Working overtime raises your federal income tax because those extra wages are taxed like any other pay, but how overtime affects your tax return in practice usually means a larger refund, not a larger bill. Two things drive that outcome: payroll systems tend to over-withhold on unusually large paychecks, and a new federal deduction available for tax years 2025 through 2028 lets many hourly workers write off the premium portion of their overtime.
Overtime Is Taxed Like Regular Wages
Federal law defines gross income broadly and does not carve out hours worked beyond a standard schedule.1Office of the Law Revision Counsel. 26 USC 61 – Gross Income Defined The Fair Labor Standards Act requires covered employers to pay at least one-and-a-half times your regular rate for hours over 40 in a workweek, but that premium carries no special tax shelter.2U.S. Department of Labor. Overtime Pay On your W-2, base wages and overtime combine into one compensation figure, and that combined number is what your tax is calculated on.
If you picked up consistent extra shifts for several months, your annual gross income could land thousands of dollars above the base salary you signed on for. Every one of those dollars has to be reported.
The 2025–2028 Overtime Deduction
The One, Big, Beautiful Bill Act created a federal deduction for what the IRS calls “qualified overtime compensation,” available for tax years 2025 through 2028. The deductible amount is the premium portion of overtime pay, not the entire overtime check. In a standard time-and-a-half arrangement, only the “half” above your regular hourly rate qualifies.3Internal Revenue Service. Questions and Answers About the New Deduction for Qualified Overtime Compensation
The math is straightforward. If your regular rate is $25 per hour and you earn $37.50 per overtime hour, the $12.50 premium for each overtime hour is the qualified portion. If your employer pays double time, only the FLSA-required one-half premium counts toward the deduction, not the full extra rate.3Internal Revenue Service. Questions and Answers About the New Deduction for Qualified Overtime Compensation
The deduction is capped at $12,500 per return, or $25,000 for married couples filing jointly. It phases out once modified adjusted gross income exceeds $150,000 (or $300,000 for joint filers).4Internal Revenue Service. One, Big, Beautiful Bill Act – Tax Deductions for Working Americans and Seniors Both itemizers and non-itemizers can claim it, so you don’t need to give up the standard deduction to benefit.
Who Qualifies
The deduction is limited to workers covered by and not exempt from the FLSA’s overtime rules. In practice, that means hourly, non-exempt employees. Salaried workers classified as exempt do not qualify, even if their employer voluntarily pays them extra for long weeks. Independent contractors are also excluded.3Internal Revenue Service. Questions and Answers About the New Deduction for Qualified Overtime Compensation
To claim the deduction, you must include your Social Security number on the return and, if married, file jointly.4Internal Revenue Service. One, Big, Beautiful Bill Act – Tax Deductions for Working Americans and Seniors Starting in 2026, employers are required to report qualified overtime compensation separately on your W-2, which will make the deductible amount easy to identify at filing time.3Internal Revenue Service. Questions and Answers About the New Deduction for Qualified Overtime Compensation
Why Overtime Paychecks Look Overtaxed
Overtime checks feel disproportionately small because of how payroll systems estimate withholding. Employers use methods from IRS Publication 15-T to calculate federal tax each pay period.5Internal Revenue Service. About Publication 15-T, Federal Income Tax Withholding Methods When a paycheck is larger than usual, the software often annualizes it, treating the check as though you earn that inflated amount every period for the entire year. A warehouse worker pulling 20 overtime hours in one week can have withholding calculated as if their annual income were double what it actually is.
Employers also have the option of withholding a flat 22% on overtime or bonus pay when it is paid separately from regular wages.6Internal Revenue Service. Publication 15 (2026), (Circular E), Employer’s Tax Guide If your actual marginal rate is 12%, that flat 22% takes more than you really owe. The overage doesn’t vanish. It sits with the Treasury until you file.
Will You Get a Bigger Refund or Owe More?
Your tax return is a reconciliation: total tax owed for the year minus total payments already made through withholding. If payroll over-withheld during heavy overtime weeks, the IRS sends the difference back as a refund. This is the most common outcome for workers with sporadic overtime, because the annualizing method consistently overestimates their annual income.
The opposite happens to workers who earn steady overtime throughout the year without adjusting their W-4. If withholding was calibrated for a base salary and you quietly added $15,000 in overtime, the system may not have caught up. You could owe a balance at filing, and if that balance is large enough, the IRS may assess an underpayment penalty.
The new overtime deduction pushes the balance further toward a refund. If you qualify, your taxable income drops by up to $12,500 ($25,000 joint), but your employer’s withholding during the year probably didn’t account for that deduction. Workers who take it for the first time should expect a noticeably larger refund than in prior years, assuming their withholding stayed the same.
Overtime and Tax Brackets
A common worry is that overtime will push you into a higher bracket and cost you money overall. It won’t. The federal income tax is progressive: each chunk of income is taxed only at the rate for the bracket it falls within. If overtime moves you from the 12% bracket into the 22% bracket, only the dollars above the threshold face the higher rate. Everything below stays taxed at 10% and 12%. Earning more through overtime always leaves you with more after-tax income for the year.
Credits and Payroll Taxes That Can Shift the Outcome
Higher income from overtime can reduce or eliminate certain tax credits. The Earned Income Tax Credit is the most sensitive; a worker comfortably within EITC range in the first half of the year can lose the credit entirely after a few months of steady overtime. The Child Tax Credit is more forgiving. For 2026, it’s worth up to $2,200 per qualifying child and does not begin phasing out until adjusted gross income exceeds $200,000 ($400,000 for joint filers).7Internal Revenue Service. Child Tax Credit For a household near either threshold, losing part of a credit can offset a portion of the overtime earnings.
Social Security and Medicare taxes also apply to every overtime dollar. Social Security is 6.2% on earnings up to the wage base, which for 2026 is $184,500.8Social Security Administration. 2026 Cost-of-Living Adjustment (COLA) Fact Sheet Medicare is 1.45% with no cap, and an additional 0.9% applies once wages exceed $200,000 ($250,000 for joint filers).9Internal Revenue Service. Topic No. 560, Additional Medicare Tax The new overtime deduction reduces income tax only. It does not reduce your FICA obligation.
Adjusting Your W-4 If Overtime Is Regular
If overtime is a routine part of your income rather than a one-off, updating your Form W-4 prevents the mismatch between withholding and actual tax. The simplest approach is to enter an additional dollar amount in Step 4(c), which tells your employer to withhold extra from each paycheck.10Internal Revenue Service. FAQs on the 2020 Form W-4> The IRS Tax Withholding Estimator can help you figure the right amount.11Internal Revenue Service. Tax Withholding Estimator
Getting withholding right matters because the IRS charges an underpayment penalty when you owe more than $1,000 at filing time and did not meet one of two safe harbors: withholding at least 90% of the current year’s tax, or at least 100% of the prior year’s tax (110% if your adjusted gross income exceeded $150,000).12Internal Revenue Service. Underpayment of Estimated Tax by Individuals Penalty The penalty is calculated at the IRS’s quarterly interest rate, which stood at 7% for early 2026.13Internal Revenue Service. Quarterly Interest Rates It’s avoidable with a mid-year W-4 update once you see overtime becoming a pattern.
For workers with unpredictable schedules, slight over-withholding is the safer bet. You get the excess back as a refund and skip the arithmetic of estimating your annual overtime in July. The tradeoff is less cash per paycheck now in exchange for no surprise in April.