Bonus Take Home Pay Calculator: Your Net Bonus
You were promised a $10,000 bonus and the deposit says $6,535. Nothing went wrong. Bonuses are supplemental wages, and most employers withhold a flat 22% for federal tax before Social Security, Medicare, state tax and any 401(k) election take their turn. This bonus take home pay calculator shows where every dollar of your bonus goes, line by line, and then compares the flat 22% method against the aggregate method side by side, because the two can differ by hundreds of dollars on the same bonus.
It also handles the two cases most bonus calculators quietly get wrong: the mandatory 37% withholding tier on supplemental wages above $1 million a year, and the Social Security wage base, which stops the 6.2% tax once your salary plus bonus pass $184,500 in 2026. If your bonus is the gross figure in an offer rather than a check you already received, work out that gross figure first; this page starts where the bonus amount is already known.
Withholding is not your final tax. The bonus is taxed as ordinary income on your return, so over-withholding returns as a refund and under-withholding becomes a balance due. This calculator estimates the check, not the filing outcome.
Quick Answer
Key takeaways
- The 22% is withholding, not a special bonus tax. Your final tax is computed on total income at ordinary brackets, and any excess withheld comes back as a refund.
- At some incomes the two withholding methods agree to the dollar: at an $80,000 salary the whole $10,000 bonus sits inside the 22% bracket, so flat and aggregate both withhold $2,200 federal.
- At a $45,000 salary they split apart: aggregate withholding is $1,660 against the flat $2,200, a $540 difference on the same $10,000 bonus.
- Social Security stops at the wage base. A $180,000 salary leaves only $4,500 of room under the $184,500 cap, so a $20,000 bonus owes just $279 of Social Security tax, not $1,240.
- Quick Answer
- Where the bonus goes: the deduction order
- Worked example: $10,000 on an $80,000 salary
- Flat 22% vs. aggregate: when the method changes the check
- The cap and the million-dollar tier: two edges done properly
- What competing calculators miss
- Frequently Asked Questions
- Add This Calculator to Your Website
- References
Where the bonus goes: the deduction order
Every line is computed on the same base, in the same order, whichever method you pick. The method only changes the size of the federal line.
401(k) first, if your plan takes one. The contribution percentage comes off the gross bonus, and every tax below is computed on what remains. Enter 0 if your plan does not withhold from bonuses, which is the common default.
Federal withholding. Flat method: 22% of the remainder, or 22% on the first $1 million of supplemental wages and a mandatory 37% above that. Aggregate method: the extra tax the bonus creates when it is stacked on top of your salary in the 2026 bracket table for your filing status.
Social Security at 6.2%, capped. Only the part of the bonus that fits under the $184,500 wage base is taxed. Your salary uses the base first, so a salary already at the cap means zero Social Security on the bonus.
Medicare at 1.45%, uncapped, plus 0.9% at high wages. Medicare applies to the whole remainder at any income. Once salary plus bonus passes $200,000, this calculator adds the 0.9% additional Medicare withholding on the bonus, matching the employer withholding trigger.
State withholding. Your entered rate applied to the remainder. States set their own supplemental rates (a few use a flat bonus rate of their own), and nine states have no wage income tax at all: enter 0 there.
If you do not yet know the gross bonus, only the percentage in your offer, the bonus salary calculator converts salary and percentage into the dollar bonus (and total compensation) that belongs in the bonus field here. The two pages answer consecutive questions: what is the bonus, then what survives it.
Worked example: $10,000 on an $80,000 salary
The calculator is pre-filled with this case: $80,000 salary, $10,000 bonus, single filer, flat rate, 5% state, no 401(k) on the bonus. Every figure is the tool’s own output:
| Line | Value |
|---|---|
| Federal withholding ($10,000 x 22%) | $2,200.00 |
| Social Security ($10,000 x 6.2%, salary under the cap) | $620.00 |
| Medicare ($10,000 x 1.45%) | $145.00 |
| Additional Medicare (total wages under $200,000) | $0.00 |
| State tax ($10,000 x 5%) | $500.00 |
| Total deductions | $3,465.00 |
| Take-home pay (keep 65.35%) | $6,535.00 |
One row deserves a second look: the effective rate of 34.65% counts only money that leaves the check. Because the worked example takes no 401(k) from the bonus, the rate is pure tax here. If you do enter a 401(k) percentage, the tool counts that contribution inside total deductions, so the effective rate rises even though that slice went into your own retirement account rather than to the government.
Flat 22% vs. aggregate: when the method changes the check
The flat method ignores who you are; the aggregate method prices the bonus at your own marginal rate. Which one is bigger depends entirely on where your salary sits in the brackets.
At the worked example’s income they tie. An $80,000 salary plus a $10,000 bonus keeps every bonus dollar inside the single filer’s 22% bracket ($50,400 to $105,700 of taxable income), so the aggregate computation also returns $2,200. Drop the salary to $45,000 and the tie breaks: the first $5,400 of the bonus is taxed at 12% as it fills the bracket up to $50,400, and only the remaining $4,600 reaches 22%, giving aggregate federal withholding of $1,660 and a take-home of $7,075. That is $540 more in the check than the flat method’s $6,535, on identical gross pay. Run the comparison table in the results with your own salary and you will see which side of the bracket edge you sit on.
Neither method is the final tax. Under IRS Publication 15, both are just ways to prepay. At filing, the bonus is ordinary income stacked on your salary, taxed through the same brackets the aggregate method approximates, and the difference between what was withheld and what you actually owe settles as a refund or a balance due. The same supplemental wage category covers commissions, severance and separately paid overtime, which is why an unpaid overtime calculator result and a bonus can land in the same withholding conversation.
The cap and the million-dollar tier: two edges done properly
High earners hit two edges that simple tools flatten away. This calculator models both, and both change real money.
| 2026 rule | Figure |
|---|---|
| Federal supplemental withholding | Flat 22% up to $1M of supplemental wages per year; mandatory 37% on the excess (IRS Publication 15) |
| Social Security wage base | $184,500; 6.2% applies only to wages under it |
| Medicare | 1.45% on all wages, no cap |
| Additional Medicare withholding | 0.9% once wages from the employer pass $200,000 in the year |
| Standard deduction (context for filing) | $16,100 single, $32,200 married filing jointly, per the IRS 2026 adjustments |
The cap in action: a $180,000 salary with a $20,000 bonus, flat method, no state tax. Only $4,500 of room remains under the $184,500 wage base, so Social Security is $4,500 x 6.2% = $279.00 instead of the $1,240 an uncapped tool would charge. Federal withholding is $4,400, Medicare is $290, and the take-home is $15,031.00. The million-dollar tier works the same way in the flat method: a $2,000,000 bonus is withheld as $220,000 on the first million plus $370,000 on the second, $590,000 in total, an effective federal rate of 29.50% rather than a flat 22% on the whole amount.
State withholding is the loosest input, deliberately: states set their own supplemental rates and brackets, and EY’s 2026 state supplemental rate table shows how wide the spread runs. In a no-income-tax state the honest entry is 0: a Texas reader can sanity-check the idea against the ADP Texas paycheck calculator, where the state line is absent by design.
What competing calculators miss
Most bonus tax tools that rank for this term run the same four lines: 22%, 6.2%, 1.45%, a state guess. Against that baseline, three gaps matter.
Miss 1: only one withholding method. The flat-only tools (the SumWize and Savvy style calculators) cannot show the aggregate figure at all, so a reader in the 12% bracket never learns the flat rate over-withheld by $540 on a $10,000 bonus. Here both methods are computed on every run and printed side by side, whether or not the method you selected is the one your employer uses.
Miss 2: the Social Security cap applied to the bonus alone. Several tools test the bonus against the wage base instead of salary plus bonus, so a high earner gets charged 6.2% on money the IRS does not tax. This calculator spends the base on salary first, the way payroll actually reaches the cap, and the $279-versus-$1,240 gap above is the size of the error it avoids.
Miss 3: the $1 million tier. Flat-22%-on-everything tools understate federal withholding on a $2,000,000 bonus by $150,000 ($440,000 against the correct $590,000 tiered figure). Rare air, but the readers in it are precisely the ones who cannot afford a casual estimate.
Frequently Asked Questions
Not exactly. The withholding is often higher, because of the flat 22% rate or because the aggregate method annualizes your pay, but your final tax is computed on total income at the normal brackets. A bonus is ordinary income like salary. If more was withheld than you owe, the difference comes back as a refund.
22% on supplemental wages up to $1 million per year, and a mandatory 37% on supplemental wages above $1 million, under IRS Publication 15. Employers may use the aggregate method instead of the flat rate in many cases, which is why this calculator shows both.
Because the flat supplemental rate is the employer’s default and does not look at your personal bracket. At a $45,000 salary, the aggregate method would withhold $1,660 on a $10,000 bonus against the flat $2,200. You cannot choose your employer’s method, but the over-withholding settles in your favour when you file.
Yes, at 6.2%, but only on wages up to the $184,500 Social Security wage base for 2026, and your salary uses that base first. On a $180,000 salary, a $20,000 bonus has only $4,500 of room left, so it owes $279.00 of Social Security tax. If your salary already passed the cap, none of the bonus owes it.
Instead of the flat 22%, the employer adds the bonus to your regular wages, computes the tax on the combined income, and subtracts the tax on the wages alone. This calculator estimates that marginal cost with the 2026 bracket tables for your filing status. At an $80,000 salary it matches the flat rate to the dollar; at $45,000 it withholds $540 less on a $10,000 bonus.
Only if your plan is set up that way. Many 401(k) elections apply only to regular paychecks, so check your plan or pay stub before assuming. If yours does apply, enter the percentage here: this calculator takes the contribution off the gross bonus first, then computes federal, FICA and state amounts on the remainder, and counts the contribution inside total deductions.
Yes. The IRS treats bonuses, commissions, severance pay and similar payments as supplemental wages, all eligible for the same flat-rate or aggregate withholding. A signing bonus runs through this calculator exactly like a performance bonus of the same size.
You cannot pick the supplemental rate or the method directly; those are your employer’s payroll choices within the IRS rules. What you can change is your Form W-4, which adjusts withholding on your regular pay across the year, and any pre-tax 401(k) election your plan allows on bonuses. Both change the final settlement rather than the bonus check’s own method.
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References
- Internal Revenue Service, “Publication 15, Employer’s Tax Guide”: supplemental wage withholding, the flat 22% rate, the mandatory 37% rate above $1 million, and the aggregate method. IRS Publication 15: Employer’s Tax Guide. Accessed October 2026.
- Internal Revenue Service, “IRS releases tax inflation adjustments for tax year 2026”: the 2026 bracket thresholds and standard deductions used by the aggregate method. IRS: Tax Inflation Adjustments for Tax Year 2026. Accessed October 2026.
- Wisconsin Department of Employee Trust Funds, “Social Security Wage Base for 2026”: the $184,500 contribution and benefit base that caps Social Security withholding for 2026. Wisconsin ETF: 2026 Social Security Wage Base. Accessed October 2026.
- EY Tax News, “2026 state supplemental flat tax and highest income tax withholding rates”: state supplemental withholding rates for 2026, the input behind the state rate field. EY: 2026 State Supplemental Withholding Rates. Accessed October 2026.
- LegalClarity, “When to Use the Supplemental Tax Rate on Payroll”: the flat rate and aggregate methods explained step by step against Publication 15. LegalClarity: Supplemental Tax Rate on Payroll. Accessed October 2026.