Income & Paycheck
Paycheck, salary, bonus, overtime, and self-employment tax — net vs gross with U.S. payroll rules.
Guides
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Calculators for this topic
All tax calculators →Income Tax Calculator
Annual income tax across regions.
Paycheck Calculator (US)
Take-home pay after federal, FICA, and state taxes.
Self-Employment Tax Calculator
15.3% SE tax (Social Security + Medicare) for freelancers and 1099 workers.
W-4 Withholding Calculator
Federal tax withheld per paycheck using 2025 IRS brackets.
Bonus Tax Calculator
IRS 22% supplemental method plus FICA and state on your bonus.
State Income Tax Calculator
Top marginal state income tax across all 50 states plus DC (2025).
Section 179 Deduction Calculator
First-year equipment expensing with 2025 limits, bonus depreciation and MACRS.
Retirement Tax Calculator
Federal tax on Traditional, Roth, Social Security and pension income.
Net Investment Income Tax (NIIT) Calculator
3.8% NIIT under IRC §1411 on the lesser of net investment income or MAGI over threshold.
Kiddie Tax Calculator
2025 Form 8615 tiers: $1,350 exempt, next $1,350 at child's rate, above $2,700 at parent's rate.