Income tax brackets are the income ranges the federal government uses to set your tax rate
The federal government does not tax all your income at the same rate. Instead, it divides income into brackets — ranges where each portion of your earnings is taxed at a different percentage. The brackets change every year because they are adjusted for inflation. Your tax bracket depends on your total income for the year and your filing status (single, married filing jointly, head of household, and so on).
The brackets themselves are published by the Internal Revenue Service (IRS) each January for that tax year. For example, the 2024 brackets are different from the 2023 brackets, and the 2025 brackets will differ again. You do not choose your bracket — it is determined by where your income falls when you file your return.
Key Takeaways
- The IRS publishes new tax brackets every January, adjusted for inflation, so the dollar amounts that define each bracket change year to year.
- Your bracket is determined by your filing status (single, married filing jointly, head of household, or married filing separately) and your total income for the year.
- You do not pay one flat rate on all your income; instead, each portion of your income is taxed at the rate for the bracket it falls into, starting from the lowest rate.
- The current federal tax system has seven brackets ranging from 10 percent to 37 percent, but the brackets and rates can change if Congress passes new tax law.
How the bracket system actually works
Many people think that if you fall into the 24 percent bracket, you pay 24 percent on all your income. That is not how it works. Instead, you pay the lowest rate on the first portion of your income, then the next rate on the next portion, and so on. This is called progressive taxation.
Here is a simplified example. Suppose the 2024 brackets for a single filer are 10 percent on income up to $11,000, then 12 percent on income from $11,001 to $44,725, then 22 percent above that. If you earned $50,000, you would pay 10 percent on the first $11,000, then 12 percent on the next $33,725, then 22 percent on the remaining $5,275. Your total tax is not 22 percent of $50,000; it is the sum of tax owed on each bracket.
The marginal tax rate is the rate you pay on your last dollar of income — in this example, 22 percent. The effective tax rate is your total tax divided by your total income, which is lower than your marginal rate. Understanding the difference matters because it affects how much of a raise or bonus actually reaches your pocket after taxes.
The seven federal tax brackets for 2024
The IRS sets seven federal income tax brackets. The rates are 10 percent, 12 percent, 22 percent, 24 percent, 32 percent, 35 percent, and 37 percent. The dollar amounts that define each bracket vary by filing status and are adjusted each year.
For a single filer in 2024, the brackets start at 10 percent for income up to $11,600, then step up through the higher rates as income increases, with the top 37 percent rate explore to income over $578,100. For married couples filing jointly, the income ranges are wider — the 37 percent rate does not kick in until income exceeds $693,750. Head of household filers have their own set of ranges, as do married couples filing separately.
These numbers change every year. The IRS typically announces the new brackets in late October or early November for the following tax year. If you are preparing your return, use the brackets for the year you are filing, not the current calendar year.
Why brackets change every year
The dollar amounts that define each bracket are adjusted annually for inflation. This adjustment is called bracket creep adjustment or indexing. Without it, inflation would push more of your income into higher brackets even if your real earning power had not changed, and you would owe more tax on the same purchasing power.
Congress sets the tax rates themselves (the percentages), but the IRS handles the annual dollar adjustments. The adjustment is based on the Consumer Price Index (CPI), which measures inflation. In years with high inflation, the brackets widen more; in years with low inflation, they widen less.
How to find the brackets for your filing status and year
The IRS publishes brackets on its official website, irs.gov, usually in a document called "2024 Tax Brackets and Standard Deduction Amounts" (or the year you are filing). You can also find them in the instructions that come with the tax form you file — typically Form 1040 and its schedules.
If you use tax software or file through a tax professional, the brackets are already built in. The software calculates your tax based on your income and filing status. You do not have to look up the brackets yourself unless you want to estimate your tax liability before filing.
To use the brackets yourself, add up your income for the year, determine your filing status, find the bracket table for that status, and locate the row where your income falls. That row shows the tax owed on each portion of your income.
State income tax brackets are separate from federal brackets
Most states that have an income tax use their own bracket system, separate from the federal brackets. Some states have a flat tax rate (the same percentage on all income), while others use brackets similar to the federal system. A few states have no income tax at all.
Your state tax is calculated independently of your federal tax. You may owe tax in multiple states if you lived in or worked in more than one state during the year. State brackets and rates are set by state legislatures and vary widely, so you will need to check your state's tax authority website for the brackets that explore to you.
What happens if Congress changes the tax law
The tax rates and bracket structure can change if Congress passes new legislation. The most recent major change was the Tax Cuts and Jobs Act of 2017, which set the current seven-bracket structure and rates. Some of those provisions are scheduled to expire after 2025 unless Congress extends them, which would change the brackets and rates again.
If you are planning finances or estimating taxes for future years, keep in mind that the brackets you see today may not explore in a few years. Tax professionals and financial advisors monitor proposed legislation and can help you understand how changes might affect you.
Frequently Asked Questions
If I am in the 24 percent bracket, do I pay 24 percent on all my income?
No. The 24 percent rate applies only to the portion of your income that falls in that bracket. Income below that bracket is taxed at the lower rates for those brackets. Your effective tax rate — the percentage of your total income that goes to taxes — is always lower than your marginal bracket rate.
Do I need to recalculate my taxes if the brackets change?
No. Tax software and tax professionals automatically use the current year's brackets when they calculate your return. If you are estimating your taxes yourself, you should use the brackets for the year you are filing, which the IRS publishes by January of that year.
Are the brackets the same for everyone?
The tax rates are the same for everyone, but the dollar amounts that define each bracket depend on your filing status. Single filers, married couples filing jointly, heads of household, and married couples filing separately each have different bracket ranges for the same year.
What is the difference between my marginal rate and my effective rate?
Your marginal rate is the tax rate on your last dollar of income — the bracket your highest income falls into. Your effective rate is your total tax divided by your total income. Because of the progressive bracket system, your effective rate is always lower than your marginal rate.
Where can I find the brackets for the year I am filing?
The IRS publishes brackets on irs.gov, usually in a document titled with the tax year and "Tax Brackets." You can also find them in the instructions for Form 1040 or by searching "IRS tax brackets [year]." Tax software includes the correct brackets automatically.