US tax,
without the black box.
Calculate federal income and payroll tax, understand every bracket, explore all 50 states plus DC, and plan high income decisions with visible sources and honest exclusions.
Live federal example
Single filer, 2025, W-2 wages
After included federal taxes
$78,895
$6,575 monthly
- Federal income tax
- $13,455
- Employee payroll tax
- $7,650
- Effective included rate
- 21.1%
- Marginal ordinary rate
- 22%
Start with your goal
Choose the decision you are making
Employees
Estimate federal take home
W-2 wages, filing status, spouse wages, payroll taxes, investment income, and basic dependent credits.
Investors
Stack long term gains correctly
See 0%, 15%, and 20% capital gain bands plus NIIT without using a separate federal formula.
Retirement
Price a traditional 401(k) contribution
Compare federal income tax before and after a contribution while keeping FICA treatment explicit.
High earners
Map surtaxes and blind spots
Additional Medicare, NIIT, capital gains stacking, AMT warnings, estimated payments, and state exposure.
State taxes
Federal take home is only part of the answer.
Eight states levy no broad individual income tax. Washington does not tax wages but can tax certain long term capital gains. Every other state remains clearly marked as a profile, not a calculated liability.
Compare every state and DC8
No broad individual income tax
15
Flat rate states
27
Graduated jurisdictions
1
Special income only
Learn before acting
Detailed US tax guides
Trust method
Dated rates, exact tables, and visible limits.
Federal figures are versioned by tax year and linked to IRS and Social Security sources. State profiles identify their research date and support level. Charts always have an exact value table, and unmodeled items remain visible.
Read the US methodology