2026 Federal Income Tax Brackets Under OBBBA

The federal income tax system uses seven tax brackets with rates of 10%, 12%, 22%, 24%, 32%, 35%, and 37%. For 2026, the OBBBA made two adjustments: it permanently extended the bracket structure from the Tax Cuts and Jobs Act (expiration was scheduled for December 31, 2025) and added a special 4% inflation adjustment for the two lowest brackets (10% and 12%) and a 2.3% adjustment for higher brackets. These adjustments increase the income thresholds at which taxpayers enter higher brackets, providing a modest tax relief through bracket creep reduction. For single filers in 2026, the brackets are: 10% on income up to $12,400; 12% from $12,401 to $50,400; 22% from $50,401 to $105,700; 24% from $105,701 to $201,775; 32% from $201,776 to $256,225; 35% from $256,226 to $640,600; and 37% on income over $640,600. For married couples filing jointly, the thresholds are roughly double: 10% up to $24,800; 12% from $24,801 to $100,800; 22% from $100,801 to $211,400; 24% from $211,401 to $403,550; 32% from $403,551 to $512,450; 35% from $512,451 to $768,700; and 37% over $768,700. Head of household filers have intermediate thresholds.

Understanding the distinction between marginal tax rate and effective tax rate allows informed planning decisions. Your marginal rate is the rate you pay on your next dollar of income—the bracket your last dollar falls into. Your effective tax rate is your total tax divided by total income, always lower than your marginal rate because you pay lower rates on income in lower brackets before reaching your highest bracket. For example, a single filer earning $100,000 pays 10% on the first $12,400, 12% on the next $38,000, and 22% on the next $49,600, but only the last $349.55 of income at 22%, making their effective rate approximately 13.2%, not 22%. Knowing your marginal rate helps you evaluate whether to defer income or accelerate deductions. Additionally, high-income earners face the 3.8% Net Investment Income Tax (NIIT) on net investment income (capital gains, dividends, interest, rental income) above $200,000 (single) or $250,000 (married) (IRC §1411), and the 0.9% Additional Medicare Tax on wages above these same thresholds (IRC §3101). These apply separately from regular income tax, creating combined federal rates above 37% for high earners (37% + 3.8% + 0.9% = 41.7% combined for top earners subject to all three).

Tax planning using bracket knowledge allows taxpayers to evaluate timing decisions. If you're near a bracket boundary, one approach involves accelerating deductions (charitable contributions, retirement account contributions) or deferring income (delaying invoicing, deferring bonus payments) to stay in a lower bracket. In years with lower income (sabbaticals, transition years), you might harvest capital gains or recognize other income at lower rates, where bracket capacity exists. Couples benefit from wider married filing jointly brackets compared to married filing separately—joint filing produces lower combined tax in most cases (IRC §1(a)). Business owners can time income recognition and deductions between years to manage bracket placement. Long-term capital gains receive preferential treatment (0%, 15%, or 20% rates depending on income level) (IRC §1(h)). If you have ordinary income in one year and capital gains, timing the gains realization can affect which capital gains rate applies. The SALT deduction cap ($40,400 in 2026, IRC §164(b)(6)) and other credits (Earned Income Tax Credit under IRC §32, Dependent Care Credit under IRC §21) interact with bracket planning. A tax professional can model your bracket placement and evaluate specific optimization approaches for your situation.