The Smartest Bonus Tax Calculator Online
Instantly estimate how much federal, state, and FICA tax will be withheld from your bonus paycheck — using the flat rate or aggregate method.
Bonus Tax Calculator
Enter your details below to get an instant, accurate estimate of your bonus withholding and take-home pay.
Your Bonus Details
All fields help improve accuracy. State tax rate is optional.
Your Results
2026 EstimateHow Our Bonus Tax Calculator Works
Three simple steps to estimate your bonus paycheck withholding accurately.
Enter Your Pay Info
Input your annual base salary, bonus amount, filing status, and pay period. Adding your state's income tax rate improves accuracy further.
Choose Your Method
Select either the IRS flat supplemental rate (22%) or the aggregate method. Both are IRS-approved withholding approaches your employer may use.
See Your Net Bonus
Instantly get a full breakdown: federal tax, Social Security, Medicare, and state withholding — plus your after-tax take-home bonus amount.
2026 Bonus Tax Rates
Federal income tax brackets that apply when using the aggregate method, plus the flat supplemental bonus rate.
| Tax Rate | Taxable Income (Single) | Tax Owed on Bracket |
|---|---|---|
| 10% | $0 – $11,600 | 10% of taxable income |
| 12% | $11,601 – $47,150 | $1,160 + 12% over $11,600 |
| 22% | $47,151 – $100,525 | $5,426 + 22% over $47,150 |
| 24% | $100,526 – $191,950 | $17,168.50 + 24% over $100,525 |
| 32% | $191,951 – $243,725 | $39,110.50 + 32% over $191,950 |
| 35% | $243,726 – $609,350 | $55,678.50 + 35% over $243,725 |
| 37% | Over $609,350 | $183,647.25 + 37% over $609,350 |
| Tax Rate | Taxable Income (Married Jointly) | Tax Owed on Bracket |
|---|---|---|
| 10% | $0 – $23,200 | 10% of taxable income |
| 12% | $23,201 – $94,300 | $2,320 + 12% over $23,200 |
| 22% | $94,301 – $201,050 | $10,852 + 22% over $94,300 |
| 24% | $201,051 – $383,900 | $34,337 + 24% over $201,050 |
| 32% | $383,901 – $487,450 | $78,221 + 32% over $383,900 |
| 35% | $487,451 – $731,200 | $111,357 + 35% over $487,450 |
| 37% | Over $731,200 | $196,669.50 + 37% over $731,200 |
| Tax Type | Rate | Applies To | Notes |
|---|---|---|---|
| Federal Flat Supplemental | 22% | Bonuses ≤ $1 million | IRS mandatory flat rate on supplemental wages |
| Federal Flat Supplemental | 37% | Bonuses > $1 million | Top bracket rate applies to excess |
| Social Security (Employee) | 6.2% | Wages up to $160,200 | OASDI wage base for 2026 |
| Medicare (Employee) | 1.45% | All wages | No income cap |
| Additional Medicare Surtax | 0.9% | Wages over $200,000 | Single filers; $250K for MFJ |
Two IRS-Approved Withholding Methods
Your employer chooses which method applies to your bonus paycheck. Understanding both helps you plan smarter.
Flat Supplemental Rate (22%)
The IRS allows employers to withhold a flat 22% federal income tax on supplemental wages — including bonuses — up to $1 million per year. This is the most common method and is simple to calculate. Bonuses exceeding $1 million are withheld at 37% on the excess amount.
- Simple, predictable calculation
- Easy to plan around
- Lower withholding if bracket > 22%
Pros
- May over-withhold for lower incomes
- Requires reconciliation at filing
- Doesn't reflect true marginal rate
Cons
Aggregate Method
Under the aggregate method, your employer combines your most recent regular paycheck with your bonus, calculates withholding on the total using your W-4 allowances, then subtracts what was already withheld from your regular check. The result is applied to your bonus paycheck.
- More accurate to actual liability
- Better for lower income earners
- Reflects your real marginal rate
Pros
- Can result in higher withholding
- More complex calculation
- Less predictable net amount
Cons
All-in-One Bonus & Paycheck Tools
Whether you need a bonus paycheck calculator, a salary plus bonus estimator, or a full payroll calculator with bonus — we have you covered.
After-Tax Bonus Calculator
Find out exactly how much of your bonus you'll actually keep after all federal, state, and FICA taxes are withheld. Our after-tax bonus calculator shows your true take-home amount instantly.
Bonus & Salary Calculator
Combine your regular salary and bonus for a complete picture. Our bonus and salary calculator shows how your total annual compensation affects your marginal tax bracket and overall withholding.
Bonus Payroll Calculator
Run payroll estimates that include bonus payments. Our bonus payroll calculator helps HR teams and self-employed individuals estimate total employer and employee tax obligations on supplemental wages.
Bonus Payment Tax Calculator
Wondering about taxes on a specific bonus payment? Enter the exact bonus amount and your income details to get a precise tax withholding estimate broken down by tax type and authority.
Taxable Bonus Calculator
All bonus income is considered taxable by the IRS as supplemental wages. Use our taxable bonus calculator to understand which portion of your compensation is subject to each type of tax.
Paycheck & Bonus Calculator
See your full paycheck including both regular and bonus pay. Calculate net take-home, effective tax rate, and year-to-date withholding to compare bonus payment scenarios side by side.
Strategies to Reduce Tax on Your Bonus
These legal strategies can help you keep more of your bonus — always verify with a qualified tax advisor.
Pre-tax retirement contributions directly reduce your taxable income. Ask your employer if you can direct a larger percentage of your bonus check into your 401(k) up to the annual IRS limit ($23,000 for 2026, $30,500 if age 50+).
Health Savings Account (HSA) and Flexible Spending Account (FSA) contributions are pre-tax and lower your adjusted gross income, which may reduce the marginal rate applied to your bonus under the aggregate method.
If you're close to a bracket threshold, ask whether your employer can issue the bonus in January of the next year instead of December. This shifts the income to the next tax year, potentially at a lower marginal rate.
If you have investments with unrealized losses, consider selling them in the same tax year your bonus is paid. Up to $3,000 in net capital losses can offset ordinary income, including bonus income, each year.
Itemizing deductions that include charitable donations in the same year as a large bonus can help offset taxable income. A Donor-Advised Fund (DAF) lets you front-load multiple years of giving in one high-income year.
If the flat 22% withholding on your bonus will leave you over-withheld for the year, you can adjust your regular paycheck W-4 allowances to reduce withholding and avoid giving the IRS an interest-free loan.
Bonus Tax Questions Answered
Everything you need to know about bonus taxation, withholding methods, and paycheck calculations.
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