Federal income tax rates are set by tax brackets, not a single percentage

The U.S. federal government does not charge everyone the same percentage of their income in taxes. Instead, your income is divided into brackets, and each bracket has its own tax rate. The more you earn, the higher the bracket you enter—but only the money in that bracket gets taxed at the higher rate. This system is called progressive taxation.

For 2024, there are seven federal tax brackets for single filers, ranging from 10% on the lowest income to 37% on the highest. A married couple filing jointly has the same seven brackets but with higher income thresholds. The brackets change slightly each year to account for inflation.

Understanding how brackets work prevents a common mistake: many people think moving into a higher bracket means all their income gets taxed at that rate. It does not. Only the portion of income that falls within each bracket is taxed at that bracket's rate.

Key Takeaways

  • Federal tax brackets range from 10% to 37%, and your income is taxed at different rates depending on which bracket each portion falls into.
  • The 2024 brackets differ for single filers, married couples filing jointly, and heads of household, and they shift upward each year for inflation.
  • Your effective tax rate—the percentage of your total income you actually pay in federal tax—is always lower than your highest bracket rate.
  • State and local income taxes are separate from federal rates and vary widely depending on where you live.
  • Self-employed people pay both the employee and employer portions of Social Security and Medicare taxes, which adds roughly 15.3% on top of income tax.

The 2024 federal tax brackets for single filers

If you file as a single person, your income falls into one of these seven brackets for 2024. The first bracket starts at $0 and goes up to $11,600, taxed at 10%. The second bracket covers income from $11,601 to $47,150, taxed at 12%. Each bracket continues upward until the highest bracket, which covers all income over $578,100 and is taxed at 37%.

Here is how this works in practice: suppose you earned $60,000 in 2024. The first $11,600 is taxed at 10% (that is $1,160). The next $35,550 (from $11,601 to $47,150) is taxed at 12% (that is $4,266). The remaining $12,850 (from $47,151 to $60,000) is taxed at 22% (that is $2,827). Your total federal income tax is $8,253, which is about 13.8% of your income—your effective rate. You never paid 22% on all your income, only on the portion that fell in that bracket.

The brackets for married couples filing jointly are roughly double the single filer thresholds, and heads of household fall somewhere in between. The IRS publishes updated brackets each January, so if your income changes significantly from year to year, your bracket may shift.

How tax brackets changed from 2023 to 2024

Every year, the IRS adjusts tax brackets upward to account for inflation. From 2023 to 2024, most brackets shifted up by about 3.8%. For a single filer, the 10% bracket went from $11,000 to $11,600, and the 37% bracket threshold moved from $578,100 to $578,100. These adjustments mean you can earn slightly more before moving into a higher bracket.

This annual adjustment is called bracket creep prevention. Without it, inflation alone would push people into higher brackets even if their real income (what they can actually buy) stayed the same. The adjustment keeps the system roughly fair year to year, though the exact percentage varies depending on inflation rates.

Standard deduction and how it reduces your taxable income

Before your income is sorted into brackets, you subtract the standard deduction. This is a fixed amount the government lets you deduct from your income without having to prove expenses. For 2024, the standard deduction is $14,600 for single filers and $29,200 for married couples filing jointly. If you are 65 or older, you get an additional deduction of $1,850 (single) or $1,500 per spouse (married).

This means if you earned $60,000 as a single filer, you would subtract $14,600 first, leaving $45,400 in taxable income. That $45,400 is what gets sorted into brackets, not the full $60,000. Many people with lower incomes owe no federal income tax at all because their income does not exceed the standard deduction.

Some people itemize deductions instead of taking the standard deduction—meaning they add up mortgage interest, charitable donations, state and local taxes, and other expenses. Itemizing only makes sense if your total deductions exceed the standard deduction, which happens less often than it used to.

State and local income taxes work separately from federal rates

Federal income tax is only part of what you owe. Most states also charge income tax, and some cities do too. State rates vary widely: some states have no income tax at all (including Texas, Florida, and Wyoming), while others charge rates as high as 13% (California). Your state's brackets and deductions are usually different from the federal system.

A few states—like Illinois and Massachusetts—have a flat tax rate that applies to all income, rather than brackets. Others use brackets similar to the federal system but with different thresholds and rates. Some states tax only certain types of income, like dividends or capital gains, while leaving wages untaxed.

Local income taxes are less common but do exist in some cities and counties, particularly in Ohio, Pennsylvania, and Kentucky. These are typically small percentages (1% to 3%) added on top of state and federal taxes. Your total tax burden depends on where you live, not just your federal bracket.

Self-employment tax on top of income tax

If you are self-employed, you pay both the employee and employer portions of Social Security and Medicare taxes. Employees see these deducted from their paychecks (7.65% combined), but employers pay the other 7.65% invisibly. Self-employed people pay both halves, totaling 15.3% on net self-employment income, though you can deduct half of it when calculating your adjusted gross income.

This self-employment tax is separate from income tax and applies to all self-employment income above $400 per year. A self-employed person earning $60,000 would owe roughly $8,500 in self-employment tax alone, plus federal income tax on top of that. This is why self-employed people often set aside 25% to 30% of their income for taxes.

You calculate self-employment tax on Schedule SE and report it on your tax return. The IRS provides worksheets to help you figure out how much to set aside quarterly, which most self-employed people do to avoid a large bill at tax time.

How credits and deductions lower your actual tax bill

Tax brackets tell you the rate applied to your income, but your actual bill depends on credits and deductions too. A deduction reduces the income that gets taxed—like the standard deduction or mortgage interest. A credit reduces the tax itself, dollar for dollar. A $1,000 credit saves you $1,000 in taxes; a $1,000 deduction saves you whatever your tax rate is on that $1,000.

Common credits include the Earned Income Tax Credit (for lower-income workers), the Child Tax Credit ($2,000 per child under 17), and education credits like the American Opportunity Credit. Some credits are refundable, meaning if the credit is larger than your tax bill, you get the difference back as a refund. Others are nonrefundable and can only reduce your bill to zero.

This is why two people in the same tax bracket can owe very different amounts. One person might have no credits and pay the full bracket rate on their income. Another might have children, education expenses, or other credits that cut their bill significantly. Your actual tax depends on your full situation, not just which bracket you are in.

Frequently Asked Questions

If I move to a higher tax bracket, do I pay that rate on all my income?

No. Only the income that falls within that bracket is taxed at that rate. If you earn $60,000 and move from the 12% bracket to the 22% bracket, only the portion of your income above the 12% threshold is taxed at 22%. The rest stays at 12% or lower. This is why your effective tax rate (total tax divided by total income) is always lower than your highest bracket rate.

Why do tax brackets change every year?

The IRS adjusts brackets annually to account for inflation. Without these adjustments, inflation alone would push people into higher brackets even if their real income stayed the same. The adjustment amount varies each year based on the inflation rate from the previous year.

Do I have to pay federal income tax if I earn below the standard deduction?

Usually not. If your income is below the standard deduction for your filing status, you generally owe no federal income tax. For 2024, that means single filers earning under $14,600 and married couples earning under $29,200 typically owe nothing. However, self-employed people may owe self-employment tax even if they owe no income tax.

How is capital gains tax different from income tax brackets?

Long-term capital gains (profits from investments held over a year) are taxed at lower rates than ordinary income: 0%, 15%, or 20% depending on your income level. These rates are separate from the ordinary income brackets. Short-term capital gains (held under a year) are taxed as ordinary income at your regular bracket rate.

What is the difference between my tax bracket and my effective tax rate?

Your tax bracket is the rate applied to your last dollar of income. Your effective tax rate is your total tax divided by your total income. For someone earning $60,000 with a 22% bracket, the effective rate might be 13.8%. The effective rate is always lower because lower brackets explore to the first portions of your income.