Federal Income Tax Calculator
Marginal and effective tax rate from 2024 brackets.
Enter your values
Enter the gross annual income in $.
Choose one of: Single, Married filing jointly.
Enter the deductions above the standard in $.
Results update instantly as you type — no submit needed. Your values are remembered on this device, and the shareable link reopens the calculator with exactly these numbers.
- Estimated federal tax
- $10,541.00
- Marginal bracket
- 22%
- Effective rate
- 12.4%
- Taxable income after deduction
- $70,400.00
- After-tax income
- $74,459.00
Quick answer
US federal income tax is progressive: each slice of income is taxed at its own bracket rate, so your effective rate is always below your marginal rate.
At a glance
| What it does | Marginal and effective tax rate from 2024 brackets. |
|---|---|
| Category | Finance |
| Inputs needed | Gross annual income, Filing status, Deductions above the standard |
| Main output | Estimated federal tax |
| Cost | Free — no sign-up, no download |
How to use the Federal Income Tax Calculator
- 1Enter your gross annual income.
- 2Pick your filing status.
- 3Add itemised deductions above the standard amount.
Inputs explained
- Gross annual income($)
- Enter the gross annual income in $.
- Filing status
- Choose one of: Single, Married filing jointly.
- Deductions above the standard($)
- Enter the deductions above the standard in $.
Worked example
Using the values the calculator loads with:
Inputs
- Gross annual income85000 $
- Filing statusSingle
- Deductions above the standard0 $
Results
- Estimated federal tax$10,541.00
- Marginal bracket22%
- Effective rate12.4%
- Taxable income after deduction$70,400.00
- After-tax income$74,459.00
Frequently asked questions
Marginal vs effective rate?
Marginal is the rate on your next dollar; effective is total tax divided by total income, and is always lower.
Does this include state tax and FICA?
No. It estimates federal income tax only, using 2024 brackets and standard deduction.
What do I need to enter into the Federal Income Tax Calculator?
Just 3 values: gross annual income, filing status, deductions above the standard. Every field starts with a realistic example, so you can change one number at a time and watch the result update instantly.
How does the Federal Income Tax Calculator work out the answer?
US federal income tax is progressive: each slice of income is taxed at its own bracket rate, so your effective rate is always below your marginal rate. The working is shown step by step so you can verify the result by hand.
Is the Federal Income Tax Calculator free, and do I need an account?
It is completely free with no sign-up, no download and no usage limit. Everything is calculated in your browser, so the numbers you type never leave your device.
Results are estimates for general information. For medical, legal, structural or financial decisions, confirm with a qualified professional.