How overtime pay affects your tax withholding

The myth: overtime has its own tax rate

There is no separate “overtime tax rate.” Every dollar you earn — regular hours or overtime — is combined into one number and taxed using the same 2026 federal brackets. The Fair Labor Standards Act requires overtime pay itself (time-and-a-half for hours over 40 in a week, for non-exempt employees), but the IRS doesn't tax that pay any differently once it lands in your paycheck.

So why does the withholding look higher?

Payroll withholding tables work by annualizing each paycheck: they take what you earned this period, multiply it out as if you earned that amount every period all year, and withhold based on that projected annual total. A week with a lot of overtime looks, to that formula, like a much higher-paying job — so more gets withheld from that specific check.

That's a withholding estimate, not your actual tax bill. It's the same reconciliation the child tax credit, refund, or amount-owed process handles every spring: over-withheld weeks and under-withheld weeks average out against your real annual tax liability when you file.

What actually determines your real tax

Your real federal tax is based on your total annual taxable income, not any single paycheck. Working extra overtime hours does raise your real annual income, and once your total taxable income crosses into a higher federal bracket, that portion above the line is taxed at the higher rate — same as a raise would do. But that's a function of earning more overall, not a special “overtime penalty.”

What this means for your paycheck

If a heavy-overtime week left you with less take-home than expected, run the numbers for that specific check using the calculator below — it applies the same withholding logic your payroll system uses, so you can see exactly where it went.