What percentage of my bonus is taken for taxes?

Federal withholding on bonuses is typically 22% under the supplemental wage flat rate method (for bonuses under $1 million). Add 7.65% for FICA (Social Security and Medicare), and if you have not yet hit the $176,100 Social Security wage base, and state income tax on top of that. Total withholding typically ranges from 30% to 45% depending on your state.

Will I owe more taxes because of my bonus?

Bonuses are ordinary income, so they are added to your total taxable income for the year. If the withholding on your bonus was insufficient for your actual marginal rate, you may owe additional taxes at filing. If your employer withheld at 22% but your actual marginal rate is 24% or 32%, you will owe the difference when you file.

Is my entire bonus taxed at my highest rate?

No — the US tax system is marginal. Only the portion of your income that falls within a higher bracket is taxed at that rate. The bonus itself does not change what you owe on prior income. However, the bonus may push some of your income into a higher bracket, which means that portion is taxed at the higher rate.

Can I reduce taxes on my bonus?

Yes, partially. Contributing bonus income to a pre-tax 401(k) (if you have contribution room) reduces taxable income. If you contribute $5,000 of a $15,000 bonus to a traditional 401(k), you are only taxed on the $10,000 remainder. You cannot avoid FICA taxes through 401(k) contributions. Some employees ask employers to defer bonus payment to the following year if they expect lower income then.

What is the difference between how my bonus is withheld and how it is actually taxed?

Withholding is an estimate. Your employer withholds using the supplemental flat rate (22%) or the aggregate method, but your actual tax liability is calculated on your full-year income when you file. If you are withheld less than you owe, you will owe at filing. If you are withheld more, you get a refund.

How Much of My Bonus Goes to Taxes?

The Short Answer

A common confusion about bonuses: the amount withheld from your paycheck is not necessarily what you actually owe. Withholding is an advance payment toward your final tax bill, not the final bill itself.

That said, here is the realistic picture of what comes out:

Bonus Size	Fed Withholding (22%)	FICA (~7.65%)	State (est. 5%)	Net Approx.
$1,000	$220	$77	$50	~$653
$5,000	$1,100	$383	$250	~$3,267
$10,000	$2,200	$765	$500	~$6,535
$15,000	$3,300	$1,148	$750	~$9,802
$25,000	$5,500	$1,913	$1,250	~$16,338
$50,000	$11,000	$3,825	$2,500	~$32,675

FICA note: Social Security (6.2%) only applies to wages up to $176,100 in 2026. If your base salary already exceeds this, the Social Security portion of FICA does not apply to the bonus.

State tax note: Rates vary widely. No income tax states (Florida, Texas, Washington, etc.) pay nothing; California and New York add 9–13%.

How Bonuses Are Withheld

The Supplemental Flat Rate Method (Most Common)

The IRS allows employers to withhold federal income tax on supplemental wages — including bonuses — at a flat 22% rate, regardless of your normal withholding bracket. This is simpler for employers and is what most companies use for bonuses below $1 million.

What it means: If your effective federal tax rate is actually lower than 22% (common for lower-income earners), you may get a small refund when you file. If your marginal rate is higher than 22% (common for higher earners), you may owe additional taxes when you file.

The Aggregate Method

Some employers add the bonus to your regular paycheck and withhold based on the combined amount. This can result in higher withholding if the combined amount puts you into a higher withholding bracket.

What You Actually Owe

Your bonus is ordinary income. When you file your annual tax return, it is added to your salary, investment income, and other income, and your actual tax liability is calculated on the total.

Example:

Salary: $90,000
Bonus: $15,000
Total income: $105,000
2026 standard deduction (single): $15,000
Taxable income: $90,000

Federal tax on $90,000 taxable income (2026 brackets, single):

10% on first $11,925 = $1,193
12% on $11,925–$48,475 = $4,386
22% on $48,475–$90,000 = $9,136
Total federal tax: ~$14,714

If your employer withheld $3,300 on the bonus (22% of $15,000) plus normal paycheck withholding, the math may result in a small refund or a small balance due — depending on accuracy of your W-4.

Reducing Your Tax Liability on a Bonus

Maximize Pre-Tax 401(k) Contributions

If you have not hit the 2026 contribution limit ($23,500, or $31,000 if age 50+), you can direct some or all of a bonus into pre-tax 401(k) contributions. Every dollar contributed reduces your federal and state taxable income.

Example: Directing $5,000 of a $15,000 bonus to a traditional 401(k) reduces your taxable income by $5,000, saving approximately $1,100 in federal taxes if you are in the 22% bracket.

Note: FICA taxes are calculated before 401(k) deductions for employees, so you cannot avoid Social Security and Medicare taxes this way.

HSA Contributions

If you have a high-deductible health plan, contributing to an HSA (up to $4,300 individual / $8,550 family in 2026) through payroll is pre-tax. This reduces your taxable income further.

Timing (Defer If Possible)

In some cases, you can ask HR to defer a year-end bonus to the following January, effectively moving the income to the next tax year. This makes sense if:

You expect lower income next year
You are close to a bracket threshold that a bonus would push you over
You are approaching RMD-related income thresholds

Not all employers accommodate this.

The Net Payout Reality

After federal, FICA, and state withholding, most employees in mid- to high-cost states net 55–65 cents on the dollar from their bonus. The tax is real, but so is the net amount — a $10,000 bonus yields $6,500–$7,000 in most situations, not $3,000.