Withholding tables, state and local taxes, voluntary deductions, and benefits vary widely. The calculator uses a flat rate; your real paystub is the source of truth.

Social Security (6.2%) + Medicare (1.45%) = 7.65% of gross. The Social Security portion caps at the annual wage base; Medicare has no cap and adds 0.9% above ~$200k.

Yes — 401(k) contributions, HSA contributions, and pre-tax health insurance reduce taxable income, so they save you tax at your marginal rate.

Bonuses are taxed at 22% federal withholding by default (37% above $1M). That's withholding, not the final tax — your actual bracket determines what's owed at year-end.

This calculator is US-oriented. For other countries, use a country-specific net-pay calculator that knows the local tax brackets.