2026 Federal Income Tax Brackets

What Counts as Federal Taxable Income

Federal brackets apply to taxable income, not gross pay. Taxable income starts from total income reported on Form 1040, then subtracts adjustments (above-the-line deductions), then the standard or itemized deduction. The schedules above show only the final bracket step.

Wages and Self-Employment Income

W-2 wages, bonuses, and tips are ordinary income taxed through the bracket schedule after deductions. Self-employment profit is also ordinary income, but it is reported on Schedule C and may face SECA payroll tax in addition to income tax. Half of SECA is deductible above the line, which lowers AGI before brackets run.

Interest, Dividends, and Capital Gains

Most interest and short-term capital gains stack on top of wages at ordinary bracket rates. Qualified dividends and long-term capital gains use separate 0%, 15%, and 20% federal rates (see capital gains rates guide). High earners may also owe the 3.8% net investment income tax once MAGI crosses the thresholds below.

Retirement Account Distributions

Traditional IRA and 401(k) withdrawals are generally ordinary income in the year received. Roth qualified distributions are tax-free at the federal level. Required minimum distributions from pre-tax accounts therefore inherit whatever marginal bracket the rest of your income already reached.

2026 Standard Deduction Amounts

Most filers subtract the standard deduction before brackets apply. The 2026 amounts from IRS Rev. Proc. 2025-32:

Filing Status	2026 Standard Deduction
Single	$16,100
Married filing jointly	$32,200
Married filing separately	$16,100
Head of household	$24,150

Itemizers replace the standard amount with Schedule A totals (SALT capped at $40,000 for 2026, plus mortgage interest, charity, and large medical). See brackets vs deductions vs credits for where the standard deduction sits in the full computation order.

How the IRS Adjusts Brackets Each Year

Congress sets the seven statutory rates (10% through 37%). The IRS moves the dollar boundaries each fall using inflation indexing so bracket creep does not silently raise real tax burdens when wages rise with prices.

Chained CPI Methodology

Since the 2017 tax law, bracket thresholds follow the chained CPI (C-CPI-U), which grows slightly slower than the older CPI-U measure. For 2026, most single-filer boundaries rose about 2.7% from 2025 under current IRS tables.

Statutory Rates vs Dollar Thresholds

The 2025 One Big Beautiful Bill Act made the seven-rate structure permanent; what changes annually are the slice widths, not the percentages. When you hear “the brackets were indexed for inflation,” it refers to these dollar cutoffs only.

Married Filing Jointly vs Separately

Most couples file jointly because brackets are roughly double the single schedule and credits phase out more slowly. Married filing separately uses the same rate percentages but with single-width brackets and several credit limitations (Child Tax Credit, education credits, Roth IRA limits). Separate filing can make sense when one spouse has large medical expenses subject to the 7.5%-of-AGI floor or when limiting joint audit exposure, but it rarely lowers combined tax for dual-earner households.

Head of Household Qualifications

Head of household status requires that you be unmarried (or considered unmarried) on the last day of the year, pay more than half the cost of keeping up a home, and have a qualifying person live with you more than half the year (typically a child or dependent parent). The reward is wider brackets and a larger standard deduction ($24,150 in 2026) between single and joint treatment.

Preferential Long-Term Capital Gains Rates

Assets held longer than one year can qualify for 0%, 15%, or 20% federal rates instead of ordinary brackets. For 2026 single filers, the 15% rate generally begins near $48,350 of taxable income and the 20% rate near $533,400 (joint thresholds are higher). Collectibles and certain small-business stock carry different rules; ordinary-rate treatment still applies to short-term gains.

Additional Medicare and NIIT Surtaxes

Income tax brackets do not include payroll or surtax layers. High earners stack these on top of bracket tax.

Additional Medicare Thresholds

W-2 employees pay an extra 0.9% Medicare tax on wages above $200,000 (single) or $250,000 (married filing jointly). Self-employed filers pay the parallel SECA surtax on net self-employment income above the same thresholds.

Net Investment Income Tax

The 3.8% NIIT applies to net investment income when modified adjusted gross income exceeds $200,000 (single) or $250,000 (joint). It sits outside the ordinary bracket schedule but often hits the same high-income households that reach the top 37% bracket.

Withholding and Estimated Tax Payments

Employers withhold federal income tax using the same marginal schedule, but on pay-period slices rather than annual taxable income. Self-employed filers and investors with income not subject to withholding generally owe quarterly estimated tax payments (Form 1040-ES) to avoid underpayment penalties. Bracket tables explain the annual liability; withholding tables spread it across paychecks.

Credits Applied After Bracket Tax

Bracket math yields tax before credits. Dollar-for-dollar credits (Child Tax Credit, EITC, education credits, foreign tax credit) subtract afterward and can generate refunds when refundable. A $2,000 credit saves $2,000 regardless of bracket, which is why credits dominate planning for moderate-income families. Full walkthrough: brackets vs deductions vs credits.

Layering Federal Brackets with State Tax

Federal brackets are only the first layer. Most states impose their own income tax on the same taxable income base (with different deductions). Nine states skip broad wage income tax entirely but may levy sales, property, or selective excise taxes instead. Compare any state at the state directory or run an all-layer estimate in the 2026 calculator.

How to Use the 2026 Federal Brackets

The federal income tax brackets are marginal, not flat. A single filer earning $100,000 in 2026 does not pay 22% on the entire amount. Instead:

• $0 – $12,400 is taxed at 10% = $1,240.00
• $12,400 – $50,400 is taxed at 12% = $4,560.00
• $50,400 – $105,700 is taxed at 22%, but only up to $100,000 applies here = ($100,000 − $50,400) × 22% = $10,912.00

Total federal income tax on $100,000 taxable income (single): ~$16,712. Effective federal rate: 16.7%. Marginal rate: 22%.

The standard deduction reduces taxable income before brackets apply. A $100,000 gross-income single filer claiming the $16,100 2026 standard deduction has $83,900 of taxable income. See how tax brackets work for three more worked examples at $50K, $100K, and $250K.

Related Guides and Tools

• How federal tax brackets work: marginal vs effective rate with bar chart
• Effective vs marginal rate: which number to use for raises and deductions
• Nine states with no income tax: substitute taxes and tradeoffs
• Highest state tax at $100K: scenario comparison across jurisdictions
• Federal marginal brackets dataset: machine-readable research export