How the 2025 US Federal Tax Brackets Work
The United States uses a progressive income tax system, which means different portions of your income are taxed at different rates. Moving into a higher bracket does not mean your entire income is taxed at that rate — only the income above each threshold is subject to the higher rate. This calculator shows exactly how much falls into each bracket so you can see your full federal tax picture for 2025.
Marginal Rate vs. Effective Rate
Two rates matter most when reviewing your tax liability:
- Marginal Tax Rate: The rate applied to the last dollar you earn — the highest bracket your income reaches. For example, if your taxable income is $75,000 filing single, your marginal rate is 22%, but only the portion above $48,475 is taxed at that rate.
- Effective Tax Rate: Your actual average rate — total federal tax owed divided by gross income. This is almost always lower than your marginal rate and gives a truer picture of your tax burden.
Standard Deduction for 2025
Most taxpayers take the standard deduction rather than itemizing. For 2025 the amounts are:
- Single: $15,000
- Married Filing Jointly: $30,000
- Head of Household: $22,500
The standard deduction reduces your taxable income before brackets are applied. Toggle it off in the calculator if you plan to itemize or want to see your tax on gross income directly.
2025 Federal Tax Bracket Rates
For the 2025 tax year (returns filed in 2026) the IRS has set seven brackets: 10%, 12%, 22%, 24%, 32%, 35%, and 37%. Thresholds are adjusted annually for inflation. The calculator above uses the official 2025 inflation-adjusted figures for all three filing statuses.
Important Limitations
This tool estimates federal income tax only. It does not account for state income taxes, the alternative minimum tax (AMT), self-employment taxes, investment income surtaxes, tax credits (such as the child tax credit or earned income credit), or other deductions beyond the standard deduction. For personalised guidance, consult a qualified tax professional or use IRS Free File.