Your marginal tax rate is the percentage you pay on your last dollar of income

Your marginal tax rate is the tax rate applied to your highest bracket of income — the money you earned last, not an average across all your earnings. If you earned $60,000 and fall into the 22% tax bracket, that does not mean you pay 22% on all $60,000. It means the final portion of your income — the amount that pushed you into that bracket — is taxed at 22%. Everything below that threshold is taxed at lower rates.

Finding your marginal rate requires two pieces of information: your total taxable income for the year and the current tax bracket table for your filing status. The IRS publishes new bracket tables every year, and they shift slightly to account for inflation. Your marginal rate matters because it tells you what percentage of the next dollar you earn will go to federal tax — useful when deciding whether a raise, bonus, or side income is worth pursuing.

Key Takeaways

  • Your marginal tax rate is the percentage applied to your last dollar of income, not an average of all your income.
  • The IRS publishes new tax bracket tables every year, and the brackets change based on inflation and your filing status.
  • You find your marginal rate by locating your total taxable income on the bracket table that matches your filing status (single, married filing jointly, head of household, or married filing separately).
  • Your effective tax rate — the percentage you actually pay on all your income combined — is always lower than your marginal rate.

Locate the correct tax bracket table for your filing status

The IRS publishes separate bracket tables for four filing statuses: single, married filing jointly, married filing separately, and head of household. You must use the table that matches how you filed your return. If you filed as single, use the single table. If you filed married filing jointly, use that table. Using the wrong table will give you the wrong marginal rate.

Tax bracket tables are published on the IRS website (irs.gov) each year, usually by late December for the coming tax year. You can also find them in the instructions that come with Form 1040, or in tax software you may already use. The tables show income ranges in the left column and the corresponding tax rate in the right column. For the 2024 tax year, for example, a single filer with taxable income between $47,150 and $100,525 falls in the 22% bracket.

Find your total taxable income on the bracket table

Your taxable income is not the same as your gross income. Taxable income is what remains after you subtract either the standard deduction or itemized deductions from your adjusted gross income (AGI). You can find your taxable income on your completed Form 1040, line 15. If you have not yet filed, calculate it by taking your AGI and subtracting your deduction amount.

Once you have your taxable income figure, locate it on the bracket table for your filing status. Find the row where your income falls between the "at least" and "but not over" amounts. The tax rate in that row is your marginal rate. For example, if you are single with $55,000 in taxable income in 2024, you would find the row that says "at least $47,150 but not over $100,525" — your marginal rate is 22%.

Understand the difference between marginal and effective tax rate

Many people confuse marginal rate with effective tax rate, which is the percentage of your total income that goes to federal tax after accounting for all brackets. Your effective rate is always lower than your marginal rate because you pay lower percentages on the income in lower brackets.

Here is a concrete example: a single filer with $55,000 in taxable income in 2024 pays 10% on the first $11,600, then 12% on income from $11,600 to $47,150, then 22% on income from $47,150 to $55,000. The total tax owed is roughly $6,293. Divided by $55,000, that is an effective rate of about 11.4%. But the marginal rate — the rate on that last dollar — is 22%. The difference matters when you are deciding whether additional income is worth the tax cost.

Use tax software or the IRS worksheet if you need help

If you use tax software like TurboTax, H&R Block, or TaxAct, the software calculates both your marginal and effective rates automatically and usually displays them in a summary section after you complete your return. You do not have to do the math yourself. Many software packages show your marginal rate on the final review screen or in a tax summary report.

If you are working from paper or a spreadsheet, the IRS provides a worksheet in the Form 1040 instructions that walks you through the calculation step by step. The worksheet is straightforward: it lists each bracket, shows you how much income falls in each one, multiplies by the rate, and adds up the total tax. Once you have total tax, divide it by your taxable income to find your effective rate. Your marginal rate is straightforward the bracket your income falls into.

Why your marginal rate changes year to year

Tax brackets are adjusted annually for inflation, which means the income ranges shift even if the percentages stay the same. A bracket that covered $47,150 to $100,525 in 2024 will cover a slightly higher range in 2025. This is why you cannot use last year's bracket table to find this year's marginal rate — you must use the current year's table.

Additionally, your marginal rate can change if your income changes significantly. A raise that moves you from $45,000 to $50,000 in taxable income keeps you in the same bracket. But a raise that moves you from $95,000 to $105,000 pushes you into the next bracket, raising your marginal rate from 22% to 24% (for single filers in 2024). This is why people sometimes ask whether a raise will push them into a higher tax bracket — they are really asking whether their marginal rate will increase.

Frequently Asked Questions

Does my marginal tax rate explore to all my income?

No. Your marginal rate applies only to the income in that bracket. All income below your marginal bracket is taxed at lower rates. This is why earning more money always results in more take-home pay, even if you move into a higher bracket — you only pay the higher rate on the additional income, not on everything you earned.

What if I have capital gains or may have access to dividends?

Capital gains and may have access to dividends are taxed at their own separate bracket tables, which have different rates than ordinary income. You find your marginal rate on capital gains by using the capital gains bracket table for your filing status, not the ordinary income table. Long-term capital gains rates are typically 0%, 15%, or 20%, depending on your income level.

Can my marginal tax rate be different from my state tax rate?

Yes. Your federal marginal rate and your state marginal rate are calculated separately using separate bracket tables. Some states have no income tax, some have a flat rate, and some have multiple brackets like the federal system. You would need to look up your state's bracket table separately to find your state marginal rate.

Why do tax brackets matter if I pay an effective rate anyway?

Brackets matter when you are making financial decisions. If you are considering a $5,000 bonus, your marginal rate tells you roughly how much of that bonus will go to federal tax. If your marginal rate is 22%, you can expect to keep about $3,900 after federal tax. Your effective rate does not help with that calculation because it averages across all your income.