A state tax refund may be taxable on your federal return — but only if you received a tax benefit from deducting those state taxes last year. Read Next: 3 Sneaky Things You Didn’t Realize Your Tax ...

Some states give multiple tax breaks to retirees. Nine states have no income tax, including Washington, which only taxes high earners' capital gains.

State income tax rates vary widely across the U.S. and can impact everything from your take-home pay to your long-term financial goals. State income tax is a tax levied by individual states on your ...