How Are Bonuses Taxed in 2026? Flat Rate vs Aggregate Method

You earned a bonus. Now you're looking at the check and wondering why the government took what seems like an outsize chunk. Here's exactly how bonus taxation works in 2026 and what you can do about it.

The Short Answer: Bonuses Are "Supplemental Wages"

The IRS classifies bonuses as supplemental wages — income paid in addition to your regular salary. This matters because the IRS allows two methods for withholding federal income tax on supplemental wages, and employers choose which one to use.

Method 1: The Flat Rate (Percentage Method)

If your bonus is paid separately from your regular paycheck, your employer can withhold at a flat supplemental rate of 22% for bonuses up to $1 million. For bonuses over $1 million, the rate is 37% on the excess.

Example: You receive a $5,000 bonus separately from your paycheck.
Federal withholding = $5,000 × 22% = $1,100
Plus Social Security (6.2%) = $310
Plus Medicare (1.45%) = $72.50
Total withheld = approximately $1,482.50
Net check = $3,517.50

This method is simple, predictable, and most common for separately issued bonus checks.

Method 2: The Aggregate Method

If your employer pays your bonus combined with your regular paycheck, or chooses this method, they add your bonus to your regular wages for that pay period and withhold at your standard rate.

Example: Regular biweekly check $3,000 + $5,000 bonus = $8,000 combined.
Your employer annualizes $8,000 × 26 periods = $208,000
They calculate tax as if you earn $208,000/year (likely in a higher bracket)
Withhold at that rate, then subtract what they already withheld on regular wages

The aggregate method often results in higher withholding than the flat 22% method, because adding a bonus to one paycheck makes that period look like high income on an annualized basis. This can be a shock when your bonus and regular pay appear in the same check.

The Big Myth: "Bonuses Are Taxed at a Higher Rate"

Bonuses are NOT inherently taxed at a higher rate than other income. The confusion comes from withholding — your employer withholds at 22% (or more with the aggregate method), but your actual tax on that money is determined by your marginal bracket when you file your return.

If your marginal federal rate is 12%, and your employer withheld 22% on your bonus, you'll get a refund for the difference at tax time. The 22% is just withholding — it's a deposit toward your actual tax bill, not your final tax rate.

State Tax on Bonuses

States handle bonus taxation differently:

• Most states treat bonuses as regular income and withhold at your standard state rate
• Some states have their own supplemental withholding rates
• No-income-tax states (Texas, Florida, etc.) don't withhold state tax on bonuses

FICA on Bonuses

Social Security (6.2%) and Medicare (1.45%) are withheld on bonuses just like regular wages — no special rate or exemption. The Social Security cap ($176,100 in 2026) still applies: if you've already hit the wage base with regular pay, your bonus is not subject to Social Security tax. Medicare has no cap.

How to Reduce Bonus Tax Withholding

You can't change your actual tax liability, but you can reduce the withholding shock:

• Ask your employer which method they use. If they use the aggregate method, you'll have more withheld. The flat 22% method may result in less withheld (useful for cash flow, not the actual tax owed).
• Increase your 401(k) contribution before the bonus. If you can direct a chunk of your bonus to a pre-tax 401(k), that contribution reduces the taxable portion.
• Adjust your W-4. You can increase allowances temporarily before a bonus and reduce them after, though this requires planning.

When You'll Get a Refund

If 22% was withheld on your bonus and your effective federal tax rate is lower than 22%, you'll receive a refund when you file. For someone earning $55,000 total (including a bonus), the effective federal rate is roughly 9–11% — well below the 22% supplemental rate. That gap comes back as a refund.

Use our take-home pay calculator to model what your annual effective rate looks like with your bonus added to regular income, so you know what to expect at tax time.

Signing Bonuses: Same Rules

Signing bonuses follow the same supplemental wage rules. If you're negotiating a new job offer with a signing bonus, expect 22% federal withholding plus FICA. A $10,000 signing bonus results in approximately $7,250–$7,500 net depending on state taxes. Plan accordingly when using it to bridge employment gaps or cover relocation costs.