The highest federal tax bracket is 37%, and it applies to income above a certain threshold that changes each year

The top federal income tax bracket is 37 percent. This is the rate you pay on income that falls into the highest tier of the seven-bracket system the IRS uses. For 2024, that threshold is $191,950 for single filers and $383,900 for married couples filing jointly. These numbers shift annually based on inflation.

A critical misunderstanding: reaching the highest bracket does not mean all your income is taxed at 37 percent. The U.S. tax system is progressive, meaning you pay different rates on different portions of your income. Only the dollars that land in the top bracket face the 37 percent rate. Everything below that threshold is taxed at the lower rates that apply to each bracket below it.

For example, a single filer earning $250,000 in 2024 does not pay 37 percent on all $250,000. They pay the applicable rate on income from $0 to roughly $11,600, then a higher rate on the next chunk, and so on, until only the income above $191,950 is taxed at 37 percent.

Key Takeaways

  • The top federal tax bracket rate is 37 percent, but this rate applies only to income above the threshold for that year, not to your entire income.
  • Tax bracket thresholds change annually and differ based on filing status: single, married filing jointly, married filing separately, and head of household.
  • Your effective tax rate — the percentage of your total income paid in federal tax — is always lower than your marginal rate because of how brackets stack.
  • State income taxes operate on separate bracket systems and have their own top rates, which vary widely by state.

How the seven federal brackets stack

The IRS divides income into seven tiers. As of 2024, for single filers, those brackets are 10%, 12%, 22%, 24%, 32%, 35%, and 37%. Each bracket applies to a specific range of income. When your income crosses into a new bracket, only the portion in that bracket is taxed at the new rate.

The bracket thresholds are adjusted each year for inflation. The IRS publishes updated thresholds in late 2023 for the following tax year. If you file taxes in April 2025, you use 2024 thresholds. The thresholds for married couples filing jointly are roughly double those for single filers, and head-of-household filers have their own separate thresholds that fall between the two.

Your marginal tax rate is the rate that applies to your last dollar of income — the bracket you are currently in. Your effective tax rate is your total federal tax divided by your total income. For most people, the effective rate is significantly lower than the marginal rate because most of their income was taxed at lower rates.

Why your effective rate is lower than the top bracket

Suppose you are a single filer with $200,000 in taxable income in 2024. Your marginal rate is 37 percent because some of your income falls in that bracket. But you do not pay 37 percent on all $200,000. You pay 10 percent on the first chunk, 12 percent on the next, and so on, until only the final $8,050 (the amount above $191,950) is taxed at 37 percent.

When you add up the tax owed on each bracket, your total federal tax is roughly $47,000. Divide that by $200,000, and your effective rate is about 23.5 percent — far below the 37 percent marginal rate. This is why people in the top bracket still pay a lower percentage of their income than the headline rate suggests.

State tax brackets are separate and vary widely

Federal tax brackets are only part of the picture. Most states also impose income tax with their own bracket systems and top rates. Nine states have no income tax at all: Alaska, Florida, Nevada, South Dakota, Tennessee, Texas, Washington, Wyoming, and New Hampshire (which taxes only dividends and interest income).

In states that do tax income, the top bracket rates range from around 5 percent to over 13 percent. California, New York, and Oregon have some of the highest top state rates. These state brackets have their own thresholds and are calculated separately from federal brackets. Your state tax bill is independent of your federal bracket, though some states allow you to deduct federal taxes paid when calculating state tax.

How bracket thresholds change year to year

The IRS adjusts bracket thresholds annually to account for inflation. In years with higher inflation, the thresholds move up more noticeably. This prevents bracket creep, where inflation pushes you into a higher bracket without any real increase in purchasing power.

For example, if inflation is 3 percent in a given year, the bracket thresholds typically increase by roughly 3 percent as well. This means you need to earn about 3 percent more to reach the next bracket. The IRS publishes the new thresholds in October or November for the following tax year, and they appear in tax forms and instructions released in late December or early January.

What income counts toward your bracket

Your bracket is determined by your taxable income, not your gross income. Taxable income is what remains after you subtract deductions. If you take the standard deduction (which most people do), that amount is subtracted from your gross income before you calculate which bracket you fall into.

For 2024, the standard deduction is $14,600 for single filers and $29,200 for married couples filing jointly. If you earn $206,550 as a single filer, your taxable income is $191,950 ($206,550 minus $14,600), which puts you right at the threshold of the top bracket. Deductions, retirement contributions, and certain other adjustments all reduce the income that actually gets bracketed.

Frequently Asked Questions

Does being in the 37% bracket mean I pay 37% on all my income?

No. The 37 percent rate applies only to income above the threshold for that year. All income below the threshold is taxed at the lower rates of the brackets it falls into. Your overall tax rate on all your income is your effective rate, which is always lower than your marginal rate.

What is the difference between marginal and effective tax rate?

Your marginal rate is the tax rate on your last dollar of income — the bracket you are currently in. Your effective rate is your total tax bill divided by your total income. For someone in the top bracket, the effective rate is typically 10 to 15 percentage points lower than the marginal rate.

Do state taxes use the same brackets as federal taxes?

No. States that tax income have their own separate bracket systems with different thresholds and rates. Federal and state brackets are calculated independently. Some states allow you to deduct federal taxes when calculating state tax, but the brackets themselves are not linked.

When do tax bracket thresholds change?

The IRS adjusts thresholds annually for inflation, usually in October or November for the following tax year. The new thresholds appear in tax forms and instructions released in late December or early January. The adjustment is based on the inflation rate for the prior year.

How do deductions affect which bracket I am in?

Deductions reduce your taxable income, which can lower the bracket you fall into. If you take the standard deduction, that amount is subtracted from your gross income first. Retirement contributions, business expenses, and other deductions also reduce taxable income before brackets are applied.