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...