Marginal Tax Rate in the US Explained, With 2026 Brackets and Examples
Last updated: October 2026
The short answer: your marginal tax rate is the rate on your next dollar of taxable income, not on all of it. The United States taxes income in layers called brackets, so earning more can never leave you with less after federal income tax. In 2026 a single filer's rates run from 10% to 37%. Most people's average rate is far lower than their top bracket. The sections below show exactly how it works.
What is a marginal tax rate?
The word "marginal" means "at the edge." Your marginal rate is the tax you'd pay on one additional dollar of taxable income. Because the US tax system is progressive, each slice of your income is taxed at its own rate, and only the slice that falls inside a bracket gets that bracket's rate. If you want to understand which income the brackets actually apply to, start with what is taxable income.
2026 federal tax brackets
These figures come straight from the IRS's tax year 2026 inflation adjustments, and they apply to returns filed in 2027.
| Rate | Single filers (taxable income over) | Married filing jointly (over) |
|---|---|---|
| 10% | $0 | $0 |
| 12% | $12,400 | $24,800 |
| 22% | $50,400 | $100,800 |
| 24% | $105,700 | $211,400 |
| 32% | $201,775 | $403,550 |
| 35% | $256,225 | $512,450 |
| 37% | $640,600 | $768,700 |
These thresholds apply to taxable income, meaning what's left after the standard deduction, which is $16,100 for single filers and $32,200 for married couples filing jointly in 2026.
How to calculate your tax, step by step
Say you're single and your taxable income is $52,900. The tax is built in layers:
- The first $12,400 at 10% = $1,240
- The next $38,000 (from $12,400 to $50,400) at 12% = $4,560
- The last $2,500 (from $50,400 to $52,900) at 22% = $550
Add them up and your federal income tax is $6,350. Your marginal rate is 22%, since that's what your next dollar would face. Your effective rate is $6,350 ÷ $52,900 = 12%. And measured against a $75,000 salary, it's even lower, about 8.5%.
A married couple's example
A married couple filing jointly with $100,000 of taxable income pays 10% on the first $24,800 ($2,480) and 12% on the remaining $75,200 ($9,024). The total is $11,504. Their marginal rate is 12% and their effective rate is about 11.5%. They're just below the $100,800 point where the 22% rate begins.
The myth: "A raise will push me into a higher bracket and I'll earn less"
Let's test it. You're single with taxable income of $49,900 and get a $3,000 raise. The first $500 fills the rest of the 12% bracket and costs $60 in tax. The remaining $2,500 is taxed at 22%, which is $550. Total extra federal income tax: $610, so you keep $2,390 before payroll taxes.
Only the part above the threshold is taxed at the higher rate. Crossing a bracket never reduces your total after-tax income. The cases that can cause real "cliffs" are credits and benefits that phase out at certain income levels, and that's a separate issue from the tax brackets.
Marginal vs effective tax rate
Marginal rate: the tax on your next dollar. Use it for decisions about raises, overtime, side income and deductions. Effective rate: your total tax divided by your income. Use it to see your overall burden. People mix these up all the time, which is why the headline "37% top rate" confuses so many readers. In 2026, you only pay 37% on the part of a single filer's taxable income above $640,600.
Don't forget payroll tax and state tax
The federal brackets are only part of what comes out of extra pay. Social Security takes 6.2% and Medicare 1.45% of wages, which together equal 7.65%, and your state may add its own tax. For a worker in the 22% bracket with no state income tax, the combined marginal rate on extra wages is about 29.65%. In the 12% bracket it's about 19.65%. That's why a raise or overtime never feels like its full value. Our pay raise calculator shows how much of a raise you keep, and what is FICA tax explains the payroll piece.
Why your marginal rate matters for decisions
- Pre-tax retirement contributions. Every dollar into a traditional 401(k) saves tax at your marginal rate. At 22%, $5,000 saves $1,100. At 12% it saves $600.
- Side income. Freelance earnings stack on top of your salary, so they start at your marginal rate, plus self-employment tax (see the self-employed tax calculator).
- Roth vs traditional. If you expect a higher bracket in retirement, paying tax now with a Roth can make sense. If you expect a lower one, traditional often wins.
- Bonuses. A bonus is taxed at your marginal rate in the end, even if the employer withholds a flat 22%. The bonus tax calculator shows both sides.
Does withholding use my marginal rate?
Not exactly. Employers estimate your tax using your Form W-4 and IRS tables, then spread it across your paychecks. The final bill is settled when you file. Read federal income tax withholding and how paycheck taxes work for the full process, or test your own salary in the US paycheck calculator.
Frequently asked questions
What is my marginal tax rate? Find your taxable income, then look at which bracket its last dollar falls in. For a single filer with $52,900 of taxable income, it's 22%.
Is my whole income taxed at my highest rate? No. Only the part of your income above each threshold is taxed at that bracket's rate.
Can a raise reduce my take-home pay? Not because of tax brackets. You always keep part of every extra dollar.
Do capital gains use the same brackets? Long-term gains and qualified dividends have their own rates, though they still stack on top of ordinary income.
Written by Muhammad Tabish. Brackets and standard deductions are taken from the IRS tax year 2026 inflation adjustments (IR-2025-103) and checked in October 2026. Examples are for federal income tax only. This is general information, not tax advice.