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 last dollar you earned in a given year. It is not the same as your overall tax rate. If you earn $60,000 and fall into the 22% federal tax bracket, your marginal rate is 22%, but your actual tax bill is lower because earlier portions of your income are taxed at 10% and 12%.

Finding your marginal rate requires three pieces of information: your filing status (single, married filing jointly, head of household, or married filing separately), your total taxable income for the year, and the current federal tax bracket table. Once you know which bracket your income falls into, you have your marginal rate.

Key Takeaways

  • Your marginal tax rate depends on your filing status and total taxable income, which you can find on your tax return or pay stub.
  • The IRS publishes tax bracket tables every year that show which rate applies to each income range.
  • Your marginal rate is useful for estimating taxes on additional income or deciding whether a deduction saves you money.
  • State and local taxes have their own marginal rates, which you can find on your state revenue department's website.
  • Your marginal rate changes if your income changes or if tax brackets shift in a new year.

Locate your taxable income on your tax return

Start with your most recent tax return. On Form 1040 (the main federal income tax form), find the line labeled "Taxable Income" — this is the number you need. If you have not filed yet, you can estimate it by taking your gross income, subtracting any above-the-line deductions (like traditional IRA contributions or student loan interest), and then subtracting either the standard deduction or your itemized deductions, whichever is larger.

If you are still working in the current year and want to know your marginal rate before filing, add up your year-to-date income from your pay stubs and subtract the deductions you expect to claim. This gives you a working estimate. The exact number will shift if you receive a bonus, sell an investment, or have other income changes before year-end.

Match your income to the current federal tax bracket table

The IRS publishes new tax bracket tables every year. These tables show the income ranges for each tax rate (10%, 12%, 22%, 24%, 32%, 35%, and 37% for federal income tax). The brackets differ based on your filing status. A single filer with $60,000 in taxable income falls into a different bracket than a married couple filing jointly with the same income.

You can find the current year's brackets on the IRS website under "Tax Brackets and Rates" or on your state revenue department's site. Look for the table that matches your filing status. Find the row where your taxable income falls, and the rate listed in that row is your marginal tax rate. For example, in 2024, a single filer with $60,000 in taxable income falls in the 22% bracket, so their marginal federal rate is 22%.

Account for state and local income taxes

Federal marginal rate is only part of the picture. Most states have their own income tax with their own bracket tables. Some cities also tax income. Your total marginal rate is the sum of all three if they explore to you.

Find your state's brackets on your state revenue department's website — search "[your state] income tax brackets" to locate it quickly. Some states use the same brackets every year; others adjust them annually for inflation. A few states (Alaska, Florida, Nevada, South Dakota, Tennessee, Texas, Washington, and Wyoming) have no state income tax, so your marginal rate there is zero. If you live in one of these states but work in another, you may owe tax to the state where you work, not where you live.

Use a tax bracket calculator if you prefer not to look up tables

Several free online calculators let you enter your income and filing status, and they return your marginal rate automatically. The IRS does not offer an official calculator, but reputable tax software companies and financial websites (including Investopedia, NerdWallet, and TurboTax) host free bracket calculators that pull current-year rates.

These calculators are useful for quick estimates, but they are only as accurate as the information you enter. If you are unsure whether you should count a particular income source or deduction, the calculator may give you the wrong answer. For complex situations — self-employment income, investment gains, or multiple states — a tax professional can give you a definitive answer.

Understand why your marginal rate matters

Your marginal rate tells you how much tax you will owe on the next dollar you earn. This is useful when you are deciding whether to take on extra work, claim a deduction, or make a charitable donation. If your marginal rate is 22%, a $1,000 deduction saves you $220 in federal tax. If you are offered a $5,000 bonus, you will owe roughly $1,100 in federal tax on it (22% of $5,000), though state and local taxes may add more.

Your marginal rate also helps you understand tax-advantaged accounts. Contributing to a traditional 401(k) or IRA reduces your taxable income dollar-for-dollar, which means the contribution saves you tax at your marginal rate. If your marginal rate is 24%, a $7,000 contribution saves you $1,680 in federal tax.

Check your rate again if your income or filing status changes

Tax brackets shift every year, usually upward to account for inflation. A raise that keeps you in the same bracket one year might push you into a higher one the next. Similarly, if you marry, divorce, or have a major change in income, your marginal rate will change. It is worth recalculating at the start of each tax year or whenever your situation shifts significantly.

If you are self-employed or have variable income, your marginal rate can swing from month to month. Tracking it quarterly helps you estimate your tax bill and avoid underpayment penalties. Many self-employed people use their marginal rate to decide how much to set aside from each payment.

Frequently Asked Questions

Is my marginal tax rate the same as my effective tax rate?

No. Your marginal rate is the tax on your last dollar of income. Your effective rate is your total tax bill divided by your total income — it is always lower because earlier portions of your income are taxed at lower rates. If you owe $10,000 on $60,000 of income, your effective rate is about 16.7%, but your marginal rate is 22%.

Do I need to know my marginal rate to file my taxes?

No. The IRS calculates your tax based on the bracket tables regardless of whether you know your marginal rate. Knowing it is useful for planning and understanding how taxes work, but it is not required to complete your return.

What if my income is right on the border between two tax brackets?

You use the bracket your income falls into. Tax brackets are ranges, not single numbers. If the 22% bracket covers $11,001 to $44,725 for single filers, any income from $11,001 to $44,725 is taxed at 22%. Income above $44,725 moves into the next bracket (24% in 2024).

Does my marginal rate change if I claim more deductions?

Yes, because deductions lower your taxable income. If you claim $5,000 in additional deductions, your taxable income drops by $5,000, which may move you into a lower bracket and lower your marginal rate. This is why large deductions (like mortgage interest or charitable donations) can be valuable — they can push you into a lower bracket.

Can I find my marginal rate on my W-2 or pay stub?

Your pay stub shows the federal tax withheld from your paycheck, but not your marginal rate. You have to calculate it yourself using your taxable income and the bracket table. Your employer uses your W-4 form to estimate withholding, but that is based on your expected annual income, not your actual marginal rate.