Is my bonus taxed at a higher rate than my salary?

The withholding rate is often higher than your salary withholding might suggest, but your bonus is not taxed at a categorically different rate on your return. Bonuses are added to your total annual income and taxed at your ordinary marginal rate when you file. The 22% flat supplemental withholding may over-withhold (resulting in a refund) or under-withhold (resulting in tax owed) depending on your actual bracket.

How can I reduce tax on my bonus?

Three main strategies: (1) Direct a portion to a traditional 401(k) contribution -- it reduces both federal and state taxable income immediately. (2) If your employer allows, request the bonus to be paid in a different tax year when your total income may be lower. (3) Contribute to an HSA if you have a qualifying high-deductible health plan. You cannot avoid FICA on bonuses through any of these methods.

What is the aggregate withholding method?

Some employers use the aggregate method instead of the flat 22% rate. In this method, the bonus is added to the employee's regular wages, and withholding is calculated on the total as if it were all regular income. This can result in higher or lower withholding than the flat rate depending on the employee's W-4 elections and regular pay rate.

Tax & PayrollPopular

Salary After Bonus Calculator

Calculate your net take-home bonus after federal supplemental tax (22%), state tax, and FICA withholding. Compare flat amount versus percentage-based bonuses.

Salary and Bonus

Annual Base Salary ($)

Bonus Amount

Bonus Amount ($)

Tax Rates

Federal Rate (%)

IRS supplemental: 22% (or 37% over $1M)

State Rate (%)

401(k) Contribution on Bonus (%)

Optional. Pre-tax contribution reduces taxable bonus.

Bonus Breakdown

Enter salary and bonus details, then click calculate.

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Introduction

A $15,000 annual bonus sounds like a significant windfall. After the IRS takes 22% in federal supplemental withholding, 6.2% for Social Security, 1.45% for Medicare, and your state takes another 5%, you are looking at about $9,800 in take-home -- a 35% reduction from the gross amount. The surprise is not the math; it is that many employees do not run these numbers before making financial plans around their bonus. The IRS treats bonuses as supplemental wages, subject to a flat 22% federal withholding rate (or 37% on the portion exceeding $1 million in a calendar year) when paid separately from regular salary. This differs from your marginal rate, which means the withholding may over- or under-estimate your actual tax liability -- reconciled when you file your annual return. This calculator shows the net bonus after all deductions, including optional 401(k) contributions that can reduce the taxable amount.

What This Calculator Does

This salary after bonus calculator estimates the net take-home from a bonus payment after federal supplemental withholding (22% flat rate or 37% above $1 million), state income tax, Social Security, Medicare, and any optional pre-tax contributions you choose to direct. It shows gross bonus, each deduction category, total tax withheld, effective rate on the bonus, and net bonus amount. Also calculates your new combined annual gross (base salary + bonus) for context.

The Formula

Net Bonus = Gross Bonus - Federal Supplemental Tax (22% or 37%) - State Tax - Social Security (6.2%) - Medicare (1.45%) - Optional 401(k) Contribution

The IRS flat rate method for supplemental wages applies 22% federal withholding to bonuses paid separately from regular wages (for amounts up to $1 million per year). FICA applies regardless of the base salary earned -- Social Security at 6.2% up to the $184,500 2026 wage base and Medicare at 1.45% on all wages. If combined wages for the year already exceed the $184,500 SS wage base when the bonus is paid, no additional Social Security is withheld on the bonus. An optional pre-tax 401(k) contribution from the bonus reduces both the federal income tax withholding and, in some cases, state income tax.

Step-by-Step Example

Enter bonus and base salary

Base salary: $90,000 (already paid through the year). Bonus: $14,000. Year-to-date SS wages before bonus: $90,000 (below $184,500 cap, so full SS applies to bonus).

Calculate federal withholding

Federal supplemental rate: 22%. Federal tax: $14,000 x 22% = $3,080.

Calculate FICA taxes

Social Security: $14,000 x 6.2% = $868. Medicare: $14,000 x 1.45% = $203. Total FICA: $1,071.

Add state tax and compute net

State tax (5%): $14,000 x 5% = $700. Total deductions: $3,080 + $1,071 + $700 = $4,851. Net bonus: $14,000 - $4,851 = $9,149. Effective withholding rate: 34.6%.

Real-World Use Cases

Year-End Performance Bonus Planning

A sales manager expecting a $22,000 year-end bonus runs this calculator to plan. Net after federal (22%), FICA (7.65%), and state (6%) withholding: $13,640. She plans to direct $4,000 to her 401(k) (staying under the $23,500 annual limit), saving an additional $880 in federal tax and $440 in state tax, bringing the 401(k) contribution net cost to $2,680 rather than $4,000.

Signing Bonus Negotiation

A candidate negotiating a $20,000 signing bonus runs the calculator to understand the net amount. At 22% federal + 7.65% FICA + 5.75% state: net bonus is approximately $12,620. The employer pays the gross, not the net -- useful to know when negotiating whether to ask for a higher gross to achieve a target net.

High Earner Over the SS Wage Base

An executive with $200,000 in base salary receives a $50,000 Q4 bonus. Since base salary already exceeded the $184,500 SS wage base, no Social Security is withheld on the bonus. Deductions: $50,000 x 22% federal + $50,000 x 1.45% Medicare + $50,000 x 9% state = $16,325. Net bonus: $33,675 -- noticeably more than a lower-income earner's bonus at the same gross.

Comparison

Gross Bonus	Federal (22%)	FICA (7.65%)	State (5%)	Net Bonus	Effective Rate
$5,000	$1,100	$383	$250	$3,268	34.6%
$10,000	$2,200	$765	$500	$6,535	34.6%
$15,000	$3,300	$1,148	$750	$9,803	34.6%
$25,000	$5,500	$1,913	$1,250	$16,338	34.6%
$50,000	$11,000	$3,825	$2,500	$32,675	34.6%
$100,000 (below $1M)	$22,000	$7,650	$5,000	$65,350	34.6%
$1,100,000 (over $1M)	$407,000*	$16,200	$55,000	$621,800	43.5%*

Common Mistakes to Avoid

Thinking the 22% bonus withholding is your final tax rate. It is only a withholding estimate. If your total annual income puts you in the 12% bracket, you will likely get a refund. If you are in the 37% bracket, you may owe additional tax at filing time beyond the 22% withheld.
Forgetting that Social Security is withheld on bonuses up to the annual wage base. Many employees assume FICA only applies to regular salary. Bonuses are subject to the same FICA rates as regular wages, though SS stops if combined wages for the year already exceed $184,500.
Missing the opportunity to contribute bonus to a pre-tax 401(k). A $10,000 bonus directed to a traditional 401(k) saves $2,200 in federal withholding plus any state tax on that amount. The net cost is $6,000 to $7,000 -- not $10,000 -- while adding the full $10,000 to retirement.
Not checking the $1 million threshold. Bonuses exceeding $1 million paid in a single tax year are subject to 37% withholding on the excess above $1 million, not 22%. This applies to the bonus amount, not total annual income.

Frequently Asked Questions

Accuracy and Disclaimer

Tax withholding on bonuses depends on your employer's chosen withholding method (flat rate vs. aggregate), your specific tax situation, W-4 elections, year-to-date wages relative to the FICA wage bases, and state income tax rules. This calculator uses the IRS flat supplemental rate method. Actual tax liability is determined on your annual Form 1040 and may differ from the withholding shown. Consult a licensed CPA for personalized bonus tax planning.

Conclusion

The key insight from bonus tax planning is that the 22% flat withholding rate may differ from your actual marginal tax rate. If your combined income puts you in the 12% or 24% bracket, you may get some withholding back at filing time -- or owe additional if you are in the 32% or 37% bracket. Running your total annual income through the Take-Home Pay Calculator gives you the full picture. If you are considering contributing a portion of your bonus to a pre-tax 401(k) to reduce taxable income, the 401(k) Contribution Limit Optimizer shows how much room remains under the annual contribution cap.