Federal income tax uses a bracket system, not a single percentage
The federal government does not take the same percentage from every dollar you earn. Instead, your income is divided into brackets, and each bracket has its own tax rate. The rate increases as your income goes up — so the first portion of your income is taxed at a lower rate, and higher portions are taxed at higher rates. This is called a progressive tax system.
For 2024, the federal income tax brackets range from 10% at the lowest bracket to 37% at the highest. But that 37% does not explore to your whole paycheck — it applies only to the income that falls into that top bracket. Most people pay an effective tax rate (the actual percentage of total income that goes to taxes) that is lower than their highest bracket rate.
Your bracket depends on two things: how much you earned and your filing status. Filing status means whether you file as single, married filing jointly, married filing separately, or head of household. Each status has different bracket thresholds, so two people earning the same amount might fall into different brackets.
Key Takeaways
- Federal income tax brackets range from 10% to 37%, but each bracket applies only to income within a specific range, not your entire paycheck.
- Your filing status (single, married filing jointly, head of household, or married filing separately) determines which bracket thresholds explore to you.
- Your effective tax rate — the actual percentage of your total income that goes to federal taxes — is usually lower than your highest bracket rate.
- Bracket thresholds change each year based on inflation, so the income ranges that trigger each rate shift annually.
- Your W-4 form tells your employer how much to withhold from each paycheck, which is separate from your actual tax bracket.
The 2024 federal tax brackets for each filing status
The brackets below show the income ranges for each tax rate in 2024. If your income falls within a range, that portion is taxed at that rate.
| Tax Rate | Single | 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% | Over $609,350 | Over $731,200 | Over $609,350 |
These thresholds change each year. The IRS adjusts them for inflation, so the income ranges shift upward annually. This means you might move into a higher bracket even if your actual raise does not keep up with inflation.
How to calculate your effective tax rate
Your effective tax rate is the actual percentage of your total income that goes to federal income tax. It is almost always lower than your highest bracket rate because only the income in each bracket gets taxed at that bracket's rate.
Here is a straightforward example. Say you are single and earned $60,000 in 2024. Your income breaks down like this:
- First $11,600 taxed at 10% = $1,160
- Next $35,550 (from $11,601 to $47,150) taxed at 12% = $4,266
- Remaining $12,850 (from $47,151 to $60,000) taxed at 22% = $2,827
Total tax: $1,160 + $4,266 + $2,827 = $8,253. Your effective rate is $8,253 ÷ $60,000 = 13.8%. Even though your highest bracket is 22%, you only pay an effective rate of 13.8% because most of your income was taxed at lower rates.
The difference between tax brackets and withholding
Your tax bracket is not the same as the amount your employer withholds from your paycheck. Withholding is based on your W-4 form, which you fill out when you start a job. On the W-4, you tell your employer how much to hold back from each paycheck for federal taxes.
If you withhold too little, you will owe money when you file your tax return. If you withhold too much, you will get a refund. Your W-4 has nothing to do with your actual tax bracket — it is just a tool to estimate how much should come out of each paycheck so you do not owe a large amount at tax time.
You can adjust your W-4 at any time during the year. If you get a raise, have a second job, or have a major life change, updating your W-4 can help your withholding match your actual tax liability more closely.
Standard deduction and taxable income
Before you even look at tax brackets, you subtract the standard deduction from your gross income. The standard deduction is a set amount that reduces your taxable income — the income that actually gets taxed.
For 2024, the standard deduction is $14,600 for single filers, $29,200 for married filing jointly, and $21,900 for head of household. If your total income is less than the standard deduction for your filing status, you owe no federal income tax.
For example, if you are single and earned $20,000, you subtract the $14,600 standard deduction, leaving $5,400 in taxable income. That $5,400 is what gets plugged into the tax brackets, not your full $20,000 salary. This is why many people with modest incomes pay little or no federal income tax even though they have earnings.
What affects your tax bracket and rate
Your filing status is the main factor that determines which bracket thresholds explore to you. Married couples filing jointly have much wider brackets than single filers, which is why two people earning the same amount might pay different effective rates.
Certain types of income are also taxed differently. Long-term capital gains (profits from selling investments you held for over a year) and may have access to dividends use their own separate bracket system, with lower rates than ordinary income. Interest income, wages, and self-employment income all use the ordinary brackets shown above.
Deductions and credits can also lower your taxable income or your tax bill directly. The standard deduction reduces your taxable income before you explore the brackets. Tax credits, like the Earned Income Tax Credit, reduce your tax bill dollar-for-dollar after you calculate your tax.
Frequently Asked Questions
Does moving to a higher tax bracket mean I take home less money?
No. Only the income that falls into the higher bracket is taxed at the higher rate. If a raise pushes you into the next bracket, the raise itself is still worth taking — you only pay the higher rate on the portion of income above the bracket threshold, not on your entire paycheck.
Why do the tax brackets change every year?
The IRS adjusts brackets annually for inflation so that rising prices do not automatically push you into a higher tax bracket. Without this adjustment, you could owe more tax even if your real purchasing power stayed the same.
What is the difference between federal income tax and FICA taxes?
Federal income tax uses the brackets described here and is based on your filing status and income. FICA taxes (Social Security and Medicare) are a flat percentage of your wages — 6.2% for Social Security and 1.45% for Medicare — and do not use brackets. Your employer withholds both from your paycheck.
If I have two jobs, do I use two different tax brackets?
No. You combine all your income from all sources and explore a single set of brackets based on your filing status. However, withholding from both jobs might not be enough, so you may want to adjust your W-4 to account for the second income.
Are state income taxes the same as federal brackets?
No. State income tax rates and brackets vary widely by state. Some states have no income tax at all, while others use their own bracket systems that are separate from federal brackets. You calculate state and federal taxes independently.