How Overtime Is Actually Taxed
Overtime income is ordinary income — taxed at your marginal federal income tax rate, FICA (7.65%), and applicable state taxes, exactly like regular wages. There is no special 'overtime tax rate.' The reason overtime paychecks feel more heavily taxed: withholding systems annualize each paycheck, and a larger-than-usual paycheck implies higher annual income, triggering higher withholding. But the year-end tax liability is the same regardless.
Marginal vs. Average Tax Rate: The Key Distinction
U.S. income taxes use a marginal system: higher income is taxed at a higher rate on the marginal dollars, not on all income. If overtime pushes $5,000 of income from the 12% bracket into the 22% bracket: only that $5,000 is taxed at 22%. Your income below the threshold remains in the lower bracket. This means overtime income never makes you 'worse off' overall — you always keep more by earning more.
Net overtime income after federal tax and FICA at common income levels
| Worker | Regular Income | OT Income | Tax on OT (Fed+FICA) | Net OT Keep |
|---|---|---|---|---|
| Worker in 12% bracket | $35,000/yr | $5,000/yr | ~$980 (12% + 7.65%) | ~$4,020 |
| Worker in 22% bracket | $50,000/yr | $8,000/yr | ~$2,372 (22% + 7.65%) | ~$5,628 |
| Worker in 24% bracket | $100,000/yr | $12,000/yr | ~$3,798 (24% + 7.65%) | ~$8,202 |
Even at the 37% top marginal rate, the net return on overtime is positive: earn $100 in overtime, pay $44.65 in taxes (37% federal + 7.65% FICA), keep $55.35. There is no tax rate high enough to make overtime income a negative — you always keep more by working than by not working, regardless of bracket.
Why Overtime Paychecks Look Over-Withheld
Payroll withholding systems annualize each paycheck: if your regular $1,200 biweekly paycheck suddenly is $1,600 with overtime, the system multiplies $1,600 × 26 (pay periods) = $41,600 implied annual income — a higher bracket. More withholding is taken from that paycheck. But if this was a one-time OT week, your actual annual income is $31,200, not $41,600. At year-end, you’d receive a refund of the over-withheld amount.
Tax Planning for Regular Overtime Workers
If you consistently work overtime, consider: (1) Increasing pre-tax 401(k) contributions — each OT dollar contributed reduces taxable income; (2) Adjusting W-4 withholding to more accurately reflect your actual expected annual income, reducing overwithholding; (3) Using HSA contributions if eligible — each dollar reduces taxable income including the OT portion.
Calculate Your Overtime Gross Pay — Then Estimate Net
Find your gross overtime pay, then apply your marginal tax rate to estimate what you’ll actually keep.