Bonus Tax Calculator 2026

A bonus tax calculator is a federal withholding estimator for supplemental wages in the United States that calculates how much tax an employee pays on a cash bonus. U.S. bonus payments are treated as supplemental wages under rules from the Internal Revenue Service and are commonly withheld using the 22% federal percentage method, while large bonuses above $1 million can face 37% federal withholding. 

Employers may also apply the aggregate method, which combines the bonus with regular payroll income and calculates withholding using standard income-tax brackets. Accurate bonus tax calculation depends on total annual income, filing status, and payroll treatment. This calculator estimates federal bonus withholding for any amount, demonstrates the percentage and aggregate methods with examples, and shows the take-home pay from scenarios such as a $10,000 employee bonus.

Are Bonuses Taxed Differently Than Regular Income?

Bonuses are taxed as ordinary income, the same federal tax rates of 10%–37% that apply to wages. The difference is in withholding, not the final tax. Employers withhold bonus tax using one of 2 IRS-approved methods: the 22% flat percentage method or the aggregate method. The flat method withholds a uniform 22% federal income tax on any bonus up to $1,000,000 regardless of the employee’s actual bracket.

The IRS classifies bonuses as supplemental wages, compensation paid in addition to regular wages such as commissions, overtime, severance, back pay, awards, and prizes from an employer. Supplemental wages follow different withholding rules than regular wages, but they are included in ordinary taxable income on the employee’s Form W-2 in Box 1.

Key distinction: withholding and final tax are not the same. An employer withholds 22% from a bonus under the flat method, but the actual tax owed is determined by the employee’s marginal federal bracket on the annual return. A taxpayer in the 12% bracket who had 22% withheld receives a refund of the 10-percentage-point difference when filing. A taxpayer in the 32% bracket who had only 22% withheld owes the 10-percentage-point difference at filing.

Supplemental Wage Withholding Rates – 2026

Are Bonuses Taxed at 40%?

Bonuses are not taxed at 40% under any standard federal withholding scenario. The maximum federal supplemental wage withholding rate is 37%, which applies only to supplemental wages exceeding $1,000,000 paid to one employee in a single calendar year. For bonuses under $1,000,000, federal withholding under the flat method is 22%. The 40% figure may arise when federal (22%) plus FICA (7.65%) plus state tax are combined.

The 40% impression comes from adding up all withholding components on a single bonus paycheck. For an employee in a state with a 6% supplemental wage rate, the combined withholding on a bonus would be approximately: 22% (federal) + 7.65% (FICA) + 6% (state) = 35.65%. In a high-tax state like California (10.23% state supplemental rate), the combined withholding reaches approximately 22% + 7.65% + 10.23% = 39.88%, close to but not 40%.

What Actually Gets Withheld From a Bonus – All Components

Combined withholding examples: California employee receiving a $20,000 bonus: 22% federal + 6.2% SS + 1.45% Medicare + 10.23% CA state = 39.88% combined withholding, $7,976 withheld, $12,024 net. Texas employee receiving the same $20,000 bonus: 22% federal + 6.2% SS + 1.45% Medicare + 0% state = 29.65% combined — $5,930 withheld, $14,070 net.

Are Bonuses Taxed at 37%?

Bonuses are withheld at 37% only when supplemental wages paid to one employee exceed $1,000,000 in a single calendar year. Below $1,000,000 in supplemental wages, the mandatory federal flat withholding rate is 22%, not 37%. The 37% figure is the top federal income tax bracket rate, which applies to ordinary taxable income above $626,350 (single) or $751,600 (MFJ) for Tax Year 2025.

A high-income executive who receives a $500,000 bonus is withheld at 22% (flat rate), not 37%, because $500,000 is below the $1,000,000 threshold. At filing, if the executive’s total taxable income places the bonus dollars in the 37% bracket, the executive owes the 15-percentage-point difference between the 22% withholding and the 37% actual rate.

A different executive who receives a $1,500,000 bonus in a year when total supplemental wages paid by that employer exceed $1,000,000 has the first $1,000,000 withheld at 22% and the remaining $500,000 withheld at 37%.

Federal Tax on Bonuses – Withholding vs. Actual Tax Owed

How Do I Calculate Tax on My Bonus?

Bonus tax is calculated using one of 2 IRS-approved methods: the percentage method (flat 22% federal withholding on the bonus, calculated separately from regular wages) or the aggregate method (bonus combined with the most recent regular paycheck, then withholding calculated on the total using standard payroll tables). Employers choose the method, employees cannot override it.

Method 1: The Percentage Method (Flat 22% Rate)

The percentage method withholds federal income tax at a flat 22% rate on the entire bonus amount, completely separate from the employee’s regular wages for that pay period. The IRS allows this method for all supplemental wages up to $1,000,000. Most payroll providers use this method because it is simple and produces predictable results.

Federal Withholding (Flat Method) = Bonus Amount × 22%

Social Security = Bonus Amount × 6.2% (if YTD wages < $176,100)

Medicare = Bonus Amount × 1.45%

Net Bonus = Bonus Amount − Federal Tax − SS − Medicare − State Tax

Worked example: $10,000 bonus, single employee, Texas resident, YTD wages $55,000 (Social Security not yet capped):

Method 2: The Aggregate Method

The aggregate method combines the bonus with the employee’s most recent regular paycheck and calculates withholding on the combined amount using the standard IRS withholding tables. The employer then subtracts the regular withholding that would apply to the regular wages alone, leaving the incremental withholding attributable to the bonus.

Aggregate method example: employee earns $4,000 biweekly ($104,000 annual), receives a $10,000 bonus, files single:

• Step 1: Regular biweekly wages: $4,000. Standard biweekly withholding (single, 0 allowances): approximately $468.
• Step 2: Combined wages for withholding: $4,000 + $10,000 = $14,000.
• Step 3: Withholding on $14,000 biweekly (annualizes to $364,000): approximately $3,157 using IRS tables.
• Step 4: Bonus withholding = $3,157 − $468 = $2,689 in federal income tax on the $10,000 bonus.
• Step 5: Effective federal rate under aggregate method: $2,689 ÷ $10,000 = 26.89%.

Aggregate vs. flat comparison on this $10,000 bonus: Flat method withholds $2,200 (22%). Aggregate method withholds $2,689 (26.89%). The aggregate method withholds $489 more because the employee’s regular wages already place them solidly in the 22% bracket, and the bonus pushes some income into the 24% bracket.

How Much Will My $10,000 Bonus Be Taxed?

A $10,000 bonus withheld under the flat 22% method results in $2,200 in federal income tax withholding plus $620 in Social Security and $145 in Medicare, total FICA of $765. Combined federal withholding is $2,965, leaving a net bonus of $7,035 for employees in states with no income tax. In high-tax states, net take-home ranges from $5,960 (California) to $7,035 (no-income-tax states).

$10,000 Bonus Take-Home by State – Flat 22% Method, Single, YTD Wages < $176,100

FICA = Social Security (6.2%) + Medicare (1.45%) = 7.65%. Assumes YTD wages below $176,100 (Social Security wage base). State rates shown are the applicable supplemental or flat withholding rates for 2025. Local taxes (NYC, Philadelphia, etc.) not included. Net take-home is the bonus check received before any post-tax deductions.

Bonus Net Take-Home at Multiple Bonus Amounts – No-Tax State vs. California

*$100,000 bonus: if YTD wages already exceed $176,100, Social Security ($6.2%) does not apply — only Medicare (1.45%). FICA calculation for $100K bonus assumes $55,000 in prior YTD wages (SS still applies for $100K); the actual SS cap is $176,100 − YTD wages. Recalculate if YTD wages differ.

Do You Pay FICA Taxes on a Bonus?

FICA taxes, Social Security (6.2%) and Medicare (1.45%), apply to bonus payments in full, subject to the same rules as regular wages. Social Security tax applies only up to the annual wage base ($176,100 for 2025). Once the employee’s year-to-date wages reach $176,100, no further Social Security is withheld, including on bonuses paid after that point. Medicare has no cap and applies to every dollar of bonus.

The Social Security wage base timing creates a significant take-home difference for high earners who receive year-end bonuses. An executive with $200,000 in salary paid evenly throughout the year passes the $176,100 SS wage base in approximately September. 

A $50,000 bonus paid in December generates no Social Security withholding ($0), because the wage base was already exceeded, and only $725 in Medicare (1.45%), compared to $3,115 in FICA that the same $50,000 bonus would generate if paid in January before any wages were earned.

FICA Calculation on Bonus – YTD Wage Base Scenarios

Social Security wage base for 2025: $176,100. Medicare has no wage base cap. Additional Medicare Tax of 0.9% applies to wages above $200,000 in a calendar year — the employer withholds this once the employee’s YTD wages from that employer exceed $200,000.

State Bonus and Supplemental Wage Tax Rates – 2026

State bonus withholding rates vary from 0% (no income tax states) to 13.3% (California’s top supplemental rate). 9 states have no income tax and no bonus withholding. Among income-tax states, some impose a flat supplemental rate on bonuses, others use the regular income tax brackets applied to the annualized bonus amount, and a few require employers to use the aggregate method.

State supplemental rates are employer withholding rates, they are not necessarily the final state tax rate on the bonus. Employees reconcile withholding with the actual state tax owed on the annual state return. Local taxes (NYC, Philadelphia, Louisville, etc.) are additional. Rates reflect 2025 state tax laws.

Flat Rate Method vs. Aggregate Method: Which Produces Lower Withholding?

The flat 22% method produces lower federal withholding than the aggregate method for employees in tax brackets above 22%, typically those earning above $47,150 (single) or $94,300 (MFJ) in taxable income. For employees in the 10% or 12% bracket, the aggregate method produces lower withholding since their marginal rate is below 22%. Employers choose the method, employees should understand which applies to plan cash flow.

Aggregate method estimates are approximations, actual amounts depend on pay frequency, exact wages, and W-4 elections. The flat method always produces $2,200 withholding on a $10,000 bonus regardless of the employee’s bracket.

Employees in the 10% or 12% bracket who receive a bonus under the flat 22% method have excess withholding, they overpay during the year and receive a refund at filing. Employees in the 24%+ brackets who receive a bonus under the flat 22% method have under-withholding on the bonus, they owe additional tax at filing. Employees can request additional withholding on Form W-4 to cover this shortfall if they choose.

7 Strategies to Reduce Tax on a Year-End Bonus

7 legal strategies reduce the actual federal income tax on a year-end bonus: (1) maximize 401(k) contributions to reduce AGI, (2) contribute to an HSA, (3) defer the bonus to January if in a lower income year ahead, (4) accelerate deductible expenses into the bonus year, (5) harvest capital losses to offset gains pushed up by the bonus, (6) increase charitable giving, and (7) convert to a Roth IRA in the same year if the bonus creates a one-time elevated income year.

• Strategy 1: Maximize 401(k) before the bonus is paid: traditional 401(k) contributions reduce federal taxable income dollar for dollar. The 2025 contribution limit is $23,500 ($31,000 for employees age 50+). If the employee has unused contribution room, increasing contributions from regular paychecks in the months before the bonus reduces taxable income, lowering the marginal bracket that applies to the bonus dollars.
• Strategy 2: Contribute to an HSA (Health Savings Account): the 2025 HSA contribution limit is $4,150 for individual coverage and $8,300 for family coverage (plus $1,000 catch-up for age 55+). HSA contributions reduce federal AGI and are exempt from federal income tax. Maxing the HSA before December 31 reduces the marginal rate applied to bonus income.
• Strategy 3: Request the employer defer the bonus to January: if 2026 will be a lower-income year (job change, planned part-time work, retirement), deferring the bonus into January 2026 shifts the income and the tax liability into the lower-income year. Employers are not obligated to defer bonuses, but many do so for employee retention purposes.
• Strategy 4: Accelerate deductible expenses into the bonus year: mortgage interest prepayment, year-end charitable contributions, and qualifying business expenses can be accelerated into December to increase itemized deductions, reducing taxable income in the same year the bonus is received.
• Strategy 5: Harvest capital losses: capital losses from declining taxable investments can be realized before December 31 to offset capital gains recognized during the year. Up to $3,000 of net capital losses can also offset ordinary income, including bonus income, in the same year, with unlimited carryforward to future years.
• Strategy 6: Qualified Charitable Distributions (age 70½+): employees age 70½ or older with IRA accounts can make a qualified charitable distribution of up to $108,000 directly from the IRA to a qualified charity, reducing IRA income without increasing AGI, which indirectly reduces the bracket impact of the bonus.
• Strategy 7: Evaluate a Roth IRA conversion: in a year when a bonus pushes income unusually high but next year’s income is expected to be lower, a Roth conversion is generally not optimal, it adds more income. However, in a year when total income including the bonus stays within a lower bracket, converting a portion of a traditional IRA to Roth at that bracket rate locks in a lower rate permanently.

Employer Tax Obligations on Bonus Payments

Employers owe 3 payroll tax obligations on bonus payments in addition to the employee-side withholding: the employer’s matching 6.2% Social Security (up to the wage base), the employer’s matching 1.45% Medicare (no cap), and Federal Unemployment Tax (FUTA) at 6% on the first $7,000 of total wages per employee per year, reduced to a net 0.6% after the typical 5.4% FUTA credit for states with no outstanding federal loans.

Employers report all bonus payments on the employee’s Form W-2 at year-end — Box 1 (wages) includes bonus amounts, and Box 2 shows total federal income tax withheld including bonus withholding. Employees do not receive a separate tax form for a bonus. The W-2 combines all forms of compensation.

How to Use the Bonus Tax Calculator on USATaxCalculator.com

Use the bonus tax calculator by entering 5 fields: bonus amount, annual salary, filing status, state of residence, and year-to-date wages already earned. The calculator returns federal withholding (flat 22% and aggregate method), Social Security, Medicare, state tax, and net bonus take-home, shown for both the percentage method and the aggregate method side by side.

• Step 1: Enter the bonus amount, the gross pre-tax bonus the employer is paying.
• Step 2: Enter annual salary, used to determine the federal tax bracket for the aggregate method calculation and to check proximity to FICA wage base limits.
• Step 3: Enter YTD wages already paid before this bonus, determines how much Social Security wage base remains before the $176,100 cap.
• Step 4: Select filing status, Single, Married Filing Jointly, Married Filing Separately, or Head of Household.
• Step 5: Select state of residence, the calculator applies the 2025 state supplemental wage withholding rate for all 50 states.
• Step 6: Review results, flat method net bonus, aggregate method net bonus, total withholding breakdown by component, and the difference between methods.

More Free Calculators on USATaxCalculator.com

USATaxCalculator.com provides 9 additional tools that work alongside the bonus tax calculator:

• Paycheck Calculator — Calculate regular paycheck take-home for any salary and state with full withholding breakdown
• Overtime Calculator — Compute FLSA overtime pay and after-tax take-home on time-and-a-half earnings
• Hourly to Salary Calculator — Convert any hourly rate to annual salary equivalent with full tax estimates
• US Income Tax Calculator — Estimate total annual federal income tax including bonus income
• Capital Gains Tax Calculator — Calculate tax on investment sales that may be affected by bonus income pushing into higher brackets
• 401(k) Contribution Calculator — Model how increasing 401(k) contributions before a bonus is paid reduces total annual tax
• Georgia Tax Calculator — Estimate Georgia tax and quarterly payments

FAQs About Bonus Tax Calculator 2026

Q1. Are bonuses taxed at 40%?

Bonuses are not taxed at 40% under any standard federal withholding scenario. The maximum federal supplemental wage withholding rate is 37%, which applies only when supplemental wages paid to one employee from one employer exceed $1,000,000 in a single calendar year. Below $1,000,000, the flat federal withholding rate on bonuses is 22%. The perception of 40% taxation arises when all withholding components are added: federal income tax (22%) + Social Security (6.2%) + Medicare (1.45%) + a high-rate state like California (10.23%) = approximately 39.88% combined. That combined rate is not a single tax, it is the total of 4 separate withholding streams on the same paycheck.

Q2. How do I calculate tax on my bonus?

Bonus tax is calculated using one of 2 IRS-approved methods. The flat percentage method: multiply the gross bonus by 22% for federal income tax, then separately calculate 6.2% for Social Security (if YTD wages are below $176,100), 1.45% for Medicare, and any applicable state supplemental rate. The aggregate method: add the bonus to the most recent regular paycheck, calculate withholding on the combined amount using standard IRS tables, then subtract the regular withholding to find the bonus-specific withholding. The employer chooses the method. Use the bonus tax calculator on this page to run both methods with your bonus amount and state in seconds.

Q3. How much will my $10,000 bonus be taxed?

A $10,000 bonus withheld under the flat 22% method results in $2,200 in federal income tax withholding. FICA adds $620 in Social Security (6.2%) and $145 in Medicare (1.45%), for total FICA of $765. In a state with no income tax (Texas, Florida, Nevada), combined withholding is $2,965, leaving $7,035 in net take-home. In California (10.23% supplemental rate), state withholding adds $1,023, reducing take-home to approximately $6,012. The actual federal tax you owe on the bonus depends on your total annual income and bracket — 22% flat withholding is an estimate that gets reconciled on your tax return.

Q4. Are bonuses taxed at 37%?

Bonuses are withheld at 37% only when supplemental wages paid from one employer to one employee exceed $1,000,000 in a calendar year. Below $1,000,000, the flat federal withholding rate is 22%, not 37%. The 37% figure is the top federal income tax bracket rate, which applies to ordinary taxable income above $626,350 (single) or $751,600 (MFJ) in Tax Year 2026. A high-earning employee who receives a $200,000 bonus is still withheld at only 22% (flat method) because $200,000 is under the $1,000,000 supplemental wage threshold. At filing, if the 37% bracket applies to that executive’s total income, the executive owes the 15-percentage-point difference not covered by the 22% withholding.

Q5. Is bonus withholding the same as the final tax I owe?

Bonus withholding and final tax owed are almost never exactly the same for high or low earners. Federal withholding on a bonus is 22% under the flat method, but the actual federal income tax owed on that bonus is determined by the employee’s total annual taxable income and marginal bracket. A worker in the 12% bracket who had 22% withheld overpaid by 10 percentage points and receives a refund. A worker in the 32% bracket who had 22% withheld underpaid by 10 percentage points and owes the difference at filing. The flat 22% withholding rate is a withholding mechanism, not a final tax determination. Final tax is calculated on the Form 1040 based on all income combined.

Q6. Do bonuses affect my Social Security and Medicare taxes?

Bonuses are subject to Social Security (6.2%) and Medicare (1.45%) taxes, with the same rules that apply to regular wages. Social Security applies only up to the annual wage base of $176,100 in 2026. Once an employee’s total year-to-date wages from an employer hit $176,100, no additional Social Security is withheld from any wages or bonuses for the rest of that calendar year. Medicare has no cap and applies to every dollar of bonus regardless of prior earnings. An additional 0.9% Medicare surtax applies once total wages from an employer exceed $200,000, the employer begins withholding this once YTD wages pass $200,000, and the employee reconciles the full year’s liability on Form 1040.

Q7. Can I reduce the withholding on my bonus?

Employees cannot directly select a lower withholding rate for a bonus. The employer is required by the IRS to withhold at 22% (flat method) or at the aggregate rate, whichever method the employer uses. Employees cannot instruct their employer to withhold at a lower rate on a bonus. However, employees can reduce the overall tax impact of a bonus through year-round W-4 adjustments: claiming additional allowances or adjusting Step 4 deductions on the W-4 to reduce regular paycheck withholding, effectively smoothing the withholding over the full year. Strategic 401(k) contributions and HSA contributions also reduce federal AGI, which reduces the actual tax owed on the bonus when the annual return is filed.

Q8. How is a signing bonus taxed?

A signing bonus is taxed as supplemental wages, the same federal withholding rules apply as for any other bonus. The employer withholds 22% (flat method) or uses the aggregate method, plus FICA, plus applicable state tax. Signing bonuses are reported on Form W-2 and included in ordinary taxable income. Some signing bonus agreements include a clawback clause requiring repayment if the employee leaves before a specified date. If the bonus was included in income in Year 1 and repaid in Year 2, the employee may deduct the repaid amount under the claim of right doctrine (IRC Section 1341), either as an itemized deduction or as a credit against Year 2 tax, whichever produces the greater benefit.

Q9. What is the aggregate method for bonus withholding?

The aggregate method combines the bonus with the employee’s most recent regular wages for the pay period and calculates total withholding on the combined amount using the standard IRS withholding tables. The employer then subtracts the withholding that would have applied to the regular wages alone, leaving the incremental withholding attributable to the bonus. The aggregate method produces withholding that reflects the employee’s actual marginal bracket at their current income level. It produces higher withholding than the flat 22% method for employees in brackets above 22% (24%, 32%, 35%, 37%), and lower withholding for employees in brackets below 22% (10%, 12%). Not all payroll systems support the aggregate method, many default to the flat 22% rate.

Q10. Are noncash bonuses taxed differently than cash bonuses?

Noncash bonuses, including gift cards, merchandise, travel awards, and employee achievement awards exceeding the de minimis threshold, are taxable as ordinary income at the same rates as cash bonuses. The IRS requires employers to include the fair market value of noncash bonuses in the employee’s taxable wages and apply the same supplemental wage withholding rules. De minimis fringe benefits with a value so small that accounting for them is unreasonable (typically individual items worth less than $25–$50) are not taxable. Gift cards, however, are never de minimis and are always taxable regardless of amount. Employers can either add the value of a noncash bonus to the employee’s paycheck for withholding purposes, or they can gross up the award, paying the employee additional cash to cover the taxes owed on the noncash item.