A PTO payout is taxed as ordinary income. Social Security and Medicare come out at the usual rates, and federal income tax withholding follows the IRS’s supplemental wage rules, which means either a flat 22% is taken off the top or the payout is combined with your regular pay in a way that temporarily inflates the withholding percentage. Neither method changes what you actually owe for the year. When you understand PTO payout taxes, the surprise on the check stub is almost always a withholding issue, not a higher tax rate, and any over-withholding comes back when you file.
Why the Withholding Looks So High
The IRS classifies a PTO payout as supplemental wages, the same category as bonuses, commissions, and severance. That label doesn’t create a separate tax rate. Your payout is still ordinary income, taxed at whatever marginal bracket applies to your total earnings. What the label controls is how much your employer withholds upfront.1Internal Revenue Service. Publication 15 (2026), (Circular E), Employer’s Tax Guide – Section: 7. Supplemental Wages
Employers have two ways to run that calculation, and which one they pick is the biggest reason your net PTO check looks the way it does.
The Flat 22% Method
If the payout is issued as a separate check, or paid alongside regular wages with the amounts identified separately in the payroll system, the employer can withhold a flat 22% for federal income tax. Your W-4 elections don’t factor in.1Internal Revenue Service. Publication 15 (2026), (Circular E), Employer’s Tax Guide – Section: 7. Supplemental Wages
If your marginal bracket is near 22%, this lands close to what you owe. If you’re in the 12% bracket, you’ll be over-withheld and get money back. If you’re in the 32% or 35% bracket, you may owe more at filing. The 22% is a withholding convenience, not a tax rate.
One rare exception: supplemental wages above $1 million in a calendar year must be withheld at 37%.1Internal Revenue Service. Publication 15 (2026), (Circular E), Employer’s Tax Guide – Section: 7. Supplemental Wages
The Aggregate Method
If the payout is bundled into your regular paycheck without being separated in the payroll system, the employer uses the aggregate method. The system treats the combined amount as a single paycheck, extrapolates it to an annual salary, and withholds based on that inflated figure and your W-4.1Internal Revenue Service. Publication 15 (2026), (Circular E), Employer’s Tax Guide – Section: 7. Supplemental Wages
This is where the sticker shock comes from. If you normally earn $3,000 per biweekly period and $7,000 in PTO gets tacked on, the system sees a $10,000 check and calculates as if you make roughly $260,000 a year. The withholding percentage on that period jumps hard. The annualized income is fictional, and the over-withholding sorts itself out when you file. In the moment, though, it can look like a third or more of the payout disappeared.
Social Security and Medicare on the Payout
FICA comes out at the same rates as any other paycheck: 6.2% Social Security and 1.45% Medicare.2Internal Revenue Service. Topic No. 751, Social Security and Medicare Withholding Rates Two thresholds are worth knowing:
- Social Security tax applies only to wages up to $184,500 in 2026. If your regular wages already passed that cap before the payout, no additional Social Security tax is withheld from the payout. Medicare has no cap.3Social Security Administration. Contribution and Benefit Base
- An additional 0.9% Medicare tax kicks in once your total wages for the year cross $200,000, regardless of filing status. If the payout is what pushes you past $200,000, the higher rate applies to the portion above that line.2Internal Revenue Service. Topic No. 751, Social Security and Medicare Withholding Rates
Ways to Reduce Over-Withholding
If you know a payout is coming, you have some options. None change what you actually owe, but each can keep more cash in your pocket now instead of tying it up until refund season.
Ask your employer whether the payout can be issued as a separate check with the amounts identified separately in payroll. That makes the flat 22% method available, which usually beats the aggregate method for employees earning under about $100,000. Payroll teams aren’t required to accommodate the request, but many will if the system can handle it.
You can also file an updated Form W-4. Step 4(b) lets you increase your claimed deductions, which reduces withholding on future paychecks.4Internal Revenue Service. Form W-4 (2026) Employee’s Withholding Certificate If a PTO payout already over-withheld and you’re starting a new job, adjusting Step 4(b) there can recoup the difference across the year rather than waiting for a refund. The IRS Tax Withholding Estimator at irs.gov helps size the adjustment.
A third option, if your employer allows it, is routing part of the payout into a 401(k) at termination. The IRS has 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 total deferrals stay within 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, and anything already contributed during the year counts against it.6Internal Revenue Service. 401(k) Limit Increases to $24,500 for 2026; IRA Limit Increases to $7,500 Money contributed this way isn’t taxed until you take distributions. Not every plan permits it, so check with HR before your last day.
State and Local Withholding
Every state that levies an income tax withholds on PTO payouts, but the mechanics differ. States generally take one of three approaches: a flat supplemental rate (ranging from under 2% to around 8%), following the federal method, or running the payout through their regular withholding tables based on your state W-4.
Local income taxes stack on top where they exist. In areas with combined state and local rates above 10%, total withholding on a PTO payout can push past 35% once federal income tax, FICA, and local taxes are added in.
If you work remotely, withholding is generally based on the state where you perform the work rather than where the company is headquartered. A handful of states apply a “convenience of the employer” test that can source wages to the office location instead, which sometimes creates double-withholding that has to be resolved when you file returns in both states.
Turning Down a Mid-Year Cash-Out Can Still Be Taxable
This one catches people off guard. If your employer offers a mid-year option to cash out unused PTO and you decline, you might 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 don’t take it.7Office of the Law Revision Counsel. 26 USC 451 – General Rule for Taxable Year of Inclusion
Say your employer announces in October that employees can cash out up to 40 hours. You decide to roll those hours into next year. The IRS can treat that cash as available to you now because you had an unrestricted right to take it, and your employer may need to report the value as taxable wages on this year’s W-2 even though you never received a payment.8GovInfo. 26 CFR 1.451-2 – Constructive Receipt of Income
The exception is when you make the cash-out-or-carry-over choice before the PTO accrues. Committing at the start of the year, before the hours are earned, generally keeps constructive receipt from applying.
How It All Reconciles at Tax Time
The payout gets folded into your annual Form W-2 along with the rest of your compensation. It shows up in Box 1 wages, in Box 3 Social Security wages up to the $184,500 cap, and in Box 5 Medicare wages.3Social Security Administration. Contribution and Benefit Base Federal income tax withheld on the payout is included in Box 2 with all other federal withholding, and state withholding is in Box 17. The W-2 doesn’t itemize the payout separately, so keep your final pay stub if you want to verify the numbers.
When you file your Form 1040, your actual tax is calculated on total income for the year. If the flat 22% or the aggregate method took more than you owe, the difference comes back as a refund. If your marginal bracket sits above 22% and your employer used the flat method, you may owe additional tax. The method your employer picked doesn’t change your final bill. It only affects when you and the IRS settle up.