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 income bracket — the percentage you would pay on one more dollar earned. It is not the same as your overall tax rate. If you earn $60,000 and fall into the 22% bracket, your marginal rate is 22%, but your actual tax bill is lower because earlier dollars were taxed at 10% and 12%. The IRS publishes tax brackets every year, and finding your marginal rate takes minutes once you know your taxable income.

The federal tax system uses seven brackets for 2024, ranging from 10% to 37%. Your bracket depends on your filing status (single, married filing jointly, head of household, or married filing separately) and your taxable income after deductions. State and local taxes have their own brackets, so your total marginal rate may be higher than the federal number alone.

Key Takeaways

  • Marginal tax rate is the percentage applied to your last dollar of income, not your average rate across all income.
  • The IRS publishes federal tax brackets by filing status each year, and you find your bracket by locating your taxable income on the correct table.
  • Your marginal rate is useful for deciding whether a raise, bonus, or deduction is worth the tax cost, but it does not determine your total tax bill.
  • State and local taxes have separate brackets, so add those percentages to your federal marginal rate for your true total marginal rate.

Find your taxable income first

Before you can find your bracket, you need your taxable income — not your gross income. Taxable income is what remains after you subtract either the standard deduction or your itemized deductions from your adjusted gross income (AGI). For 2024, the standard deduction is $14,600 for single filers, $29,200 for married filing jointly, $21,900 for head of household, and $14,600 for married filing separately. If you itemize instead, use the total of your itemized deductions.

If you filed a tax return last year, your taxable income appears on line 15 of Form 1040. If you have not filed yet, add up your income sources (wages, self-employment, interest, dividends, capital gains), subtract any above-the-line deductions (like half of self-employment tax or student loan interest), then subtract either the standard deduction or your itemized deductions. The result is your taxable income.

Match your income to the 2024 federal tax brackets

The IRS publishes tax brackets in tables organized by filing status. Find the table that matches your status, then locate the row where your taxable income falls. The percentage in that row is your federal marginal tax rate.

For single filers in 2024, the brackets are: 10% on income up to $11,600; 12% from $11,601 to $47,150; 22% from $47,151 to $100,525; 24% from $100,526 to $191,950; 32% from $191,951 to $243,725; 35% from $243,726 to $609,350; and 37% on income above $609,350. For married filing jointly, the ranges are roughly double. For example, the 22% bracket runs from $47,151 to $100,525 for single filers but from $94,301 to $201,050 for married filing jointly.

If your taxable income is $65,000 and you file as single, you fall into the 22% bracket (because $65,000 falls between $47,151 and $100,525). Your marginal tax rate is 22%. This does not mean you pay 22% on all your income — you pay 10% on the first $11,600, 12% on income from $11,601 to $47,150, and 22% only on income from $47,151 to $65,000.

Account for state and local taxes

Your federal marginal rate is only part of the story. Most states have their own income tax with their own brackets, and some cities do as well. Your total marginal tax rate is your federal rate plus your state rate plus any local rate that applies to you.

State brackets vary widely. California's top marginal rate is 13.3%, while Texas has no state income tax. Some states use a flat rate (like Illinois at 4.95%), while others use brackets similar to the federal system. Look up your state's tax brackets on your state revenue or taxation department website. If you live in a city with local income tax — such as New York City, Columbus, or Philadelphia — add that rate as well. Your total marginal rate might be 22% federal plus 5% state plus 1% local, for a combined 28% marginal rate.

Why your marginal rate matters for financial decisions

Knowing your marginal rate helps you evaluate whether a financial move makes sense. If you are offered a $5,000 bonus and your marginal rate is 24%, you will owe roughly $1,200 in federal tax on that bonus (plus state and local taxes). The bonus is still worth $3,800 after tax, but you now know the true cost.

The same logic applies to deductions. If you can deduct $1,000 in charitable donations and your marginal rate is 22%, that deduction saves you roughly $220 in federal tax. A tax credit, by contrast, reduces your tax bill dollar-for-dollar regardless of your marginal rate, which is why credits are usually more valuable than deductions of the same amount.

Marginal rate also matters for retirement planning. If you contribute $7,000 to a traditional IRA, you reduce your taxable income by $7,000. At a 24% marginal rate, that saves you roughly $1,680 in federal tax. At a 12% marginal rate, it saves you roughly $840. The higher your marginal rate, the more valuable the deduction.

The difference between marginal rate and effective rate

Your effective tax rate is your total tax bill divided by your total income. If you earn $65,000, owe $8,500 in federal tax, your effective rate is about 13%. Your marginal rate (22% in this example) is always higher than your effective rate because you pay lower rates on your first dollars of income.

This distinction matters because people sometimes confuse the two. A raise that pushes you into a higher bracket does not mean your entire income is taxed at the new rate — only the income above the bracket threshold. If you earn $100,000 at a 22% marginal rate and receive a $10,000 raise, you do not suddenly pay 24% on all $110,000. You pay 22% on the first $100,000 and 24% on the $10,000 raise. Your effective rate rises slightly, but your previous income is unaffected.

Frequently Asked Questions

Does my marginal tax rate change if I get a raise?

Only if the raise pushes your taxable income into a higher bracket. A $2,000 raise might keep you in the same bracket, so your marginal rate stays the same. A $50,000 raise could move you into a higher bracket. Either way, the raise is still income — you do not lose money by earning more, because only the new income above the bracket threshold is taxed at the higher rate.

How do I find my marginal rate if I am self-employed?

Calculate your net self-employment income, subtract half of your self-employment tax, then add that to any other income. Subtract the standard deduction or itemized deductions to get taxable income. Then use the same federal tax bracket tables as any other filer. Self-employment tax itself (Social Security and Medicare) is separate from income tax and has its own rate of 15.3% on net earnings.

What if my income changes during the year?

Your marginal rate is based on your total taxable income for the full year, not your income at any one moment. If you earn $40,000 in the first half of the year and $30,000 in the second half, your marginal rate is based on $70,000 total. Estimate your year-end income as accurately as you can, then adjust your withholding or estimated tax payments if needed to avoid a large bill or refund at tax time.

Does the child tax credit affect my marginal rate?

No. Tax credits reduce your tax bill directly but do not change your marginal rate or your bracket. A $2,000 child tax credit lowers your tax by $2,000 regardless of your income level. Deductions, by contrast, reduce your taxable income and can affect which bracket you fall into.