Calculate your bonus take-home after federal taxes, state taxes, Social Security, and Medicare withholding.
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A mid-level software engineer in Austin, TX is comparing a $130,000 W-2 offer against their current $115,000 role. The new offer includes a $10,000 signing bonus and 0.1% equity in a Series B company.
Takeaway: Texas has no state income tax, which inflates take-home vs. the same offer in California (~9.3% marginal) or New York (~6.85%). Run the comparison with your state's rate above.
Take-home calculators estimate withholding based on single/married status and claimed allowances. If you have side income, multiple jobs, or itemized deductions, your actual withholding will differ. The IRS Tax Withholding Estimator is the most accurate tool for W-4 calibration.
Nine states have no income tax (TX, FL, WA, NV, AK, SD, WY, TN, NH). California tops out at 13.3% marginal. State tax can shift your net paycheck by $200-$1,000/month on a $100K salary. Always select your state before reading take-home results.
Cost of Living Salary AdjustmentEmployer-paid health insurance, 401(k) match, HSA contributions, and paid leave have real dollar value — typically $8,000-$25,000/year for a mid-career employee. Comparing two offers on base salary alone ignores a major component of total compensation.
Benefits Value CalculatorW-2 employees pay 7.65% FICA (SS + Medicare); employers match it invisibly. 1099 contractors pay the full 15.3% self-employment tax. A $100K 1099 contract has roughly $7,650 more tax friction than a $100K W-2 salary before any other adjustments.
1099 vs W-2 Tax ComparisonBonuses are withheld at a flat 22% federal supplemental rate (or 37% over $1M) — not your effective rate. Your actual tax on the bonus is determined at year-end filing. If your marginal rate is below 22%, you'll get a refund; above, you may owe.
Bonus Tax CalculatorBased on your inputs
34.6% effective tax rate
| Gross Bonus | $8,000 |
|---|---|
| Federal Tax | $1,760 |
| State Tax | $400 |
| Social Security | $496 |
| Medicare | $116 |
| Total Taxes | $2,772 |
| Bonus Take-Home | $5,228 |
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The IRS uses a flat 22% supplemental wage withholding for bonuses under $1M (37% above). State taxes also apply.
Your employer adds your bonus to your regular paycheck and withholds taxes based on your total earnings, which may result in a higher rate.
Most employees receive 5–15% of base salary. Senior executives may receive 20–100%+. Performance-based bonuses vary widely.
Yes. Social Security (6.2% up to wage base) and Medicare (1.45%) apply to bonus income just like regular wages.
Yes, if your employer allows bonus deferrals to 401k. This is one of the best tax strategies for bonuses. A $10,000 bonus directed to a pre-tax 401k saves $2,200+ in federal taxes immediately while boosting retirement savings.
Bonuses appear heavily taxed because of the 22% flat federal withholding rate plus state taxes, Social Security, and Medicare. However, your actual tax rate depends on your total annual income. You may get some back as a refund when you file your return.
Sign-on bonuses are one-time payments for joining a company, often with a clawback if you leave within 1-2 years. Annual bonuses are recurring performance-based payments. Both are taxed as supplemental wages at 22% federal withholding.
For the flat rate method: subtract 22% federal tax, 6.2% Social Security, 1.45% Medicare, and your state tax rate. A $10,000 bonus in a 5% state tax state nets approximately $6,535. The aggregate method may withhold more or less depending on your regular pay.
Annual performance bonuses are usually paid in Q1 (January-March) for the prior year's performance. Quarterly bonuses pay within 30-45 days after quarter end. Sales commissions and spot bonuses may pay monthly. Timing affects which tax year the bonus falls in.
The aggregate method combines your bonus with your most recent regular paycheck, calculates tax on the total as if it were a single payment, then subtracts taxes already withheld from your regular pay. This method often withholds more than the flat 22% rate for higher earners.
Flat Method: Fed Tax = Bonus × 22%
Aggregate: Tax based on total income bracket
Take-Home = Gross − Fed − State − FICA
Every formula on this page traces to a federal agency, central bank, or peer-reviewed institution. We cite the rule-makers, not secondhand blogs.
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Result: $10,718 net bonus (28.5% effective)
IRS Pub 15 flat supplemental 22% fed + 7.65% FICA = 29.65%. TX has no state tax. Bonus nets $10,718. Any over-withholding refunds at filing.
Result: $23,660 net (40.85% effective)
22% fed + 10.3% CA marginal + 1.45% Medicare (past SS wage base $176,100 in 2025 so no SS on bonus) + 0.9% additional Medicare on comp > $200k = 40.85%.
Result: $3,882 net
Aggregate adds bonus to regular paycheck. At 12-22% bracket + FICA 7.65%, withholding ~22.4%. Typical clawback: full repayment if you leave within 12 months.
Result: $15,818 net (36.7%)
22% fed + 10.73% combined NY/NYC + 7.65% FICA. Common strategy: defer $15k into 401k (IRS 2025 limit $23,500) to shelter 22% + 10.73% = $4,910 tax savings.
Result: $52,550 net
IRS rule: supplemental wages >$1M cumulative in a year withhold at 37% flat. This bonus crosses the threshold — 37% fed + 4.95% IL + 1.45% Medicare + 0.9% addl Medicare = 47.3%.
Result: $4,000 deferred; $2,874 net cash
$4k Roth 401k still subject to FICA + state tax (Roth = after-tax fed) but grows tax-free. Remaining $4k taxed at 22%+3.5%+7.65%=33.15%, net $2,674 — total value $4,000 Roth + $2,674 cash.
22% is withholding only. True tax depends on marginal bracket at year-end. High earners may owe more at filing; lower earners may refund.
Impact: A $10k bonus in 32% bracket under-withholds by $1,000 — expect April bill.
2025 SS wage base is $176,100. Bonuses above this cap skip the 6.2% SS tax.
Impact: High earners save $500-$1,000 on large year-end bonuses vs early-year bonuses.
Many plans let you elect a % of bonus into 401k. Shelters 22-37% federal + state immediately.
Impact: $20k bonus deferred saves $4,400-$7,400 in fed tax alone; plus $1,400+ compound growth first year at 7%.
Sign-on bonuses typically clawback on pro-rata basis if you leave within 12-24 months. Calculate net after clawback before accepting.
Impact: A $20k bonus with 2-year clawback leaving after 18 months = $5k repayment plus potential 1099 confusion.
IRC §3101(b)(2): extra 0.9% Medicare on wages above $200k single / $250k MFJ.
Impact: A $500k earner with $100k bonus owes an extra $900 not covered by standard 1.45%.
Aggregate can withhold LESS than 22% if your base is in the 12% bracket.
Impact: A $45k base earner with a $5k bonus may see only ~15% fed withheld under aggregate vs 22% flat.
Fannie Mae/Freddie Mac require 2-year history of variable income. Lenders use trailing 24-month average, not peak year.
Impact: A $30k bonus last year but $0 prior year counts as $15k/yr for DTI — can reduce max mortgage by $50k.
Calculations are for educational purposes only. Consult a qualified financial advisor for personalized advice.