Calculate how much of your bonus you will actually take home after federal supplemental tax, state tax, and FICA withholding.
Bonuses are taxed differently than regular wages — employers typically use the supplemental wage flat rate of 22% for federal withholding (or 37% for bonuses over $1 million). This means your bonus paycheck may look smaller than expected. This calculator shows your actual take-home amount after all taxes.
This bonus tax calculator estimates the net amount of a supplemental wage payment (bonus, commission, or one-time award) after federal flat-rate withholding, state income tax, and the employee share of FICA (Social Security and Medicare). The IRS requires employers to withhold a flat 22% on supplemental wages up to $1 million annually using the percentage method, which means the bonus is taxed at a fixed rate rather than added to your regular paycheck and pushed into higher brackets. The 22% rate is a withholding rate, not your actual final tax rate: if your marginal bracket is lower than 22%, you will receive a refund of the over-withheld amount when you file; if your marginal bracket is higher, you may owe additional tax. FICA (6.2% Social Security + 1.45% Medicare) also applies to bonuses as a flat additional withholding on top of the federal rate. Use this calculator to estimate what you will actually receive when you receive a bonus and to decide whether it is worth spending or saving. Key limitations include treating the flat 22% as your actual tax rate rather than a withholding mechanism, not accounting for other income that might already be near the $1M threshold, and ignoring state-specific bonus tax rules that may differ from the assumed flat state rate.
Result: A $10,000 bonus with 22% federal withholding and 5% state withholding: Federal withheld: $2,200, State withheld: $500, FICA (additional): $765. Total taxes: ~$3,465. Net bonus: $6,535. The flat 22% withholding is an estimate, not your final tax rate.
Understanding how to use financial calculators effectively requires knowing the underlying concepts. The bonus tax involves several key financial principles that affect your results.
Our calculator uses industry-standard formulas verified by certified financial professionals. The inputs you provide are processed entirely in your browser — we never store or transmit your financial data. Results update in real time as you adjust values, allowing you to explore different scenarios quickly.
For the most accurate results, use current figures from your most recent financial statements. If you are unsure about a specific input, our default values represent national averages based on data from the Federal Reserve, IRS, and Bureau of Labor Statistics.
Remember that calculator results are estimates for educational purposes. Your actual financial situation may differ based on factors like your credit score, specific lender terms, local regulations, and market conditions. We recommend consulting with a qualified financial professional before making major financial decisions.
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Results are estimates only and not financial advice. Calculator logic verified by Priya Sharma, CFA. Full disclaimer · Methodology