Key Takeaways
- Nine states charge no wage income tax in 2026 — AK, FL, NV, NH, SD, TN, TX, WA, WY.
- Fifteen states use a flat rate; the remaining 26 plus DC run progressive brackets.
- Top marginal rate is a cocktail-party number. Effective rate is what comes out of your paycheck.
- Residency is decided by two tests in parallel: domicile (intent) and statutory presence (typically 183 days plus a place of abode).
- Reciprocity agreements help cross-border commuters in the Midwest and Mid-Atlantic. New York refuses to sign one with anybody.
- Roughly 5,000 local jurisdictions — cities, counties and school districts — levy a local income tax. NYC, Philly, and Yonkers top the list.
Three Systems, 51 Versions
State income tax in 2026 splits cleanly into three buckets — no income tax at all, a single flat rate, or progressive brackets like the federal system. The split sounds tidy and isn't. Within each bucket, every state writes its own rules: different standard deductions, different exemptions, different rules for retirement income, different surtax cliffs, different cities layering local tax on top. The federal code is one rulebook. State code is fifty-one.
The political direction since 2021 has been toward flatter systems. Iowa collapsed nine brackets to one. Arizona, Idaho, Mississippi, Georgia, Louisiana and Ohio also traded brackets for a single rate, the last of them for 2026. Kentucky and North Carolina went flat earlier and keep cutting the rate. Whether that's good policy is a different essay; the practical effect is that any guide more than two years old has stale rates somewhere.
The 9 No-Income-Tax States
Nine states charge no tax on wage income in 2026: Alaska, Florida, Nevada, New Hampshire, South Dakota, Tennessee, Texas, Washington, and Wyoming. New Hampshire was technically the holdout — it taxed interest and dividends through 2024, at a rate stepping down from 5% — but the I&D tax was repealed effective tax year 2025. That moved NH from the asterisk column to the clean-zero column.
Two caveats people forget. Washington taxes long-term capital gains — 7% above a standard deduction of $278,000 (2025, indexed each year), and 9.9% on gains above $1 million since 2025. The tax began in 2022 and survived a state Supreme Court challenge in 2023. Tennessee's old Hall income tax (interest and dividends) was repealed in 2021 but still shows up in old guides. The other seven are clean zeros: no wage tax, no investment-income tax, no surprises.
No-income-tax doesn't mean low-tax. Texas leans hard on property tax — effective rates over 1.7% in many counties, among the highest in the country. Tennessee runs a 7% sales tax plus local add-ons that push combined rates near 10%. Florida's homeowners-insurance crisis post-Ian has functionally re-introduced an income-tax-equivalent for coastal residents — premiums above $8K/year aren't unusual in Miami-Dade. The states didn't waive revenue. They shifted the collection point.
Flat-Rate States
Fifteen states run a flat income tax rate in 2026: Arizona 2.5%, Ohio 2.75%, Indiana 2.95%, Louisiana 3.0%, Pennsylvania 3.07%, Kentucky 3.5%, Iowa 3.8%, North Carolina 3.99%, Mississippi 4.0%, Michigan 4.25%, Colorado 4.4%, Utah 4.45%, Illinois 4.95%, Georgia 4.99% (HB 463 of 2026 reached the target three years early), and Idaho 5.3%. Arizona's 2.5% is the lowest flat rate; Idaho's 5.3% is the highest in the bucket.
"Flat" describes the rate, not how much income escapes it. Pennsylvania taxes from the first dollar. Ohio taxes nothing on the first $26,050, then charges $332 plus 2.75% of the excess. Mississippi taxes the first $10,000 after its deductions at 0%. Arizona, Colorado, Idaho and Iowa start from federal figures, so the $16,100 federal standard deduction comes off before their rate applies. So a flat rate alone does not rank a state's actual burden.
Flat doesn't mean simple, either. Pennsylvania's 3.07% sits under a local Earned Income Tax levied by most municipalities and school districts — Pittsburgh's is 3% — and Philadelphia's wage tax is 3.735% for residents. Indiana's 2.95% state rate sits on top of a county tax in all 92 counties (0.5-3.00%, withheld from ). Maryland is not a flat state, but it makes the same point: every county adds 2.25% to 3.30% to state brackets that reach 6.5%, so a Howard County resident (3.20%) in the 5.75% bracket pays 8.95% at the margin before federal. The advertised rate is a starting line, not a finishing line.
Progressive Brackets
The remaining 26 states plus DC use progressive brackets. The top marginal rates that get the headlines (single filers, taxable income): California 13.3% over $1M — that is the 12.3% top bracket plus the 1% Mental Health Services Tax, not a separate surtax on top of it. SB 951 then removed the wage cap, so 1.3% rides on every wage dollar and the combined marginal on wages reaches 14.6%. Hawaii 11% over $325,000. New York 10.9% over $25M. New Jersey and DC 10.75% over $1M. Oregon 9.9% over $125K. Minnesota 9.85% over $203,150. Maine 9.15% over $1M (its 7.15% top bracket plus a 2% surcharge). Massachusetts 9% (5% flat plus the 4% Fair Share surtax over $1,107,750).
The rest of the bracket states top out lower: Vermont 8.75%, Wisconsin 7.65%, Connecticut 6.99%, Delaware 6.6%, Maryland 6.5% (plus county tax), Rhode Island 5.99%, New Mexico 5.9%, Virginia 5.75%, Montana 5.65%, Kansas 5.58%, South Carolina 5.21%, Alabama 5%, Missouri 4.7%, West Virginia 4.58%, Nebraska 4.55%, Oklahoma 4.5%, Arkansas 3.7%, and North Dakota 2.5% — tied with Arizona's flat rate for the lowest top rate of any state that taxes wages.
Top marginal rate is a cocktail-party number. Effective rate is what comes out of your paycheck. A California single filer at $120K pays an effective state rate around 5.8% — about 7.1% counting — not 13.3%. Where the top bracket starts varies wildly. In California, New York and New Jersey it is $1M or more. In Alabama it is $3,000, in Oklahoma $7,200, in Missouri $9,436 and in Virginia $17,000 — so nearly every full-time worker there pays the top rate on most of their income. Pull the calculator if you want your actual number.
A few progressive states tax the first dollar earned. Maine taxes 5.8% from the first dollar of taxable income up to $27,400 — there's no zero bracket. Hawaii's 12 brackets — the most of any US state — start at 1.4% from dollar one. Act 46 of 2024 is widening the lower brackets in steps: for 2026 the bottom four cover the first $24,000 of a single filer's taxable income.
Withholding and State W-4s
Most states with an income tax run a state-level equivalent of the federal W-4. The form name varies — California's is the DE 4, New York's the IT-2104, Wisconsin's the WT-4, Ohio's the IT-4, Missouri's the MO W-4, Maryland's the MW507. They mostly piggyback on your federal W-4 selections (filing status, dependents, additional withholding) but a few states diverge enough to require a separate form. If you don't fill it out, most employers default to single with zero allowances — the highest withholding posture, which is conservative but means a fat refund next April rather than money in your paycheck now.
Two state-specific paystub lines worth knowing. California withholds extra for (1.3% in 2026, no wage cap after SB 951) on top of state income tax — a separate paystub line, not bundled. Pennsylvania has 3.07% state plus the local EIT, which your employer also withholds — your paystub will show three separate lines: federal, PA state, and PA local.
Residency: Domicile vs the 183-Day Test
State tax residency is decided by two tests that run in parallel — fail either and you're a resident. Domicile is the intent-based test: where is your true permanent home, the place you intend to return to. Statutory residency is the mechanical test: most states say 183+ days physically present plus a permanent place of abode (a place you keep year-round, not just rent for a week). New York and California are the most aggressive at auditing both.
Domicile is decided on the boring details. Where you vote. Where your driver's license and car are registered. Where your doctor and dentist are. Where your kids go to school. Where your safe-deposit box is. Where you keep your dog's vet records — yes, really, the New York audit checklist names it. Snowbird audits aren't TV myth; they keep accountants in Florida and Texas full-time-employed catching New Yorkers who claimed Florida residency but kept a Westchester address, a Westchester pediatrician, and a Met Gala invite list.
The 183-day count is audited via credit-card statements, EZ-Pass logs, cell-phone tower pings, and airline records. In New York, any part of a calendar day counts as a day, with narrow exceptions such as travel straight through the state. Track days in a calendar app from January 1 if you're trying to break residency. New York's auditors are professional and patient. Build the paper trail before the audit, not after.
Reciprocity Agreements
A reciprocity agreement lets you pay income tax only to your state of residence, not to the state where your employer is based. More than a dozen states plus DC have at least one agreement, almost all in the Midwest and Mid-Atlantic — among them Illinois, Indiana, Iowa, Kentucky, Maryland, Michigan, Minnesota, Montana, New Jersey, North Dakota, Ohio, Pennsylvania, Virginia, West Virginia and Wisconsin. Agreements are pairwise, so check the specific pair. If you live in NJ and work in PA, you file a single NJ return. Your employer withholds NJ tax for you. No reciprocity = file two returns and credit one against the other.
The famous gap: New York refuses to sign reciprocity with anyone. NY-NJ commuters and NY-CT commuters file two state returns every April, claim a credit on their resident-state return for tax paid to NY, and live with the cash-flow hit through the year. The credit usually zeroes out the double tax at the end, but withholding-side it means your paycheck looks lighter than it should, and New York holds the employer-side withholding all year.
City and Local Taxes
Roughly 5,000 local jurisdictions — cities, counties and school districts — levy a local income tax, almost always layered on top of state tax and withheld separately from your paycheck. Many are small, around 1% in a typical Pennsylvania municipality. A few are large enough to redraw the map of where it makes sense to live.
New York City: 3.078% to 3.876% resident income tax on top of NY state — a Manhattan single filer at $250K runs an effective combined NY-state-plus-NYC rate of about 10.1%. Yonkers residents add a surcharge equal to 16.75% of their NY state liability. Philadelphia: 3.735% resident wage tax (3.425% non-resident), flat, no exemption, taxes from dollar one. Detroit: 2.4% resident, 1.2% non-resident. Pittsburgh: 3% resident. Cleveland and Columbus: 2.5% each. Cincinnati: 1.8%. Wilmington, Delaware: 1.25%.
Two state-systems where local tax is universal: Indiana (county tax in all 92 counties, 0.5-3.00%, withheld from alongside state) and Maryland (every county adds 2.25% to 3.30% on top of state brackets that reach 6.5%). Ohio runs roughly 600 RITA and CCA municipalities with separate filings — moving from one Cleveland suburb to another can change your local tax rate. Kentucky cities and counties levy occupational license taxes on wages that function similarly. If you're moving for a job, the local tax should be on your spreadsheet alongside rent and commute.
How State Tax Meets Federal
Two interactions matter. First, the cap: the Tax Cuts and Jobs Act of 2017 capped the federal deduction for state and local taxes at $10,000. raised it to $40,000 for 2025 and $40,400 for 2026, rising 1% a year through 2029 before reverting to $10,000 in 2030. The higher cap phases back down toward $10,000 above roughly $500K of income, and it only matters if you itemize. A high-tax-state professional who pays $60K of state and local tax still deducts at most $40,400.
Second, three states still let you subtract federal income tax on your state return — a reverse interaction. Alabama allows the whole federal tax. Missouri allows a percentage that falls as income rises — 15% at $100K of Missouri , nothing above $125,000 — capped at $5,000 single / $10,000 joint. Oregon allows up to $8,750 for 2026, stepping down from $125,000 of federal AGI (single) to nothing at $145,000. Iowa, Louisiana and Montana have repealed theirs, so older guides that list them are out of date.
Pass-through-entity tax (PTET) elections — available in over thirty states — let owners of S-corps and partnerships pay state tax at the entity level, where it's deductible on the federal return as a business expense rather than a state-tax deduction subject to the cap. For a physician partner or a Big-4 senior in a partnership-structured firm, that can be worth thousands a year. Worth asking your accountant about if you have ownership income.