The starting point for federal income tax is your adjusted gross income, not your gross salary. The adjusted gross income guide explains every above-the-line deduction that reduces your AGI before brackets apply.
Federal Income Tax Calculator 2026
Estimate your 2026 federal income tax for any filing status: single, married filing jointly, or head of household. Uses IRS Rev. Proc. 2025-28 brackets and standard deductions. Shows bracket-by-bracket breakdown, marginal rate, and effective rate.
2026 Federal Income Tax Brackets: Single, Married, Head of Household
The 2026 federal income tax system uses seven progressive brackets ranging from 10% to 37%. These rates were made permanent by the One Big Beautiful Bill Act (OBBBA). Brackets apply to taxable income: gross income minus your standard or itemized deduction. Only the income within each bracket is taxed at that rate.
| Rate | Taxable income (single) | Tax on this bracket | Cumulative max tax |
|---|---|---|---|
| 10% | $0 to $11,925 | $1,192.50 | $1,192.50 |
| 12% | $11,926 to $48,475 | $4,385.88 | $5,578.38 |
| 22% | $48,476 to $103,350 | $12,074.78 | $17,653.16 |
| 24% | $103,351 to $197,300 | $22,551.60 | $40,204.76 |
| 32% | $197,301 to $250,525 | $17,031.36 | $57,236.12 |
| 35% | $250,526 to $626,350 | $131,572.40 | $188,808.52 |
| 37% | Above $626,350 | 37% on every dollar | , |
| Rate | Taxable income (MFJ) | Tax on this bracket |
|---|---|---|
| 10% | $0 to $23,850 | $2,385.00 |
| 12% | $23,851 to $96,950 | $8,771.88 |
| 22% | $96,951 to $206,700 | $24,145.78 |
| 24% | $206,701 to $394,600 | $45,096.00 |
| 32% | $394,601 to $501,050 | $34,063.36 |
| 35% | $501,051 to $751,600 | $87,692.00 |
| 37% | Above $751,600 | 37% on every dollar |
Source: IRS Revenue Procedure 2025-28. Brackets made permanent by the One Big Beautiful Bill Act (OBBBA). MFJ thresholds are exactly double the single thresholds.
2026 Standard Deduction: How Much Less Income Is Taxed
The standard deduction reduces your gross income before the tax brackets are applied. For most taxpayers it is the better choice over itemizing: with 2026 standard deductions at their highest ever levels, fewer than 15% of filers itemize per IRS data.
Single / Married Separately
Standard deduction 2026. Age 65+ adds $2,050. Blind adds another $2,050.
Married Filing Jointly
Standard deduction 2026. Age 65+ adds $1,650 per qualifying spouse. Blind adds $1,650 per.
Head of Household
Standard deduction 2026. $8,050 more than single. Age 65+ adds $2,050. Blind adds $2,050.
| Rate | Single taxable income | Head of Household taxable income | HoH advantage |
|---|---|---|---|
| 10% | $0 to $11,925 | $0 to $17,000 | $5,075 more at 10% |
| 12% | $11,926 to $48,475 | $17,001 to $64,850 | $16,375 more at 12% |
| 22% | $48,476 to $103,350 | $64,851 to $103,350 | Same upper threshold |
| 24%+ | Same as single above $103,350 | Same as single above $103,350 | Identical above 22% |
How to Calculate Federal Income Tax Step by Step: Worked Example
This is how the progressive tax system actually works on a $78,500 gross income for a single filer. Every bracket applies only to the income within that range: not to the entire salary.
Single filer: $78,500 gross salary, 2026
Should I Take the Standard Deduction or Itemize in 2026?
Itemizing only reduces your tax more than the standard deduction if your total itemized deductions exceed your standard deduction amount. With 2026 standard deductions at record highs, most workers benefit from the standard deduction.
| Taxpayer profile | Common itemized deductions | Typical total | Verdict |
|---|---|---|---|
| Renter, moderate income | Charitable donations $1,500, no mortgage | ~$1,500 | Standard deduction wins by $14,600 |
| Homeowner, $300K mortgage (3.5% rate) | Mortgage interest ~$9,800 + property tax $4,500 + donations $1,200 | ~$15,500 | Standard deduction still wins by $600 |
| Homeowner, $400K mortgage (5% rate) | Mortgage interest ~$18,500 + property tax $6,000 + donations $2,000 | ~$26,500 | Itemizing wins by $10,400 |
| High-tax state homeowner | Mortgage interest $22,000 + SALT cap $40,400 + donations $3,000 | ~$65,400 | Itemizing clearly wins |
Tax Liability vs Tax Owed: Why Your Refund or Bill Is Not Your Tax Rate
The most common point of confusion at tax filing time: tax liability is what you owe based on income and brackets. What you actually pay or receive at filing is the difference between your liability and what was already withheld from paychecks throughout the year.
| Scenario | Tax liability | Total withheld | At filing | Reason |
|---|---|---|---|---|
| W-4 set correctly | $8,641 | $8,641 | $0 owed / refund | Withholding matched liability |
| Claimed too many allowances | $8,641 | $6,200 | $2,441 owed | Under-withheld all year |
| Withheld conservatively | $8,641 | $10,500 | $1,859 refund | Over-withheld: interest-free loan to IRS |
| Freelance income added | $12,400 | $8,641 | $3,759 owed | Side income not withheld |
This calculator estimates your tax liability: not your refund or amount owed at filing. Your W-2 withholding amounts, estimated tax payments, and any credits determine whether you owe or receive a refund. To adjust withholding, use the W-4 form guide to update your payroll deductions mid-year.
Federal Income Tax Questions: How Much Will I Owe in 2026?
How much federal income tax do I pay on $40,000?
On $40,000 gross as a single filer with the $16,100 standard deduction, taxable income is $23,900. Federal income tax: 10% on first $11,925 = $1,192.50 plus 12% on remaining $11,975 = $1,437. Total federal income tax: $2,629.50. Effective federal tax rate: 6.6% of gross pay. FICA adds another $3,060 (7.65%). Total federal burden: $5,689.50.
How much federal income tax do I pay on $50,000?
On $50,000 gross as a single filer, taxable income after $16,100 standard deduction = $33,900. Federal income tax: 10% on $11,925 = $1,192.50, 12% on remaining $21,975 = $2,637. Total federal income tax: $3,829.50. Effective federal income tax rate: 7.7%. FICA: $3,825. Total federal burden: $7,654.50.
How much federal income tax do I pay on $60,000?
On $60,000 gross as a single filer, taxable income = $43,900. Federal income tax: 10% on $11,925 = $1,192.50, 12% on $23,200 = $2,784, 22% on remaining $8,775 = $1,930.50. Total federal income tax: $5,907. Effective federal rate: 9.85%. FICA: $4,590. Total: $10,497.
How much federal income tax do I pay on $75,000?
On $75,000 gross as a single filer, taxable income = $58,900. Federal income tax: 10% on $11,925 = $1,192.50, 12% on $23,200 = $2,784, 22% on $23,775 = $5,230.50. Total federal income tax: $9,207. Effective federal rate: 12.3%. FICA: $5,737.50. Total federal burden: $14,944.50.
How much federal income tax do I pay on $100,000?
On $100,000 gross as a single filer, taxable income = $83,900. Federal income tax: 10% on $11,925 = $1,192.50, 12% on $23,200 = $2,784, 22% on $44,725 = $9,839.50, 24% on $4,050 = $972. Total federal income tax: $14,788. Effective federal rate: 14.79%. FICA: $7,650. Total federal burden: $22,438.
What are the 2026 federal income tax brackets?
2026 federal brackets for single filers: 10% on taxable income up to $11,925. 12% from $11,926 to $48,475. 22% from $48,476 to $103,350. 24% from $103,351 to $197,300. 32% from $197,301 to $250,525. 35% from $250,526 to $626,350. 37% above $626,350. Standard deduction for single filers: $16,100. Source: IRS Revenue Procedure 2025-28.
What is the standard deduction for 2026?
The 2026 standard deduction is $16,100 for single filers and married filing separately. $32,200 for married filing jointly. $24,100 for head of household. An additional $2,000 standard deduction applies to taxpayers age 65 or older or blind (per IRS Rev. Proc. 2025-28). The standard deduction reduces your taxable income directly before any brackets are applied.
What is the difference between marginal and effective tax rate?
Marginal tax rate is the rate applied to your last dollar of income, the highest bracket you fall into. Effective tax rate is your total tax divided by gross income, your actual average rate. A single filer with $75,000 income is in the 22% marginal bracket, but their effective federal income tax rate is approximately 12.3%. Only the income above the 22% threshold ($48,475) is taxed at 22%. All income below that threshold is taxed at lower rates.