US Income Tax Calculator 2025
Calculate your federal income tax, effective rate, and after-tax income using 2025 brackets.
Uses 2025 federal tax brackets and standard deductions.
Federal Tax Owed
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Taxable Income
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Effective Rate
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Marginal Rate
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After-tax Income
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Tax by Bracket
How US Income Tax Works
The United States levies a federal income tax on individuals, and the system is progressive, meaning higher portions of your income are taxed at higher rates. Rather than applying one flat percentage to everything you earn, the IRS divides your taxable income into slices called brackets. Each bracket has its own rate, and only the dollars that fall within that bracket are taxed at its rate. This is a critical distinction that many taxpayers misunderstand.
For example, if you are a single filer with $80,000 in taxable income, you do not pay 22% on the entire $80,000. Instead, the first $11,925 is taxed at 10%, the next slice from $11,926 to $48,475 is taxed at 12%, and only the remaining amount from $48,476 to $80,000 is taxed at 22%. The result is a blended average called your effective tax rate, which will always be lower than the highest bracket you reach (your marginal rate).
Before the bracket math begins, you reduce your gross income by subtracting allowable deductions. Most taxpayers claim the standard deduction, though some benefit more from itemizing. Pre-tax contributions to retirement accounts like a 401(k) and health savings accounts (HSAs) also reduce your taxable income before brackets are applied. Your paycheck withholding estimates these taxes throughout the year, and any over- or under-payment is reconciled when you file your return. Use our tax refund calculator to estimate whether you will owe or receive a refund at filing time.
2026 Federal Tax Brackets
The table below shows the seven federal income tax brackets for the 2026 tax year (filed in 2027). Bracket thresholds are adjusted annually for inflation. Head of Household and Married Filing Separately brackets are available in IRS Revenue Procedure publications.
| Rate | Single Filers | Married Filing Jointly |
|---|---|---|
| 10% | $0 -- $11,925 | $0 -- $23,850 |
| 12% | $11,926 -- $48,475 | $23,851 -- $96,950 |
| 22% | $48,476 -- $103,350 | $96,951 -- $206,700 |
| 24% | $103,351 -- $197,300 | $206,701 -- $394,600 |
| 32% | $197,301 -- $250,525 | $394,601 -- $501,050 |
| 35% | $250,526 -- $626,350 | $501,051 -- $751,600 |
| 37% | Over $626,350 | Over $751,600 |
Key Tax Terms You Should Know
Adjusted Gross Income (AGI) is your total income from all sources (wages, investments, business income, retirement distributions) minus specific adjustments such as student loan interest, educator expenses, and contributions to a Traditional IRA. AGI appears on line 11 of Form 1040 and serves as the starting point for most tax calculations.
Modified Adjusted Gross Income (MAGI) is your AGI with certain deductions added back. MAGI determines eligibility for Roth IRA contributions, education credits, and the premium tax credit. The specific add-backs vary by provision, so the same taxpayer can have different MAGI figures for different purposes.
Standard Deduction is a fixed dollar amount the IRS lets you subtract from AGI before calculating tax. For 2026, the standard deduction is $15,000 (single), $30,000 (married filing jointly), and $22,500 (head of household). Taxpayers age 65 or older and those who are blind receive additional standard deduction amounts.
Itemized Deductions are specific expenses you can deduct instead of taking the standard deduction. Common itemized deductions include mortgage interest, state and local taxes (SALT, capped at $10,000), charitable contributions, and unreimbursed medical expenses exceeding 7.5% of AGI.
Marginal vs. Effective Tax Rate: Your marginal rate is the percentage applied to your last dollar of taxable income. Your effective rate is total tax divided by total taxable income. A single filer with $100,000 in taxable income has a 22% marginal rate but an effective rate of approximately 15.6%. Understanding the difference helps you evaluate the true cost of earning additional income or the true benefit of a deduction.
Tax Credits vs. Tax Deductions: A deduction reduces your taxable income, so its value depends on your marginal bracket. A $1,000 deduction saves $220 for someone in the 22% bracket. A tax credit, by contrast, reduces your tax bill dollar for dollar. A $1,000 credit saves exactly $1,000 regardless of your bracket. Some credits (like the Earned Income Tax Credit) are refundable, meaning they can generate a refund even if you owe no tax.
Standard Deduction vs. Itemized Deductions
About 87% of taxpayers claim the standard deduction because the Tax Cuts and Jobs Act of 2017 nearly doubled it. However, itemizing can still save money if your eligible expenses are large enough. Here is a side-by-side comparison to help you decide:
| Factor | Standard Deduction | Itemized Deductions |
|---|---|---|
| 2026 Amount (Single) | $15,000 flat | Varies by expenses |
| 2026 Amount (MFJ) | $30,000 flat | Varies by expenses |
| Effort Required | None -- automatic | Track receipts, file Schedule A |
| Common Eligible Expenses | N/A | Mortgage interest, SALT (up to $10,000), charity, medical (above 7.5% AGI) |
| Best For | Renters, low-deduction households | Homeowners with large mortgages, high-tax states, significant charitable giving |
| Audit Risk | Very low | Slightly higher -- keep documentation |
Tip: Even if you normally take the standard deduction, run the numbers both ways each year. A year with large medical bills, a home purchase, or significant charitable gifts could tip the balance toward itemizing.
Practical Examples
Scenario 1: Single filer earning $55,000 with no extra deductions
- AGI = $55,000 (no pre-tax contributions)
- Standard deduction: $15,000
- Taxable income: $55,000 - $15,000 = $40,000
- 10% on $11,925 = $1,192.50
- 12% on $28,075 ($11,926 to $40,000) = $3,369.00
- Total federal tax: $4,562 | Effective rate: 8.3% | Marginal rate: 12%
- After-tax income: $50,438
Scenario 2: Married couple filing jointly, $150,000 combined income, $23,500 in 401(k) contributions
- Gross income: $150,000
- Pre-tax 401(k): $23,500 (use our 401(k) calculator to optimize contributions)
- AGI: $150,000 - $23,500 = $126,500
- Standard deduction (MFJ): $30,000
- Taxable income: $126,500 - $30,000 = $96,500
- 10% on $23,850 = $2,385.00
- 12% on $73,100 ($23,851 to $96,950) = $8,772.00 (only $72,650 used since taxable income is $96,500)
- Total federal tax: $11,103 | Effective rate: 11.5% | Marginal rate: 12%
- The 401(k) contribution saved this couple approximately $2,820 in federal taxes
Scenario 3: Self-employed individual, $120,000 net business income
- Net self-employment income: $120,000 (use our self-employment tax calculator for the full picture)
- Self-employment tax deduction (half of SE tax): approximately $8,478
- AGI: $120,000 - $8,478 = $111,522
- Standard deduction (single): $15,000
- Taxable income: $111,522 - $15,000 = $96,522
- Bracket calculation: 10% + 12% + 22% portions
- Total federal income tax: approximately $15,373 | Effective rate: 15.9%
- Note: This person also owes approximately $16,956 in self-employment tax (Social Security + Medicare), bringing total federal tax to roughly $32,329
Tax-Saving Strategies for 2026
Reducing your taxable income is the most direct way to lower your federal tax bill. Here are the most impactful strategies available to most taxpayers:
Maximize 401(k) Contributions
The 2026 employee contribution limit is $23,500 ($31,000 if you are 50 or older). Every dollar contributed to a Traditional 401(k) reduces your taxable income dollar for dollar. At a 22% marginal rate, maxing out saves $5,170 in federal taxes alone. Plan your contributions using our 401(k) calculator.
Contribute to a Traditional or Roth IRA
The 2026 IRA contribution limit is $7,000 ($8,000 if age 50+). Traditional IRA contributions may be tax-deductible depending on your income and whether you have a workplace plan. Roth IRA contributions are not deductible but grow tax-free. Model both options with our IRA calculator to see which provides more lifetime value.
Fund a Health Savings Account (HSA)
If you have a high-deductible health plan, you can contribute up to $4,300 (individual) or $8,550 (family) to an HSA in 2026. HSA contributions are tax-deductible, growth is tax-free, and withdrawals for qualified medical expenses are also tax-free -- a rare triple tax advantage. Unused balances roll over indefinitely.
Charitable Contributions
Donating to qualified charities can lower your taxes if you itemize. Donating appreciated stock held over one year lets you deduct the full market value while avoiding capital gains tax on the appreciation. Bunching multiple years of donations into one year (or using a donor-advised fund) can push you over the itemization threshold.
Tax-Loss Harvesting
Selling investments at a loss can offset capital gains and up to $3,000 of ordinary income per year. Unused losses carry forward to future years. This strategy works best in taxable brokerage accounts -- it does not apply to IRAs or 401(k)s. Use our capital gains tax calculator to see how harvesting losses reduces your overall tax burden.
Flexible Spending Accounts (FSA)
A dependent care FSA lets you set aside up to $5,000 pre-tax for childcare expenses. A healthcare FSA allows up to $3,300 pre-tax for medical costs. Both reduce your taxable income, though FSA funds generally must be used within the plan year (some plans offer a $640 carryover or a 2.5-month grace period).
State Income Tax Overview
In addition to federal income tax, most Americans also owe state income tax. The rates and structures vary widely:
- No income tax (9 states): Alaska, Florida, Nevada, New Hampshire (interest/dividends only until recently phased out), South Dakota, Tennessee, Texas, Washington, and Wyoming. Residents of these states keep more of each paycheck, though other taxes (sales, property) may be higher.
- Flat-rate states: Several states use a single rate for all income levels. Examples include Arizona (2.5%), Colorado (4.4%), Illinois (4.95%), and North Carolina (4.5%).
- Progressive states: States like California (1% to 13.3%), New York (4% to 10.9%), and New Jersey (1.4% to 10.75%) use bracket systems similar to the federal structure.
- Local taxes: Some cities and counties add their own income taxes. New York City residents pay an additional 3.1% to 3.9%, and many Ohio municipalities levy local income taxes of 1% to 3%.
When estimating your total tax burden, always add your state and local taxes on top of the federal amount shown by this calculator. State taxes are deductible on your federal return if you itemize, but the SALT deduction is capped at $10,000. Use our paycheck calculator to see how federal and state taxes combine to affect your take-home pay.
Disclaimer: This calculator is for informational purposes only and does not constitute financial, tax, or legal advice. Tax laws change frequently, and individual circumstances vary. Always consult a qualified tax professional or CPA for decisions specific to your situation. The bracket thresholds shown reflect 2026 projections based on IRS inflation adjustments and may be updated when final figures are published.
Frequently Asked Questions
How do federal tax brackets work in 2026?
Federal income tax uses a progressive bracket system with seven rates: 10%, 12%, 22%, 24%, 32%, 35%, and 37%. Your income is divided into portions, and each portion is taxed at its own bracket rate. For example, a single filer earning $60,000 in taxable income pays 10% on the first $11,925, 12% on income from $11,926 to $48,475, and 22% on the remainder up to $60,000. Only the dollars within each bracket are taxed at that rate -- not your entire income. This is why your effective tax rate is always lower than your marginal rate, and why "moving into a higher bracket" does not mean all your income is taxed more.
What is the difference between marginal and effective tax rate?
Your marginal tax rate is the rate on your last dollar of taxable income -- determined by the highest bracket you reach. Your effective tax rate is the blended average you actually pay, calculated by dividing total tax owed by total taxable income. For instance, a single filer with $80,000 in taxable income has a 22% marginal rate, but their effective rate is roughly 13.5%. The gap exists because the first portions of income are taxed at lower 10% and 12% rates, pulling the overall average down significantly. When evaluating the value of a deduction, use your marginal rate to estimate savings.
Should I take the standard deduction or itemize in 2026?
Choose whichever gives you the larger deduction. The 2026 standard deduction is $15,000 for single filers, $30,000 for married filing jointly, and $22,500 for head of household. Itemizing makes sense when your combined mortgage interest, state and local taxes (SALT, capped at $10,000), charitable contributions, and medical expenses exceeding 7.5% of AGI surpass the standard amount. About 87% of taxpayers take the standard deduction since the 2017 tax reform nearly doubled it. Even if you normally take the standard deduction, run the comparison each year -- a year with large medical bills or a home purchase could change the math.
How does filing status affect my taxes?
Filing status sets both your standard deduction amount and the income thresholds for each tax bracket. Married filing jointly offers the widest brackets and the largest standard deduction ($30,000), typically resulting in the lowest combined tax for couples. Head of household provides wider brackets and a $22,500 deduction for qualifying single parents or caregivers who pay more than half the cost of maintaining a home. Married filing separately uses narrower brackets and is usually disadvantageous, though it can help when one spouse has significant medical expenses or income-driven student loan payments that benefit from a lower reported income.
How can I reduce my federal income tax?
The most effective strategies include maximizing pre-tax retirement contributions ($23,500 to a 401(k) in 2026, plus $7,500 catch-up if over 50), contributing to a Traditional IRA ($7,000 or $8,000 if over 50), and funding a Health Savings Account ($4,300 individual or $8,550 family). Charitable donations -- especially of appreciated stock -- can lower taxable income if you itemize. Tax-loss harvesting on investments offsets capital gains and up to $3,000 of ordinary income. Each dollar of pre-tax contributions reduces your taxable income dollar for dollar.
Do I have to pay state income tax on top of federal?
Most Americans pay both federal and state income tax, but nine states impose no income tax at all: Alaska, Florida, Nevada, New Hampshire, South Dakota, Tennessee, Texas, Washington, and Wyoming. Among states that do tax income, rates range from a flat 2.5% in Arizona to over 13% at the top bracket in California. State taxes are calculated separately with their own brackets, deductions, and credits. State income taxes are deductible on your federal return if you itemize, but the SALT deduction is capped at $10,000. Use our paycheck calculator to see how combined federal and state taxes affect your take-home pay.