A PTO payout is taxed as ordinary income at your normal marginal rate, but the amount withheld from the check usually looks much larger than you expect. That’s because the IRS classifies PTO payout taxes under the supplemental wage rules: your employer either applies a flat 22% federal withholding to the lump sum or combines it with your regular pay in a way that temporarily inflates the withholding percentage. Social Security and Medicare come out at the usual rates. Nothing about this changes what you actually owe for the year. Any gap between what was withheld and what you truly owe gets settled when you file your return.
What Actually Comes Out of a PTO Payout
Four things get withheld: Social Security, Medicare, federal income tax, and (in most states) state income tax. The FICA pieces are straightforward and identical to a normal paycheck. The federal income tax piece is where the payout starts looking strange.
Your employer withholds 6.2% for Social Security and 1.45% for Medicare from the payout, the same rates applied to every regular paycheck.1Internal Revenue Service. Topic No. 751, Social Security and Medicare Withholding Rates Social Security tax only applies to earnings up to $184,500 in 2026.2Social Security Administration. Contribution and Benefit Base If your regular wages already pushed you past that cap, no additional Social Security tax comes out of the payout. Medicare has no cap, so the 1.45% always applies. An additional 0.9% Medicare tax kicks in once your total wages for the year exceed $200,000, and your employer is required to start withholding it at that threshold regardless of your filing status.
Federal income tax is the moving piece. The IRS treats PTO payouts as supplemental wages, which is the same category that covers bonuses, commissions, and severance.3Internal Revenue Service. Publication 15 (2026), (Circular E), Employer’s Tax Guide – Section: 7. Supplemental Wages That label doesn’t create a separate tax rate; your PTO payout is still ordinary income at whatever marginal rate applies to your year. It only controls how your employer calculates withholding on the payment itself, and employers get to choose between two methods.
The Flat 22% Method
When the payout is issued as a separate payment, or combined with regular pay but tracked separately in the payroll system, the employer can withhold a flat 22% for federal income tax.3Internal Revenue Service. Publication 15 (2026), (Circular E), Employer’s Tax Guide – Section: 7. Supplemental Wages Your W-4 elections don’t factor in. The employer takes 22% off the top.
Whether that’s good or bad depends on your bracket. If your taxable income puts you in the 12% bracket, you’ll be over-withheld and get the difference back when you file. If you’re in the 32% or 35% bracket, you’ll be under-withheld and may owe. The 22% is a withholding convenience, not a tax rate.
The Aggregate Method
If the employer pays the PTO alongside your regular wages without separating the amounts, it must use the aggregate method. The payroll system adds the PTO to your normal pay for the period, treats the combined total as a single paycheck, and runs it through your W-4 and the standard tax tables.3Internal Revenue Service. Publication 15 (2026), (Circular E), Employer’s Tax Guide – Section: 7. Supplemental Wages
This is where sticker shock happens. Say you normally earn $3,000 per biweekly period and your payout adds $7,000. The payroll system sees a $10,000 paycheck and extrapolates to an annual salary of $260,000. It withholds as if you earn that much every period. The result is a withholding percentage far higher than what you see on a normal check. The annualized income is fictional and the over-withholding corrects itself when you file, but in the moment it can feel like a third or more of the payout vanished. This is the single most common source of confusion around PTO taxes, and it’s a timing issue, not a permanent loss.
How to Reduce Over-Withholding
If you know a payout is coming, two moves can keep more cash in your pocket now instead of making you wait for a refund.
Ask your employer whether the payout can be issued as a separate check with the amounts tracked separately in payroll. That makes the flat 22% method available, which usually produces less withholding than the aggregate method for employees earning under roughly $100,000. Employers aren’t required to accommodate the request, but many will if payroll can handle it.
You can also file an updated Form W-4. Step 4(b) on the 2026 W-4 lets you claim additional deductions, which reduces withholding on future paychecks.4Internal Revenue Service. Form W-4 (2026) Employee’s Withholding Certificate If you’ve already been over-withheld on a payout, adjusting Step 4(b) at your next job helps you recoup the difference across the year rather than waiting until filing. The IRS Tax Withholding Estimator at irs.gov can tell you what the adjustment should be.
State and Local Taxes on the Payout
PTO payouts are subject to state income tax withholding in every state that has an income tax. How the state calculates withholding on the lump sum varies. Some states set a specific supplemental rate, ranging from under 2% to around 8%. Some instruct employers to mirror the federal method. Others require all compensation to run through the standard withholding tables based on the state W-4 equivalent.
Local income taxes stack on top where cities or counties impose them. In areas with combined state and local rates above 10%, total withholding from a payout can exceed 35% once federal, state, local, and FICA are added together.
For remote employees, withholding generally follows the state where the work is performed, not the state where the employer is headquartered. A few states apply a convenience-of-the-employer test that taxes wages based on the office location instead, which can create double-withholding that has to be sorted out at filing.
Rolling a Payout Into Your 401(k)
Some employers let you direct part or all of a termination payout into a 401(k), which defers both the income and the federal income tax on the amount contributed. The IRS has specifically approved this: a qualified plan can be amended to let a departing employee elect to contribute the cash value of unused PTO as an elective deferral, as long as the contribution doesn’t push total deferrals past the annual limit.5Internal Revenue Service. Revenue Ruling 2009-32 – Paid Time Off Contributions at Termination of Employment
The 2026 standard 401(k) deferral limit is $24,500.6Internal Revenue Service. 401(k) Limit Increases to $24,500 for 2026; IRA Limit Increases to $7,500 Any contributions you’ve already made during the year count against that cap, so if you’ve deferred $20,000 through regular payroll already, only $4,500 of your payout can go into the plan. Amounts contributed don’t appear as taxable income until you take distributions. Not every employer offers this option; it requires a specific plan amendment, so ask HR before your last day.
The Constructive Receipt Trap
If your employer offers a mid-year option to cash out unused PTO and you decline, you may still owe tax on the amount you turned down. Under the constructive receipt doctrine, income is taxable in the year it’s made available to you, even if you choose not to take it.7Office of the Law Revision Counsel. 26 USC 451 – General Rule for Taxable Year of Inclusion
Here’s how it plays out. Your employer announces in October that employees can cash out up to 40 hours. You decide to carry those hours into next year. The IRS considers that cash available to you now because you had an unrestricted right to take it, and your employer may be required to report the value as taxable wages on this year’s W-2 even though no check was issued.8GovInfo. 26 CFR 1.451-2 – Constructive Receipt of Income
The exception is when the choice between cash-out and carryover is made before the PTO accrues. If you commit at the start of the year, before you’ve earned the hours, constructive receipt generally doesn’t apply.
Taking the Leave vs. Cashing It Out
From a pure tax standpoint, using your PTO as actual time off costs the same in total tax as receiving it as a payout. Either way, the wages behind those hours are ordinary income.
The difference is in withholding. A week of vacation shows up on your paycheck like any other week, and withholding follows your usual W-4. The same hours paid as a lump sum run through the supplemental wage rules, often producing a much larger upfront tax bite. Your annual bill ends up the same; the payout route just means more of your money sits with the IRS until you file. If you have the flexibility, burning down your balance before your last day keeps paychecks predictable. If your state mandates a payout, you’re entitled to the cash regardless.
How the Payout Shows Up on Your W-2
Your employer rolls the payout into your annual Form W-2 along with everything else. It’s included in Box 1 (wages), Box 3 (Social Security wages, up to the $184,500 wage base), and Box 5 (Medicare wages).2Social Security Administration. Contribution and Benefit Base Federal withholding appears in Box 2, state withholding in Box 17. The W-2 doesn’t break the payout out as a separate line; it’s part of your total wages. Keep your final pay stub so you can verify the numbers match.
When you file Form 1040, tax is calculated on your actual total income for the year. If the flat 22% or the aggregate method took more than you owe, the excess comes back as a refund. If you’re in a bracket above 22% and your employer used the flat method, you may owe a bit more. The withholding method doesn’t change your final bill. It only changes when you and the IRS settle up.