Income Tax Calculator
Estimate income tax with progressive tax brackets.
| Bracket | Rate | Taxable | Tax |
|---|---|---|---|
| $0 – $11,600 | 10% | $11,600.00 | $1,160.00 |
| $11,600 – $47,150 | 12% | $35,550.00 | $4,266.00 |
| $47,150 – $100,525 | 22% | $13,250.00 | $2,915.00 |
How does US federal income tax work?
The United States uses a progressive tax system with marginal tax brackets. This means different portions of your income are taxed at different rates. Only the income within each bracket is taxed at that bracket's rate — not your entire income. Your effective tax rate (total tax divided by total income) is always lower than your marginal rate (the rate on your last dollar of income).
Before applying tax brackets, your taxable income is reduced by deductions. Most taxpayers use the standard deduction rather than itemizing. The standard deduction, tax brackets, and many other parameters are adjusted annually for inflation.
Tax brackets explained
For example, a single filer with $60,000 taxable income in 2024 pays 10% on the first $11,600, 12% on income from $11,601 to $47,150, and 22% on income from $47,151 to $60,000. The total tax is about $8,360, giving an effective rate of approximately 13.9% — even though the marginal rate is 22%.
Standard deduction (2024)
- Single: $14,600.
- Married filing jointly: $29,200.
- Head of household: $21,900.
How to use this tool
Enter your filing status, gross income, and any deductions or adjustments. The calculator applies the current year's tax brackets and standard deduction to estimate your federal income tax, effective tax rate, and marginal tax rate. State taxes are calculated separately if your state has an income tax.
Tax reduction strategies
Maximize pre-tax retirement contributions (401k, traditional IRA) to reduce taxable income. Use Health Savings Accounts for medical expenses — contributions are tax-deductible, growth is tax-free, and withdrawals for qualified medical expenses are also tax-free (triple tax advantage). Charitable contributions, mortgage interest, and state and local taxes can be itemized if they exceed the standard deduction.
Worked example
Suppose a single filer earns $60,000 with a $14,600 standard deduction, leaving $45,400 in taxable income. Under 2024 US federal brackets, the first $11,600 is taxed at 10% ($1,160) and income from $11,600 to $45,400 at 12% ($33,800 × 12% = $4,056). Total federal tax is about $5,216 — an effective rate of 8.7%, well below the 12% bracket that only applies to the last dollar earned.
Common mistakes
The biggest misconception is that entering a higher tax bracket taxes all your income at that rate. Only the income falling within each bracket is taxed at that bracket’s rate — this is marginal taxation, so a pay rise never leaves you with less take-home pay. People also confuse the marginal rate (on the last dollar) with the effective rate (total tax ÷ total income), and forget that pre-tax contributions such as a 401(k) reduce taxable income.
Frequently asked questions
Will earning more money ever result in lower take-home pay?
No — this is a common misconception. The US progressive tax system means only the additional income is taxed at the higher rate. If a raise pushes you into a higher bracket, only the income above the bracket threshold is taxed at the new rate. Your take-home pay always increases when your gross pay increases.
What is the difference between tax deductions and tax credits?
A tax deduction reduces your taxable income — its value depends on your tax bracket. A $1,000 deduction saves $220 if you are in the 22% bracket. A tax credit directly reduces your tax bill dollar-for-dollar — a $1,000 credit saves exactly $1,000 regardless of your bracket. Credits are generally more valuable than deductions.
What is the difference between marginal and effective tax rate?
Your marginal rate is the rate charged on your highest dollar of income, while your effective rate is total tax divided by total income. Because lower brackets tax your earlier income at lower rates, the effective rate is always lower than the marginal rate.