Tax Bracket Calculator
Determine your marginal tax rate and effective tax rate
About this calculator
A Tax Bracket Calculator helps you determine both your marginal tax rate (the percentage paid on your last dollar of income) and effective tax rate (your overall tax percentage). This tool is essential for tax planning, budgeting, and understanding how additional income affects your tax burden. By knowing these rates, you can make informed decisions about retirement contributions, salary negotiations, and investment timing to optimize your tax strategy.
How to use
Enter your annual taxable income and select your filing status (single, married filing jointly, etc.). The calculator will automatically determine which tax bracket you fall into and compute both your marginal and effective tax rates based on current federal tax brackets.
Frequently asked questions
What's the difference between marginal and effective tax rates?
Marginal tax rate is the percentage on your highest dollar earned, while effective tax rate is your total tax divided by total income.
Does this include state taxes?
This calculator typically shows federal tax brackets only. State tax rates vary by location and would need separate calculation.
How often do tax brackets change?
Tax brackets are adjusted annually for inflation by the IRS, with rates and income thresholds potentially changing each tax year.