State income tax coverage
What the calculators know about your state, and what they do not.
Federal tax is the same wherever you live. State tax is not, and modelling fifty jurisdictions properly is more work than everything else on this site put together. So the calculators are explicit about which of three things they are doing for your state: computing it exactly, estimating it with a stated assumption, or leaving it out and saying so.
This page is generated from the engine. Every rate below is read from the same table the calculators execute, with the link to the state revenue department it was taken from and the date it was checked.
No state income tax — 9 states
Exact, and the easiest kind of exact: the answer is zero. These states do not tax earned income at all, so the federal figure is your whole liability.
Alaska, Florida, Nevada, New Hampshire, South Dakota, Tennessee, Texas, Washington, Wyoming.
New Hampshire is on the list because its interest-and-dividends tax was repealed for tax periods after 2024, and it never taxed earned income. Washington taxes capital gains above a threshold but not ordinary self-employment income, which is what these calculators compute.
Computed exactly — 2 states
A single rate, and nothing in the calculation that depends on a question the form does not ask.
| State | Rate | What it applies to | Source | Verified |
|---|---|---|---|---|
| North Carolina | 3.99% | Federal AGI, less the state's own deduction | www.ncdor.gov | 2026-09-02 |
| Pennsylvania | 3.07% | Net profit, with no deduction | www.pa.gov | 2026-09-02 |
Estimated, with the assumption stated — 2 states
A single rate, but something in the calculation depends on a fact the calculator does not collect. The figure is shown with the assumption printed next to it rather than presented as exact.
| State | Rate | The assumption | Source | Verified |
|---|---|---|---|---|
| Illinois | 4.95% | Illinois grants an exemption allowance of $2,925 per person claimed rather than a standard deduction by filing status. This figure assumes no dependants; each additional dependant reduces Illinois tax by about $145. Illinois does not allow the federal qualified business income deduction. | tax.illinois.gov | 2026-09-02 |
| Indiana | 2.95% | Indiana grants a $1,000 exemption per person claimed; this assumes no dependants. It also charges a COUNTY income tax on top of the state rate, which this figure does not include — the 2026 county rates run from 0.50% to 2.95%, so in the highest county the county tax roughly doubles the state bill. Look up your county of residence as of 1 January. | www.in.gov | 2026-09-02 |
Not covered — 38 states
For these, the calculators show a complete federal figure and a notice saying the state part is missing. They never show a zero. Telling somebody in California that their state tax is $0 would be considerably worse than telling them nothing, because a zero looks like an answer.
Alabama, Arizona, Arkansas, California, Colorado, Connecticut, Delaware, District of Columbia, Georgia, Hawaii, Idaho, Iowa, Kansas, Kentucky, Louisiana, Maine, Maryland, Massachusetts, Michigan, Minnesota, Mississippi, Missouri, Montana, Nebraska, New Jersey, New Mexico, New York, North Dakota, Ohio, Oklahoma, Oregon, Rhode Island, South Carolina, Utah, Vermont, Virginia, West Virginia, Wisconsin.
Why the list is short, and how a state gets on it
Every rate here was read from the state's own revenue department. That is slower than copying a summary table, and it is the reason the list grows one state at a time — but the aggregator consulted while building this page described Louisiana as both a 3% flat state and a 4.25% bracketed one, in the same paragraph. One of those is wrong and there is no way to tell which without going to the source.
A rate alone is also not enough, because the base differs by state and getting it wrong is invisible. Pennsylvania allows no standard deduction and no personal exemption, and does not start from federal adjusted gross income at all — so its 3.07% applies to your full net profit. North Carolina starts from federal AGI, allows its own standard deduction, and does not allow the federal qualified business income deduction, so its base is higher than the federal one. Applying either state's rate to your federally taxable income would produce a plausible number that is wrong by hundreds of dollars.
A state ships here when both its rate and its base are sourced for tax year 2026. Where only part is sourced, the missing part is left missing rather than filled in — North Carolina computes for a single filer and declines for a joint one, because the 2026 joint standard deduction does not appear in the publication that confirms the others.
Local taxes are not included anywhere
Several states allow cities and school districts to levy their own income tax on top. Pennsylvania municipalities almost all do. Those are charged separately, are not in any figure on this site, and are worth checking with your municipality.