State Income Tax vs. Federal Income Tax: What's the Difference?

Every paycheck has the potential for two separate income tax lines — federal and state — and they don't work identically. Here's how they differ, and why your state matters just as much as your salary.

Federal income tax: the same everywhere

Federal income tax applies to every U.S. worker regardless of where they live, using the same tax brackets and standard deduction nationwide. For 2026, single filers pay 10% on the first $12,400 of taxable income, 12% on the next bracket, and so on up through higher brackets for higher earners — after subtracting the $16,100 standard deduction (or itemized deductions, if higher).

State income tax: it depends entirely on where you live

States fall into three broad categories:

No income tax at all (9 states): Alaska, Florida, Nevada, New Hampshire, South Dakota, Tennessee, Texas, Washington, and Wyoming. Residents of these states only deal with federal tax and FICA on their paychecks.

Flat-rate income tax: A handful of states apply a single flat rate to all income regardless of how much you earn — simpler to calculate, but not adjusted for income level the way federal brackets are.

Progressive-bracket income tax: Most states with an income tax use a bracket system similar to the federal government, where higher portions of income are taxed at higher rates. California, New York, and Oregon are examples with notably high top brackets.

Key differences beyond the rate itself

  • Standard deductions differ. Federal and state standard deductions are usually different amounts, and some states don't offer one at all.
  • Local taxes stack on top in some places. Cities like New York City and Philadelphia add their own local income tax on top of both state and federal withholding.
  • Reciprocity agreements exist between some states. If you live in one state and work in a neighboring one, reciprocity agreements can mean you only pay income tax to your home state instead of both.
  • Federal tax funds different things than state tax. Federal income tax primarily funds national programs (defense, Social Security, Medicare, etc.), while state income tax typically funds state-level services like education and infrastructure.

Side-by-side example: $60,000 salary

No-tax state (e.g. Texas)5% flat-tax stateProgressive-bracket state (approximate)
Federal tax$5,020$5,020$5,020
State tax$0$3,000varies, often $1,800–$3,500
FICA$4,590$4,590$4,590
Take-home pay$50,390$47,390~$47,000–$48,600

The same salary can result in a meaningfully different take-home number purely based on state of residence — which is why state matters as much as salary when comparing job offers in different locations.

See your exact combined tax picture

Federal tax is the same everywhere, but state tax varies enough to shift your real take-home pay by thousands of dollars a year. Use the PayGauge paycheck calculator to see your exact federal and state tax breakdown together.

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