Federal income tax is calculated using tax brackets, not a single percentage
The federal income tax system does not take the same percentage from everyone. Instead, the IRS uses tax brackets—ranges of income that are taxed at different rates. The rate increases as your income goes up, but only the income within each bracket gets taxed at that rate. This means your overall tax rate (called your effective tax rate) is lower than the highest bracket you fall into.
For 2024, the federal tax brackets for single filers range from 10% on the lowest income to 37% on the highest. But if you earn $50,000, you do not pay 22% on all of it—you pay 10% on the first portion, then 12% on the next portion, then 22% only on the amount above a certain threshold. The result is that your actual tax bill is much lower than 22%.
Key Takeaways
- Federal tax brackets in 2024 range from 10% to 37%, but these rates apply only to income within specific ranges, not to your entire income.
- Your effective tax rate—the percentage of total income you actually pay—is almost always lower than the highest bracket rate you fall into.
- Tax brackets change each year for inflation, so the income thresholds that determine which bracket you land in shift annually.
- Your filing status (single, married filing jointly, head of household) determines which bracket thresholds apply to you.
- Deductions and credits can lower your taxable income or your tax bill directly, which changes the percentage you owe.
The 2024 federal tax brackets for each filing status
The IRS publishes new brackets every year to account for inflation. The brackets below are for the 2024 tax year (the return you file in 2025). The percentages are the same for all filing statuses, but the income ranges differ.
| Tax Rate | Single Filers | Married Filing Jointly | Head of Household |
|---|---|---|---|
| 10% | $0 to $11,600 | $0 to $23,200 | $0 to $17,400 |
| 12% | $11,601 to $47,150 | $23,201 to $94,300 | $17,401 to $66,550 |
| 22% | $47,151 to $100,525 | $94,301 to $201,050 | $66,551 to $100,525 |
| 24% | $100,526 to $191,950 | $201,051 to $383,900 | $100,526 to $191,950 |
| 32% | $191,951 to $243,725 | $383,901 to $487,450 | $191,951 to $243,700 |
| 35% | $243,726 to $609,350 | $487,451 to $731,200 | $243,701 to $609,350 |
| 37% | $609,351+ | $731,201+ | $609,351+ |
These thresholds are adjusted annually. The 2025 brackets will be slightly higher than 2024, and the 2026 brackets will shift again. When you file your return, use the brackets for the tax year you are reporting on, not the current calendar year.
How to calculate your effective tax rate
Your effective tax rate is your total federal income tax divided by your total income. It answers the question: "What percentage of my income did I actually pay in federal tax?" This number is almost always lower than the highest bracket rate you fall into.
For example, suppose you are a single filer with $60,000 in taxable income in 2024. You fall into the 22% bracket, but you do not pay 22% on all $60,000. Instead: the first $11,600 is taxed at 10% ($1,160), the next $35,550 is taxed at 12% ($4,266), and the remaining $12,850 is taxed at 22% ($2,827). Your total tax is $8,253. Divided by $60,000, your effective rate is about 13.8%—much lower than the 22% bracket rate.
What deductions and credits do to your tax rate
Two things lower the amount of federal tax you owe: deductions and credits. Deductions reduce your taxable income before the brackets are applied. Credits reduce your tax bill directly, dollar for dollar.
The standard deduction is the most common deduction. For 2024, it is $14,600 for single filers and $29,200 for married couples filing jointly. This amount is subtracted from your gross income before your tax is calculated. If you earn $60,000 as a single filer, your taxable income is $60,000 minus $14,600, or $45,400. You then apply the brackets to $45,400, not $60,000.
Tax credits work differently. The Earned Income Tax Credit (EITC) and the Child Tax Credit are common examples. These credits subtract directly from the tax you owe. A $2,000 credit means your tax bill is $2,000 lower, regardless of your bracket. Credits are often more valuable than deductions because they reduce your actual tax, not just your taxable income.
Why your paycheck withholding may not match your actual tax rate
Your employer withholds federal income tax from each paycheck based on the W-4 form you filled out. The withholding is an estimate meant to match your actual tax liability by the end of the year. If your withholding is too high, you get a refund. If it is too low, you owe money when you file.
Withholding does not always match your actual tax rate because your employer does not know about all your income, deductions, or credits. If you have a second job, investment income, or you are married and both spouses work, your withholding may be off. If you claim dependents or have significant deductions, your withholding may be too high. You can adjust your W-4 at any time to change how much is withheld from your paycheck.
Self-employment tax is separate from income tax
If you are self-employed, you pay self-employment tax in addition to federal income tax. Self-employment tax covers Social Security and Medicare and is currently 15.3% of your net self-employment income (12.4% for Social Security and 2.9% for Medicare). This is separate from the income tax brackets described above.
Self-employed people calculate their income tax using the same brackets as everyone else, but they also owe self-employment tax on top of it. You can deduct half of your self-employment tax when calculating your adjusted gross income, which lowers your taxable income slightly. Self-employment tax is reported on Schedule SE and paid with your tax return or through quarterly estimated tax payments.
Frequently Asked Questions
Do I pay the top tax bracket rate on all my income?
No. Tax brackets are progressive, meaning each portion of your income is taxed at the rate for that bracket only. If you fall into the 24% bracket, only the income above the 22% threshold is taxed at 24%. The income below that threshold is taxed at the lower rates (10%, 12%, 22%) that apply to those ranges.
What is the difference between my tax bracket and my effective tax rate?
Your tax bracket is the highest rate that applies to your income. Your effective tax rate is your total tax divided by your total income. Because of the progressive bracket system, your effective rate is always lower than your bracket rate. A person in the 24% bracket might have an effective rate of 16%.
Will the tax brackets change next year?
Yes. The IRS adjusts tax brackets annually for inflation. The 2025 brackets will be higher than 2024, meaning the income ranges that trigger each rate will shift upward. When you file your 2025 return in 2026, you will use the 2025 brackets, not the 2024 ones shown here.
How do tax credits lower my tax rate?
Tax credits subtract directly from your tax bill, not from your income. A $1,500 credit means you owe $1,500 less in federal tax, regardless of your bracket or income level. This makes credits more valuable than deductions of the same dollar amount, because deductions only reduce the income that gets taxed.
Do state and local taxes use the same brackets as federal tax?
No. Each state sets its own tax brackets, rates, and rules. Some states have no income tax at all. Your federal tax is calculated using the IRS brackets shown here, and your state tax (if your state has one) is calculated separately using your state's brackets. Both are reported on your tax return.