This is what the calculation gives for the numbers you entered. It is an estimate, not advice, and it knows nothing about your situation beyond those numbers. Rules for United States change on a published schedule; the effective date is shown on every rule-based tool.
How this is calculated
Each layer is added and divided by gross income to give the effective rate. The marginal rate is the sum of the federal and state marginal rates and describes what happens to the next dollar rather than the average across all of them. Confusing the two is the most common error in tax conversation: a twenty-four percent bracket does not mean twenty-four percent of income goes to federal tax. Payroll tax is included because it is a real deduction, and for lower incomes it is often the largest single component.
Worked examples
Each of these is asserted on every build. If a change to the engine ever moved one of these answers, the build would fail before the page could print it.
a 150,000 income across four layers
- Gross income
- $150,000.00
- Federal income tax
- $24,000.00
- State income tax
- $7,200.00
- Local income tax
- $0.00
- Social Security and Medicare
- $11,475.00
- Federal marginal rate
- 24%
- State marginal rate
- 6%
Total effective rate28.45%
Effective 28.45 against a marginal 30
Open this exampleno state tax lowers the total
- Gross income
- $150,000.00
- Federal income tax
- $24,000.00
- State income tax
- $0.00
- Local income tax
- $0.00
- Social Security and Medicare
- $11,475.00
- Federal marginal rate
- 24%
- State marginal rate
- 0%
Total effective rate23.65%
boundary
Open this exampleMethod and limits
What it assumes
- The tax figures supplied are computed elsewhere and simply combined here.
What it deliberately does not model
- State income tax is deductible federally subject to the SALT cap, which this does not net off.
- The employer half of payroll tax is not shown, though it is economically part of your cost.
Formula version 1.0.0 · definition 1.0.0 · United States · Report a problem with this calculator
Frequently asked questions
- Why is my effective rate so much lower than my bracket?
- Because brackets are marginal. Only the income inside the top bracket is taxed at that rate, and everything below it is taxed at lower rates.