Severance pay is not actually taxed at a higher rate than your regular wages. It is withheld at a higher rate. The IRS classifies severance as “supplemental wages,” which triggers a flat 22% federal withholding, and once Social Security, Medicare, and state tax stack on top, roughly 30% or more of the check can disappear before it reaches your account.1Internal Revenue Service. Publication 15 (2026), (Circular E), Employer’s Tax Guide Your real tax bill is calculated when you file your return, and workers who are unemployed for part of the year often get a chunk of that withholding back as a refund.
Severance Is Classified as Supplemental Wages
IRS Publication 15 groups severance with bonuses, commissions, back pay, and accumulated sick leave under a single label: supplemental wages.1Internal Revenue Service. Publication 15 (2026), (Circular E), Employer’s Tax Guide These are payments that fall outside your normal recurring paycheck. Because they are irregular, payroll systems cannot slot them into the withholding tables built for steady biweekly or monthly income. The IRS instead requires employers to use separate withholding rules, and those rules tend to collect more tax up front. That classification is the entire reason a severance check looks so different from a regular pay stub. It is not a penalty for losing your job.
The 22% Flat Rate
Most employers withhold a flat 22% in federal income tax on severance under $1 million because it is the simplest option the IRS allows.1Internal Revenue Service. Publication 15 (2026), (Circular E), Employer’s Tax Guide The rate is applied regardless of what you claimed on your Form W-4 and regardless of the bracket your regular income actually sits in. On a $30,000 severance package, that alone pulls $6,600 for federal income tax before any other deduction touches the check.
If your cumulative supplemental wages from one employer exceed $1 million in a calendar year, the portion above $1 million is withheld at 37%, the top individual income tax rate.1Internal Revenue Service. Publication 15 (2026), (Circular E), Employer’s Tax Guide Few workers hit that tier, but the 22% floor stings anyone whose effective tax rate on regular wages runs well below 22%.
When an Employer Can Use the Flat Rate
The 22% option is only available when two conditions are met: the severance is paid separately from regular wages or clearly identified as a separate line item on payroll records, and the employer has already withheld income tax from your regular wages at some point during the current or prior calendar year.2eCFR. 26 CFR 31.3402(g)-1 – Supplemental Wage Payments If either condition is missing, the employer must use the aggregate method instead.
The Aggregate Method Can Withhold Even More
Under the aggregate method, payroll software adds the severance to the wages from your most recent pay period and calculates withholding as if you earned that combined amount every pay cycle for the whole year. If you normally earn $2,000 per period and receive a $10,000 severance on the same check, the system assumes you make the equivalent of about $312,000 annually and withholds at that pace.2eCFR. 26 CFR 31.3402(g)-1 – Supplemental Wage Payments
That mathematical fiction pushes withholding into a much higher bracket than your real income justifies. Some workers see 30% to 35% or more withheld for federal tax alone under this approach, higher than the flat 22% rate would produce. The system has no way of knowing you will not receive another paycheck for months, so it captures the maximum possible tax up front. The overpayment usually comes back at tax time.
Social Security and Medicare Come Out Too
Federal income tax is only part of what leaves the check. Your employer also deducts 6.2% for Social Security and 1.45% for Medicare from the gross severance amount.3Internal Revenue Service. Topic No. 751, Social Security and Medicare Withholding Rates Combined with the 22% federal flat rate, these push total withholding to roughly 30% before any state tax.
The Social Security portion has a ceiling. For 2026, the 6.2% tax applies only to the first $184,500 of combined wages and supplemental pay you earn during the year.4Social Security Administration. Contribution and Benefit Base If your regular salary already brought you close to or above that threshold, some or all of your severance can escape the Social Security deduction. Medicare has no wage cap, so the 1.45% applies to every dollar.
A large severance can also trigger the 0.9% Additional Medicare Tax. Employers must start withholding this surtax once your wages exceed $200,000 for the year, regardless of your filing status; the final liability threshold is $200,000 for single filers, $250,000 for joint filers, and $125,000 for married filing separately, and any difference is reconciled on your return.5Internal Revenue Service. Topic No. 560, Additional Medicare Tax
State Withholding Stacks on Top
Most states with an income tax also require withholding on supplemental wages. Some set a flat supplemental rate. Others require employers to use the state’s standard progressive withholding tables. Flat state supplemental rates generally run from roughly 1.5% to over 11%, depending on the state. A handful of states have no income tax, so no state withholding applies at all. Check your state’s tax agency for the exact rate, because this deduction sits on top of everything above.
Withholding Is Not Your Final Tax Bill
Withholding is an estimate collected in advance. Your actual tax is calculated on your Form 1040 based on your total income for the calendar year.6Internal Revenue Service. About Form 1040, U.S. Individual Income Tax Return The severance does raise your adjusted gross income, and the top portion of your earnings can shift into a higher bracket. But only the dollars that land in that higher bracket get the higher rate. The rest of your income stays where it was.
If you remain unemployed for the rest of the year, your total income may fall well short of what the withholding formulas assumed. The heavy upfront collection then comes back to you as a refund when you file. The IRS is not keeping extra money. It is collecting an estimate and settling up later.
One knock-on effect worth naming: a severance-fueled income spike can reduce or eliminate credits tied to income limits, such as the Child Tax Credit, which begins to phase out above $200,000 for single filers and $400,000 for joint filers.7Internal Revenue Service. Child Tax Credit It can also activate the 3.8% Net Investment Income Tax on any investment income you have, once modified adjusted gross income exceeds $200,000 (single) or $250,000 (joint).8Internal Revenue Service. Topic No. 559, Net Investment Income Tax Severance itself is not subject to that surtax, but by lifting your overall income it can pull investment earnings into it.
Ways to Soften the Hit
You cannot avoid income tax on severance, but a few moves can reduce what you owe when you file.
Ask for Installment Payments
If a severance offer arrives late in the year, ask whether the employer will split payments across two calendar years. Half in December and half in January spreads the income across two returns and can keep each year’s total in a lower bracket. Not every employer will agree, but it costs nothing to raise during negotiations.
Maximize Retirement Contributions
Traditional 401(k) and traditional IRA contributions reduce your taxable income for the year. For 2026, you can defer up to $24,500 into a 401(k) if you are under 50, or $32,500 if you are 50 or older. Between ages 60 and 63, the limit rises to $35,750.9Internal Revenue Service. 401(k) Limit Increases to $24,500 for 2026, IRA Limit Increases to $7,500 You generally need to be employed, or have the severance run through the employer’s payroll, to make 401(k) contributions, so act before your final paycheck is processed if you can. Traditional IRA contributions are open to anyone with earned income, capped at $7,500 in 2026 or $8,600 at age 50 and up.10Internal Revenue Service. Retirement Topics – IRA Contribution Limits
Fund a Health Savings Account
If you are enrolled in a high-deductible health plan, HSA contributions lower your adjusted gross income. For 2026, the limit is $4,400 for self-only coverage or $8,750 for family coverage.11Internal Revenue Service. Expanded Availability of Health Savings Accounts Under the One, Big, Beautiful Bill Act HSA contributions made through payroll are deductible for both income tax and FICA, which makes them especially efficient.
Adjust Withholding on Any Remaining Paychecks
If you are still receiving regular paychecks before your termination date, submitting a new Form W-4 can reduce withholding on those final checks. That does not change the supplemental-wage withholding on the severance itself, but it can offset some of the over-collection by trimming what comes out of your regular pay. You can also adjust withholding at a new job later in the year if you know you have already over-withheld.