Is Overtime Taxed More? What Really Happens

The withholding trap

Why does overtime look more heavily taxed?

When your employer cuts a paycheck that includes overtime, they have to decide how much federal income tax to withhold on that extra pay. The IRS gives employers two options for supplemental wages like overtime, and both tend to take out more than your actual marginal rate:

The flat method (22%)

Under IRS Publication 15-T, employers can withhold a flat 22% on supplemental wages paid separately or clearly identified on the pay stub. If your real marginal tax bracket is 12% or even 10%, that 22% withholding is nearly double your actual rate. The excess is not lost — it comes back as a refund when you file your return. But it does make your OT paycheck feel disappointingly small.

For supplemental wages exceeding $1 million in a single calendar year, the mandatory flat rate jumps to 37% (the top marginal bracket for 2026). This only matters for very high earners such as executives with large bonuses on top of high base salaries.

The aggregate method

Some employers combine your regular and overtime pay into one lump, annualize the total, and calculate withholding as if you earned that inflated amount every pay period. If you normally earn $1,500 biweekly and one check is $2,200 because of overtime, the system annualizes $2,200 × 26 = $57,200, then withholds at the bracket for that income — even though your real annual salary might be only $45,000. The aggregate method almost always over-withholds for workers who do not earn overtime every single pay period.

How is overtime actually taxed at filing time?

When you file your Form 1040, there is no separate line for overtime income. The IRS sees one number in W-2 Box 1: your total wages, salaries, and tips — regular and overtime combined. That total flows into your adjusted gross income, which determines your tax bracket. Whether $10,000 of your income came from 250 hours of overtime or 250 hours of regular work makes zero difference to the tax calculation.

This means:

• A worker earning $50,000 entirely from regular hours pays the same federal income tax as a worker earning $40,000 regular + $10,000 overtime.
• The only way overtime can increase your tax rate is if the additional income pushes your top dollars into the next marginal bracket — but that is also true if you got a raise, a bonus, or any other additional income.

Does overtime affect FICA differently?

No. Overtime pay is subject to the same FICA taxes as regular wages:

If heavy overtime pushes your total wages past the $184,500 Social Security wage base, you actually stop paying the 6.2% SS portion on earnings above that line — which can make your later paychecks slightly larger. Medicare, however, never caps.

Worked example: $25/hour worker with 10 hours OT

Consider a single filer earning $25/hour, working 40 regular hours plus 10 overtime hours in a biweekly pay period (80 regular + 20 OT hours):

The OT pay has an effective withholding rate of about 29.7% ($222.38 withheld on $750), while the regular pay withholding rate is roughly 15.1%. It looks like overtime is taxed nearly twice as much. But when this worker files, their actual federal income tax on total earnings of roughly $57,200 will average about 9–10%, and the IRS will refund the over-withholding.

Illustrative example using 2026 federal rates. Your actual withholding depends on your W-4, filing status, and state taxes. Use the overtime after-taxes calculator for your specific numbers.

Can overtime push you into a higher tax bracket?

Yes, but this is not the disaster people imagine. Federal income tax brackets are marginal, meaning only the dollars that cross into the next bracket are taxed at the higher rate. Your earlier dollars stay at the lower rate.

For example, if the 12% bracket ends at $47,150 and your regular income is $45,000, earning $5,000 of overtime means $2,150 is taxed at 22% instead of 12%. The extra tax on that slice is about $215 — on $5,000 of overtime gross pay. That is still far less than the 22% flat withholding rate applied to the entire $5,000.

What can you do about overtime over-withholding?

You have a few options to reduce the paycheck shock:

• Adjust your W-4: If you consistently work overtime, you can reduce your withholding by claiming additional adjustments on Form W-4. Use the W-4 withholding calculator to find the right number. Be careful not to under-withhold, or you may owe a penalty at filing time.
• Increase pre-tax deductions: Contributing more to a 401(k) or HSA reduces the wages subject to withholding, which offsets some of the over-withholding on overtime. See our paycheck after 401(k) calculator.
• Wait for the refund: If you prefer not to adjust your W-4, the over-withholding simply comes back when you file. Some workers prefer this forced savings approach.

How do states treat overtime?

State income taxes follow the same principle: overtime is not taxed at a special rate. States that have a flat income tax (like Illinois at 4.95% or Pennsylvania at 3.07%) simply apply that rate to all wages including overtime. States with progressive brackets work the same way as the federal system — only the marginal dollars in the next bracket face a higher rate. And nine states (Florida, Texas, Nevada, Washington, Wyoming, South Dakota, Alaska, Tennessee, and New Hampshire) have no state income tax on wages at all.