say, on your bracket and your state. This is the section that turns the whole topic into a decision you can make on your own numbers.

§4.1 — The formula, and the rate that goes in it

You already met the tool in Lesson 32: the tax-equivalent yield is the yield a taxable bond would have to pay to leave you with the same after-tax money as a given tax-free bond. The formula is the muni's yield divided by one minus your tax rate: TEY = muni yield ÷ (1 − your marginal rate). If a real taxable bond pays more than that number, the taxable bond wins after tax; if it pays less, the muni wins. The whole decision reduces to computing one gross-up and comparing it to what a taxable bond actually yields. The only subtlety — and it's the one that separates a correct answer from a common error — is which rate goes into the formula, because the rate must equal exactly the taxes the muni escapes that the alternative does not.

There are three versions, and getting them straight is the heart of doing this right. Version one, comparing an in-state muni to a fully taxable bond — a corporate bond, a CD, a savings account — uses your full combined marginal rate: federal plus state plus local (plus the 3.8% surtax if you're subject to it). That's because an in-state muni escapes all of those, while the corporate bond or CD escapes none. For Asel, that combined rate is the full ~31.3%. Version two, comparing a muni to a US Treasury, uses your federal rate only — because a Treasury, as Lesson 32 taught, is already exempt from state and local tax, so the muni gets no state-tax edge over it. Crediting the muni with a state advantage it doesn't have over a Treasury is the single most common mistake people make, and it overstates the muni. Version three: an out-of-state muni compared to a taxable bond uses your federal rate only, because an out-of-state muni escapes only the federal layer. Same formula every time; the rate changes with what's escaping what.

That second version carries a subtle and important consequence worth pausing on: because the muni-versus-Treasury comparison uses the federal rate only, a no-income-tax-state resident and a high-tax-state resident face the exact same break-even on that comparison. Whether you live in Texas or New York, a muni only beats a Treasury if your federal bracket is high enough — your state is irrelevant to that particular contest, because the Treasury already dodged it. The state only enters when the muni's competitor is a fully-taxable bond. That single insight resolves a lot of confusion, and it's the reason the lesson keeps insisting munis depend on two numbers at once: your federal bracket decides the muni-versus-Treasury question, and your state decides the muni-versus-taxable-bond question. Let's watch both play out on real numbers.

§4.2 — Asel runs the math against a no-tax-state resident

Here is the calculation Asel — an accountant — would do in about a minute, and it's the cleanest demonstration in the lesson of why geography is the whole game. Take a representative in-state New York municipal bond fund yielding about 3.30%, and set it against a fully-taxable alternative of similar safety — a CD or a high-grade corporate bond yielding about 4.40%. On their face, the taxable bond wins: 4.40% is more than 3.30%. The muni pays you 1.1 percentage points less in headline yield. The question is whether her tax rate makes up the gap.

Watch the gross-up. For Asel, comparing an in-state NY muni to a fully taxable CD, the rate is her full combined ~31.3%. Her muni's tax-equivalent yield is 3.30% ÷ (1 − 0.313) = 4.80%. That's the number to compare: a taxable bond would have to pay 4.80% to leave Asel with as much after tax as the tax-free 3.30% muni does. The real taxable bond pays only 4.40%. So for Asel, the 3.30% muni beats the 4.40% taxable bond — it's the after-tax equivalent of 4.80%, and 4.80% is more than 4.40%. In plain dollars on a $10,000 position: the muni pays her $330 and she keeps all of it; the taxable bond pays $440, but New York, the city, and the IRS take about $138 of it, leaving her $302. The lower-yielding muni puts about $28 more a year in her pocket per $10,000 — and on her actual $15,000 of savings, about $41 a year — purely because her tax rate is high enough to flip the comparison.

Now move that exact same muni and that exact same taxable bond to a no-income-tax state, and watch the verdict reverse. Take a resident with Asel's identical 22% federal bracket but living in Texas, where there's no state tax. For them, the muni only escapes the federal 22% — there's no state or city layer to add — so the gross-up rate is just 22%. Their muni's tax-equivalent yield is 3.30% ÷ (1 − 0.22) = 4.23%. That's less than the 4.40% the taxable bond pays. So for the Texan, the very same 3.30% muni loses to the very same 4.40% taxable bond. The taxable bond keeps them about $343 per $10,000 after federal tax, versus the muni's $330 — the taxable bond wins by about $13. Same two bonds, same federal bracket, opposite answers — and the only thing that changed was the state. That is the lesson in one comparison: where you live can be the entire difference between a muni being the smart buy and the wrong one.

The break-even is worth naming because it's the cleanest summary of the whole decision. The tax rate at which a muni exactly ties a taxable bond is one minus the ratio of their yields: for a 3.30% muni against a 4.40% taxable bond, that's 1 − (3.30 ÷ 4.40) = 25%. Above a 25% total tax rate, this muni wins; below it, the taxable bond wins. Asel's combined rate (~31.3%) is comfortably above 25%, so the muni wins for her. The Texan's federal-only 22% is below it, so it loses for them. And notice what this tells the rest of the cast at a glance: Angela in Texas, at a 12% federal rate, is far below 25% — munis do nothing for her. Maya in Washington, at 24% federal with no state tax, is just below 25% — even her respectable bracket isn't quite enough against these particular yields. The break-even rate is the single number that decides it, and most people, it turns out, don't clear it. Which raises the case that proves the rule from the other side — the household that clears it on federal bracket alone, with no state tax at all.

The arithmetic is now yours. What remains is to turn it into a personal answer, because the whole point of this lesson is that the right move genuinely differs by household. We'll lay out the decision as a short sequence of questions, work the case that proves munis depend on your federal bracket and not just your state, and then place each member of the cast so you can find the one who looks like you.

§5.1 — The decision, as three questions

Whether a municipal bond belongs in your portfolio comes down to three questions, asked in order. First: is this money in a taxable account? If it's in an IRA, a 401(k), or a Roth, stop — munis don't belong there (§3.3), and the question is moot. Munis are only ever a taxable-account decision. Second: is your federal bracket high enough? Run the tax-equivalent yield. As a rough guide, with today's muni and taxable yields the break-even lands around the mid-20s percent in total tax, so the federal 24% bracket is roughly the threshold where munis start to get interesting and the 32%, 35%, and 37% brackets are where they shine; below the 22% bracket they rarely make sense for the federal exemption alone. Third: does your state add a high tax on top? If you're in a high-tax state like New York or California, an in-state muni adds the state-and-local exemption on top of the federal one, which can tip the math toward munis even at a moderate federal bracket and makes a single-state (in-state) fund worth considering. If you're in a no-tax state, only the federal exemption is in play, so a national muni fund is fine and the in-state question doesn't arise.

That third answer points at one real product choice worth naming: the single-state muni fund versus the national one. A single-state fund — a "New York muni fund," a "California muni fund" — holds only bonds from your state, so all of its interest is exempt from your state tax; that's the maximum in-state benefit, and for a high-tax-state resident it's often the right call. The trade-off is concentration: you're now holding the bonds of one state's governments, so your credit and economic risk is tied to that single state rather than spread across the country. A national muni fund diversifies that risk across all fifty states, but only the slice issued by your own state escapes your state tax. For a high-tax-state resident, the in-state fund's bigger state-tax break usually wins; for a no-tax-state resident, there's no reason to single-state at all, so the diversified national fund is the obvious pick. It's the familiar tax-savings-versus-diversification trade, and the right side of it depends, once again, on your state.

§5.2 — The proof case: the Okonkwos, no state tax but high federal bracket

If the lesson so far suggested munis are mainly a high-tax-state story, the Okonkwos correct it — and they're the case that proves the decision takes two numbers, not one. David and Sarah Okonkwo are the Houston physician-and-lawyer couple, earning $575,000 a year, and they live in Texas, where there is no state income tax at all. By the logic of Asel's comparison, you might think munis do nothing for them — no state tax means no state-tax exemption to capture. And it's true that the in-state-versus-out-of-state distinction is meaningless for them; they'd just hold a diversified national muni fund. But munis are still a strong fit for the Okonkwos, and the reason is their federal bracket.

Run their numbers. As established back in Lesson 41, their income lands them in the 32% federal bracket, and as high earners they also owe the 3.8% Net Investment Income Tax on their investment income — so a taxable bond's interest is taxed at about 35.8% federally. A muni escapes both: the 32% income tax (because the interest is federally exempt) and the 3.8% surtax (because, as §3.3 noted, muni interest is excluded from it). So even with zero help from Texas, their gross-up rate is a hefty 35.8%. Take a national muni fund yielding about 3.50% against a comparable investment-grade corporate bond fund yielding about 5.25%. The muni's tax-equivalent yield is 3.50% ÷ (1 − 0.358) = 5.45% — more than the 5.25% the taxable corporate pays. The muni wins for the Okonkwos on the strength of the federal exemption alone, with no state tax in the picture whatsoever. (One honesty check, since this lesson respects matched comparisons: that corporate bond yields more partly because it carries more credit risk than a high-grade muni, so a careful investor matches credit quality and maturity before trusting the comparison — but the tax math is sound, and at their bracket the muni's edge is real.)

Here's why this is the proof. Put a resident of the same no-tax Texas, but in only the 24% federal bracket, against those identical yields: their muni's tax-equivalent yield is 3.50% ÷ (1 − 0.24) = 4.61%, well under the 5.25% corporate — the muni loses badly. Same state, same zero state tax, same bonds; the Okonkwos win and the 24%-bracket Texan loses, purely because of the federal bracket. So it isn't your state alone, and it isn't your federal bracket alone — it's both together. Asel's case showed a high state tax tipping a moderate federal bracket toward munis; the Okonkwos' case shows a high federal bracket carrying munis even with no state tax at all. The full rule is the union of the two: a muni is worth it when your combined federal-plus-state rate clears the break-even — and that can happen because your state is high, because your federal bracket is high, or because both are. The tax-equivalent yield is simply the tool that adds the two numbers up and tells you the answer for your exact situation.

§5.3 — Which one is you?

Find yourself among the cast, then make the move that's yours. The thread running through all of them: munis are a tool for high combined tax rates in taxable accounts, and most people, honestly, don't need them — which is information, not failure.

If you're a high-tax-state (or high-tax-city) resident — Asel in New York City, or anyone in California, New Jersey, or another high-rate state — you're the person municipal bonds were practically made for, but only for money in a taxable account and only once your combined rate clears the break-even. For the bond sleeve of a taxable account, an in-state muni fund captures all three layers of exemption (federal, state, city) and is usually worth the slightly higher concentration risk; run the tax-equivalent yield against a Treasury and a taxable bond before committing, because at a moderate federal bracket a state-tax-exempt Treasury can still compete (as it does for Asel — her 22% federal bracket means a Treasury, which also dodges her city and state tax, is a genuinely strong alternative, and the muni's clean win is mainly over fully-taxable CDs and corporates). Your job is to compare all three on an after-tax basis, which you now know how to do.

If you're a no-income-tax-state resident — Angela in Texas, Maya in Washington — the in-state question disappears, and munis come down to your federal bracket alone. For Angela, at the 12% federal bracket, munis do essentially nothing; her after-tax math never clears the break-even, and she should hold ordinary taxable bonds (or Treasuries) and not give up yield chasing a tax break she's not in a bracket to use. For Maya, at 24% federal and still climbing in her career, munis are on the edge — not compelling yet at today's yields, but worth re-running the tax-equivalent yield as her income rises into the higher brackets, at which point a national muni fund (no in-state benefit to chase in Washington) could start to make sense. And if you're a high earner in a no-tax state — the Okonkwos — munis can absolutely belong in your taxable bond sleeve on the federal exemption alone, the NIIT exemption included, even though your state contributes nothing.

If you're a modest-flat-tax resident — Kevin and Lisa in Arizona at 2.5%, DeShawn in Georgia at 4.99% — your state adds a small layer, but at the moderate federal brackets these households sit in, the combined rate usually still falls short of the break-even, so munis are typically not worth the lower yield; ordinary taxable bonds in the taxable account, and the right bonds in the shelters per Lesson 41, are the simpler and usually better call. And if you're a retiree or anyone drawing on this money — remember the §3.3 footnote that muni interest, though untaxed, still counts toward how much of your Social Security is taxed and toward your Medicare premium, so run the full-picture math, not just the headline exemption. Whatever your case, the decision now rests on a calculation you can perform yourself in a minute — and where exactly municipal bonds fit inside your overall stock-and-bond allocation, how big the bond sleeve should be in the first place, is the very next lesson, where we finally build the portfolio these last several lessons have been preparing you for.

Municipal bonds are about as boring and safe as investing gets, which is exactly why fraudsters borrow their respectable, tax-free reputation to dress up things that are neither. The danger here isn't the muni itself; it's the pitch that uses the word "municipal" or "tax-free" to lower your guard. The unifying tell is a tax-free yield that's far above the real market — when legitimate high-grade munis yield around 3%, a "tax-free municipal" offering you 8% or 9% is not a bargain you found; it's a warning.

Fake or fraudulent municipal offerings

Scammers create official-sounding "municipal" or "public authority" bonds — for projects that don't exist, or issued by entities with no authority to issue them — and sell them through cold calls, seminars, or slick websites, promising high tax-free returns. Some are outright Ponzi schemes paying early investors with later investors' money under a "municipal bond fund" label. The protection: every genuine municipal bond and its official disclosures are filed on the MSRB's free EMMA system (emma.msrb.org). If a bond a salesperson is pushing isn't on EMMA, or the salesperson discourages you from checking, that's the scam announcing itself.

Affinity and "church bond" schemes

A related con targets a community — a congregation, an ethnic or immigrant community, a professional group — with bonds for a building, a mission, or a local project, trading on shared trust to skip the usual scrutiny. The "tax-free" and "supporting our community" framing is the hook. Real community bonds exist, but the same verification applies: it must be a registered offering, the issuer must be real and authorized, and the salesperson must be licensed.

The unsuitable-but-legal sale

Not fraud, but the same financial harm: a broker selling munis to someone in a low tax bracket, or — worse — putting them inside an IRA, where the exemption is wasted (§3.3). This is the tax-equivalent-yield mistake turned into a sale. It's why a broker who recommends municipal bonds without ever asking your tax bracket and what kind of account the money's in is either careless or not acting in your interest.

How to check, and how to report — calmly, because verifying takes minutes. Look up any municipal bond and its disclosures free at the MSRB's EMMA site (emma.msrb.org); verify the salesperson's license and record on FINRA BrokerCheck (brokercheck.finra.org) and the SEC's Investor.gov. If something is being sold hard, with pressure and a too-good tax-free yield, walk away and report it: to the SEC at investor.gov / sec.gov/tcr, to FINRA, and to the FTC at ReportFraud.ftc.gov; if you've lost money, the FBI's IC3 at ic3.gov. Reporting isn't an admission you were foolish — it's how the next person in your community gets warned.

If this lesson landed with a wince — because you're holding municipal bonds in your IRA, or you bought out-of-state munis and paid state tax you didn't have to, or you own munis in a no-tax state or a low bracket where they do you no good, or a broker put you in a pricey single-state managed account you didn't need — set the self-blame down. None of these is a disaster, and none of them is a moral failing. The tax-equivalent-yield calculation that makes all of this obvious is not something anyone teaches you before you're sold the product; the most common way people learn munis have a wrong account and a wrong bracket is by accidentally being in one. This is a tune-up, not a verdict.

And it's genuinely fixable, usually without any tax cost. If your munis are in an IRA or 401(k), you can sell them and buy something more appropriate entirely inside the account — trades inside a tax-advantaged account trigger no tax at all — and move taxable bonds into that shelter instead, exactly the asset-location fix from Lesson 41. If you're holding out-of-state munis or munis in a bracket too low to benefit, the repair is gentler still: you usually don't need to sell anything in a hurry and realize a gain — just stop adding to them, redirect new money to what fits (an in-state fund if you're high-tax-state, ordinary taxable bonds or Treasuries if munis aren't earning their keep for you), and let the allocation drift right over time. If you were sold an expensive single-state separately-managed account, compare its fee and after-tax yield to a plain low-cost muni fund and switch if the fund wins, which it usually does.

The reassuring truth underneath all of it: the worst case from any of these mistakes is that you captured a bit less of a modest tax benefit, or gave up a little yield, for a while. You didn't blow anything up — municipal bonds are among the safest things you can own, and a misplaced one is still a perfectly fine bond, just not in its best tax home. Run the tax-equivalent yield once, on your real bracket and your real state, and you'll know exactly what to do — and you'll never be sold a muni you don't need again.

The move: an advisor offers to build you a personalized municipal bond portfolio — often a "separately managed account," or SMA, holding individual munis from your own state, laddered across maturities — for an annual fee (commonly 0.25% to 0.50% of the assets, sometimes more, plus markups baked into the bond prices). For a high-tax-state resident with real money in a taxable account, this can sound like exactly the bespoke tax-shelter you should be paying a professional to assemble. Sometimes it genuinely is.

The logic, decoded: the core benefit you're buying — tax-free, in-state municipal interest — is available in a one-line product. A low-cost in-state municipal bond fund (a New York muni fund for Asel, a California one for a Californian) delivers the same federal-and-state exemption, instant diversification across hundreds of issuers, and an expense ratio often under 0.10% — a fraction of an SMA's fee. For most people, that fund captures essentially the entire advantage the lesson is about. The accessible substitute for "a custom muni ladder built for my state" is, almost always, "a low-cost muni fund for my state."

The "is your advisor worth the fee?" tell: a good one earns the fee on the things a fund can't do, not on the bond-picking itself. Are they doing real tax-loss harvesting inside the account, customizing the credit quality and maturity to your specific situation, coordinating the munis with the rest of your tax picture (the AMT check, the NIIT, your Social Security and IRMAA exposure), and running the tax-equivalent yield to confirm munis even beat the alternatives for your bracket before recommending them? That can be worth real money on a large account. But an advisor who simply buys you a ladder of in-state bonds you could have gotten in a fund, charges you half a percent a year for it, and never once mentions your tax bracket or whether a Treasury would serve you better is selling you packaging. The cash question is the same as always: pay for the judgment and the coordination, not for assembling bonds a cheap fund already assembles.

If state taxes and municipal bonds have sat in your mind as a fog of complication — a sense that high earners have access to some clever tax-free machinery you're failing to operate — notice what the machinery actually turned out to be. The state tax is just a second (sometimes a third) layer of the ordinary income tax you already understand, and its size is decided by one fact you can look up in a minute: your state's rate, or its absence. And the famous tax-free shelter is just a bond whose interest the federal government chose not to tax, plus a second exemption for your own state's bonds — useful to exactly the people the arithmetic says it's useful to, and no one else. There's no secret menu here. There's a formula, and now it's yours.

The single most freeing thing in this lesson is that the honest answer for most people is "you don't need municipal bonds." If you're not in a high combined tax bracket with money in a taxable account, munis aren't a sophisticated thing you're missing — they're a tool for a problem you don't have, and skipping them is the correct, knowledgeable move, not a gap in your education. And if you are the person they're built for — a high earner, a high-tax-state resident — you now hold the one calculation that tells you exactly when they win, so you can never be sold the wrong bond, in the wrong account, for the wrong bracket again. Where you live shapes your tax bill more than almost anyone tells you. But it's knowable, it's not frightening once you've seen it, and the one legal shield that exists for it is now something you can evaluate yourself, in a minute, on your own numbers.

I live in Texas (or Florida, or another no-income-tax state). Do municipal bonds help me at all?

Only through their federal exemption, and only if your federal bracket is high enough. In a no-income-tax state, the in-state-versus-out-of-state distinction is meaningless — there's no state tax for any muni to dodge — so a muni's only benefit is that its interest escapes federal income tax. Whether that's worth the muni's lower yield comes down entirely to your federal bracket: run the tax-equivalent yield (muni yield ÷ (1 − your federal rate)) and compare it to a real taxable bond. For a high earner like the Houston physician-and-lawyer couple in this lesson — 32% bracket plus the 3.8% surtax — munis win on the federal exemption alone. For someone in the 12% or 22% bracket, they usually don't, and you're better off with ordinary taxable bonds or Treasuries. No state tax doesn't rule munis out; it just means the federal bracket is the whole decision.

What's the difference between an in-state and an out-of-state municipal bond?

Both are exempt from federal income tax — that part is the same. The difference is your state tax. A bond issued in your own state (by your state or its local governments) is also exempt from your state income tax — that's the "double tax-free" (or, in a city with its own income tax like New York City, "triple tax-free") bond. A bond from another state is federally exempt but fully taxable on your home-state return, like any other income. So for a high-tax-state resident, an in-state muni is meaningfully better than an out-of-state one — better by your exact state-and-local rate, every year. For a no-income-tax-state resident, the distinction doesn't exist, because there's no state tax either way. A handful of states (Illinois, Iowa, Oklahoma, Wisconsin) are exceptions that tax even their own munis, so check your specific state.

Should I hold municipal bonds in my IRA or 401(k)?

No — this is the single most common expensive muni mistake. A muni's entire advantage is that its interest escapes tax in a regular taxable account. Inside an IRA or 401(k), nothing is taxed as it grows anyway, so the exemption is wasted on income that was already shielded — and you've accepted the muni's lower yield for no benefit. Worse, in a traditional IRA or 401(k), every dollar eventually comes out taxed as ordinary income, so you'd convert permanently tax-free muni interest into eventually-taxable money. The correct placement (from Lesson 41's asset-location rules) is the reverse: put taxable bonds in the shelter, where their interest can hide, and keep munis in your taxable account, where their built-in exemption actually does something. Municipal bonds are a taxable-account tool, full stop.

Municipal bonds yield less than my CD or my corporate bond fund. Why would I ever buy them?

Because the headline yield isn't what you keep — the after-tax yield is, and that's what the tax-equivalent yield measures. A muni pays less precisely because its interest is tax-free; the market prices it that way. The real question is whether the tax break more than makes up for the lower yield, and the answer depends on your tax rate. Example from the lesson: a 3.30% in-state New York muni versus a 4.40% taxable CD. For the New York City accountant at a ~31.3% combined rate, the muni's tax-equivalent yield is 3.30% ÷ (1 − 0.313) = 4.80% — it beats the 4.40% CD after tax, keeping her about $28 more per $10,000 a year. For someone in a 22% bracket with no state tax, the same muni's tax-equivalent yield is only 4.23%, so the CD wins. The lower yield is the price of the tax break; whether it's worth paying is exactly what the calculation tells you.

How do I actually calculate whether a muni beats a taxable bond?

One formula: tax-equivalent yield = the muni's yield ÷ (1 − your marginal tax rate). That gives you the yield a taxable bond would have to pay to leave you with the same after-tax money. If a real taxable bond pays more than that number, buy the taxable bond; if it pays less, buy the muni. The only trick is which rate to use: comparing an in-state muni to a taxable corporate bond or CD, use your full combined rate (federal + state + local + the 3.8% surtax if you owe it); comparing a muni to a US Treasury, use your federal rate only (because a Treasury is already state-tax-exempt, so the muni gets no state edge over it). The interactive at the end of this lesson runs this for you — enter your state, your bracket, and the two yields, and it gives you the verdict.

I'm in the 22% federal bracket. Are munis worth it for me?

Probably not for the federal exemption alone, but possibly if you're also in a high-tax state. At a 22% federal bracket with no state tax, the break-even against today's yields sits a bit above your rate, so a muni usually loses to a comparable taxable bond — you'd be giving up yield for a tax break too small to matter. But add a high state-and-local tax, and the picture can flip: the New York City accountant in this lesson is also in the 22% federal bracket, yet her ~9.3% state-and-city tax pushes her combined rate to ~31.3%, which clears the break-even and makes an in-state muni win. So "22% bracket" isn't a yes-or-no by itself — it's a yes if your state piles on enough, a no if you're in a no-tax or low-tax state. Run the tax-equivalent yield with your actual combined rate. And compare against a Treasury too: at a moderate federal bracket, a state-tax-exempt Treasury is often the quiet winner.

Is municipal bond interest completely invisible to the IRS and my state? It sounds too good.

It's exempt from tax, but not invisible — and the distinction matters. You still report tax-exempt muni interest on your federal return (Form 1040, line 2a) and it appears on your 1099; it just doesn't get added to your taxable income. And it shows up in a few calculations even though it isn't taxed: it counts toward the formula that decides how much of your Social Security benefit is taxable, and toward the income figure that sets your Medicare premiums (the IRMAA surcharge). So a retiree with large muni holdings can find their "tax-free" income quietly pushed more of their Social Security into being taxed or bumped their Medicare premium up a tier. There's also one type — "private-activity" bonds — whose interest can be taxed under the Alternative Minimum Tax. None of this is a reason to avoid munis; it's a reason to know the income still counts where it counts, and to use an "AMT-free" fund if AMT could apply to you.

What is the AMT, and do I have to worry about it if I buy munis?

The Alternative Minimum Tax (AMT) is a parallel federal tax with its own rules, meant to ensure high-income people who stack up deductions still pay a floor of tax — you compute your tax both ways and pay the higher. Most people never touch it. Its muni connection: interest on "private-activity" municipal bonds (bonds that fund things like airports or stadiums) is added back when you figure the AMT, so for the small number of taxpayers in AMT, that specific interest can be taxed. The easy defense is built into the market — most broad muni funds advertise as "AMT-free," meaning they hold no private-activity bonds, and any AMT-subject portion is disclosed on your tax statement. If you're a high earner who might owe AMT (a 2025 law made it bite a bit more starting in 2026 for incomes over $500,000 single / $1 million joint), just buy an AMT-free muni fund and the issue is gone. For everyone else, it's a non-issue.

Single-state muni fund or a national one — which should I pick?

It depends on whether you have a state tax to shield. A single-state fund (a "New York muni fund," say) holds only your state's bonds, so all of its interest escapes your state tax — the maximum in-state benefit — but it concentrates your credit and economic risk in one state. A national fund spreads bonds across all fifty states, diversifying that risk, but only the slice from your own state escapes your state tax. The rule of thumb: if you're in a high-tax state, the single-state fund's bigger state-tax break usually outweighs the concentration risk, so it's often the right call; if you're in a no-income-tax state, there's no in-state benefit to chase, so the diversified national fund is the obvious pick. It's the classic tax-savings-versus-diversification trade-off, and your state decides which side wins.

Are municipal bonds actually safe? Can't a city go bankrupt and stop paying?

They're among the safer things you can own, but "safe" isn't "risk-free," and the same bond mechanics from Lesson 31 apply. Municipal defaults are historically rare — far rarer than corporate defaults — especially for general-obligation bonds backed by a government's taxing power, though they do happen (Detroit and Puerto Rico are the cautionary names). Revenue bonds, backed only by a specific project's income (a toll road, a stadium), carry more risk than general-obligation ones. And like all bonds, munis carry interest-rate risk: if rates rise, the price of an existing muni or muni fund falls. The practical protection is the same as for any bond: favor high credit quality (investment-grade), and a diversified fund over a single bond, so no one issuer's trouble can hurt you much. The tax break is the muni's special feature; its risks are the ordinary bond risks you already learned to read.

This is the lesson's one interactive piece — a municipal-bond decision modeler that runs your situation, not a character's. You enter your state (or pick "no income tax"), your federal bracket, and a muni yield and a taxable-bond yield, and it computes, live: your combined marginal tax rate (federal + state + any local, plus the 3.8% surtax if you flag it), the muni's tax-equivalent yield against a fully-taxable bond and separately against a state-exempt Treasury (the two correct gross-ups), the break-even tax rate where the two tie, and a plain "muni or taxable?" verdict with the dollar difference per $10,000. It's pre-filled with Asel's New York City situation — a ~3.30% in-state NY muni against a 4.40% taxable CD at her ~31.3% combined rate — which reproduces the lesson's numbers exactly: a 4.80% tax-equivalent yield, a 25% break-even, and the muni winning by about $28 per $10,000. Clear it and put in your own state and bracket: switch your state to "no income tax" and watch the same muni flip from winner to loser, exactly as it does between Asel and a Texan. Every figure recalculates live; the 2026 brackets and rates are labeled and shift a little each year, so re-check your own state the year you act, and nothing you type is saved. It's an educational estimate, not tax advice.