Two people can earn the identical salary, contribute the same to retirement, and still take home noticeably different amounts — simply because they live in different states. Federal income tax and FICA are the same everywhere, but state income tax ranges from nothing at all to north of 13% at the top. If you're comparing job offers in different states or thinking about relocating, this is one of the biggest variables in your real pay.
The three kinds of state tax systems
- No income tax. Nine states levy no broad personal income tax: Alaska, Florida, Nevada, New Hampshire, South Dakota, Tennessee, Texas, Washington, and Wyoming. In these states, your take-home pay is determined entirely by federal tax and FICA.
- Flat tax. A growing number of states apply a single rate to all taxable income — for example, a flat percentage regardless of how much you earn. Simple to predict, and often moderate.
- Progressive tax. Most states use brackets like the federal system, where higher income is taxed at higher marginal rates. California, New York, and Hawaii sit at the high end.
How much difference does it make?
Consider a $120,000 salary. In a no-income-tax state, you pay $0 in state tax on that income. In a high-tax progressive state, the state alone might take several thousand dollars a year. Over a career, that gap compounds into a very large number — though it's only half the story.
Don't forget the other side of the ledger
A state with no income tax still needs revenue, and it usually makes up the difference elsewhere: higher sales tax, higher property tax, or various fees. Texas and New Hampshire, for instance, are known for relatively high property taxes. So "no income tax" does not automatically mean "cheaper place to live." The honest comparison weighs your full cost of living — housing, sales tax, property tax — against the income tax you'd save.
A note on accuracy
State tax is genuinely complicated. Beyond the headline rate, states differ in their standard deductions, personal exemptions, credits, and local or city taxes layered on top. Any quick estimate — including ours — uses simplified rate structures to stay fast and broadly useful. For an exact figure, your state's revenue authority or a tax professional is the authority.
Compare states on your own salary
The clearest way to see the effect is to run your salary through different states. Our paycheck calculator lets you pick any state and instantly see how federal tax, FICA, and state tax combine into your take-home pay. Switch the state and watch the net change.
If a bracket comparison surprises you, our guide on understanding tax brackets explains why your marginal rate and your effective rate are not the same thing — which matters as much for state tax as it does federally.
General information, not tax advice. State rules and rates change; verify with your state revenue authority.