The federal income tax system uses brackets, not one flat rate

The federal government does not tax all your income at the same rate. Instead, your income is divided into tax brackets — ranges of income that are each taxed at a different percentage. The rate increases as your income goes up. This means if you earn $50,000, you do not pay the same percentage on every dollar as someone earning $150,000.

For 2024, there are seven federal tax brackets for single filers, ranging from 10% on the lowest income to 37% on the highest. The exact dollar amounts that define each bracket change every year because they are adjusted for inflation. Married couples filing jointly have different bracket ranges than single filers, and there are separate brackets for heads of household and married filing separately.

The rate you hear about most often — like "the top rate is 37%" — is called the marginal tax rate. It is the percentage you pay on your last dollar of income, not the percentage you pay on everything you earn. Your actual overall rate, called your effective tax rate, is almost always lower than your marginal rate.

Key Takeaways

  • Federal income tax uses seven brackets in 2024, ranging from 10% to 37%, and the dollar amounts for each bracket adjust yearly for inflation.
  • Your marginal rate is the percentage on your last dollar earned; your effective rate — what you actually pay overall — is lower because lower brackets are taxed at lower percentages.
  • Married couples filing jointly have wider brackets than single filers, meaning they can earn more before moving to the next tax rate.
  • Your actual tax owed also depends on deductions, credits, and whether you have income from sources other than wages.

How tax brackets actually work with an example

Suppose you are a single filer in 2024 earning $60,000. You do not pay 22% (the bracket your income falls into) on all $60,000. Instead, you pay 10% on the first portion of income, 12% on the next portion, and 22% only on the amount above a certain threshold. The IRS publishes the exact thresholds each year.

If the 12% bracket ends at $11,600 and the 22% bracket starts there, then on a $60,000 income you would pay 10% on roughly the first $11,600, then 12% on the next chunk, then 22% on everything above that threshold up to $60,000. Your total tax is the sum of what you owe in each bracket, not 22% of $60,000.

This is why moving into a higher bracket does not mean your entire paycheck is taxed at that higher rate. Only the income that falls into that bracket is taxed at that rate. Many people worry that earning more will push them into a higher bracket and leave them worse off — this is not how it works. Earning more always results in more take-home pay, even if some of it is taxed at a higher rate.

Standard deduction and taxable income

Before the tax brackets apply, you subtract the standard deduction from your total income. This is a fixed dollar amount the IRS lets you deduct without itemizing expenses. For 2024, the standard deduction is $14,600 for single filers and $29,200 for married couples filing jointly. These amounts also adjust yearly for inflation.

Your taxable income — the amount the brackets actually apply to — is your total income minus the standard deduction. If you earn $60,000 and the standard deduction is $14,600, your taxable income is $45,400. The tax brackets apply to that $45,400, not the full $60,000.

Some people can deduct more than the standard amount by itemizing deductions instead — mortgage interest, state and local taxes, charitable donations, and medical expenses above a certain threshold. Most people use the standard deduction because it is simpler and often results in a larger deduction.

Tax credits reduce what you owe directly

Tax credits are different from deductions. A deduction reduces your taxable income; a credit reduces the actual tax you owe, dollar for dollar. A $1,000 tax credit means you pay $1,000 less in federal income tax, regardless of your bracket.

Common federal tax credits include the Earned Income Tax Credit (EITC) for lower-income workers, the Child Tax Credit for parents, and the American Opportunity Credit for students. Some credits are refundable, meaning if the credit is larger than the tax you owe, the IRS sends you the difference. Others are non-refundable, meaning they can reduce your tax to zero but not below.

Your final tax bill depends on your income, which bracket you fall into, what deductions you take, and which credits you are may have access to to claim. This is why two people earning the same amount can owe very different amounts in federal income tax.

Self-employment and investment income

Wages from an employer are not the only income subject to federal tax brackets. Interest, dividends, capital gains, rental income, and self-employment income all count. Some types of income — like long-term capital gains and may have access to dividends — have their own separate, lower tax brackets. Others, like self-employment income, are taxed at the same rates as wages but also subject to an additional self-employment tax.

If you have income from multiple sources, you add them all together to determine your total income, then subtract the standard deduction, then apply the brackets. The type of income matters for some purposes — determining whether you owe self-employment tax, for instance — but for the basic federal income tax brackets, it all counts toward your total.

State and local taxes are separate

Federal income tax brackets apply only to your federal tax bill. Most states also have their own income tax with their own brackets, rates, and rules. Some states have no income tax at all. Your state tax is calculated separately and is not part of the federal brackets.

You can deduct state and local income taxes (up to $10,000 per year) on your federal return if you itemize deductions, but this does not change the federal brackets themselves. Your employer withholds federal tax, state tax (if applicable), and local tax (if applicable) from your paycheck separately.

Frequently Asked Questions

Does everyone pay federal income tax?

No. If your income is below the standard deduction for your filing status, you owe no federal income tax. For 2024, a single person earning less than $14,600 typically owes nothing. The threshold is higher for married couples and older adults. You may still want to file a return to claim refundable credits.

Why do my paychecks show federal tax withheld if I might get a refund?

Your employer withholds an estimated amount of federal tax from each paycheck based on a form you fill out (the W-4). This is a prepayment toward your annual tax bill. If too much is withheld, you get a refund when you file. If too little is withheld, you owe when you file. The withholding is not the same as your actual tax bill.

What is the difference between a tax bracket and a tax rate?

A tax bracket is a range of income taxed at a specific rate. A tax rate is the percentage applied to income in that bracket. The 22% bracket for single filers in 2024 applies to income between roughly $11,600 and $47,150. Your marginal rate is the rate of the bracket your last dollar falls into; your effective rate is your total tax divided by your total income.

If I earn more money, will I end up paying more in taxes?

Yes, always. Earning more income means you pay more in federal income tax because the additional income is taxed at your marginal rate. However, you keep the rest of the additional income after tax. Moving to a higher bracket never results in less take-home pay overall.