US Tax Bracket Calculator

This page answers where you sit: which bracket your last dollar falls in, how much more you can earn before the next rate begins, and how much less you would need for the rate to drop. If the question is the dollar amount owed rather than the position, the federal tax bracket calculator runs the same brackets and leads with the bill.

A tax bracket is the range of income taxed at a specific marginal rate. The US (and many other countries) use a progressive tax system, meaning only the income within each bracket is taxed at that rate, not your entire income. This is one of the most misunderstood concepts in personal finance.

Formula: Tax Owed = Σ (Income in Bracket × Bracket Rate) for each applicable bracket Effective Tax Rate = Total Tax Owed ÷ Total Taxable Income × 100 Marginal Rate = The rate applied to your next dollar of income

2026 US Federal Income Tax Brackets (Single filer):

Worked example, $75,000 taxable income (single):

• 10% on first $12,400 = $1,240
• 12% on $12,401–$50,400 = $38,000 × 0.12 = $4,560
• 22% on $50,401–$75,000 = $24,600 × 0.22 = $5,412
• Total federal tax = $11,212
• Effective rate = $11,212 ÷ $75,000 = 15.0%
• Marginal rate = 22% (the rate on the last dollar earned)

Key insight: Being in the “22% bracket” does NOT mean you pay 22% on everything. You pay 22% only on income above $50,400. Your effective rate on the full $75,000 is just 15.0%.

Standard deduction (2026):

• Single: $16,100
• Married filing jointly: $32,200
• Head of Household: $24,150

Taxable income = Gross Income − Standard Deduction − Other Deductions. A $90,000 income single filer subtracts $16,100 → $73,900 taxable income, putting them solidly in the 22% bracket with a ~14.8% effective rate.

The number worth knowing is the headroom, not the bracket

Your bracket on its own decides nothing. What decides things is how much room is left in it. A single filer at $73,900 taxable has $31,800 before the 24% rate begins, so a $20,000 Roth conversion costs 22% throughout and a $40,000 one does not. Same bracket, different answer, and the bracket name alone will not tell you which.

The same works downward. If you are $4,000 into the 22% band, a $4,000 traditional 401(k) contribution puts your last dollar back in the 12% band. It does not re-rate the income below it, and it never turns a raise into a loss. That myth persists because the word “bracket” sounds like a category you fall into rather than a range each slice of income passes through.

Watch for the real cliffs, which are not brackets. Losing a subsidy, a credit phase-out, or an income-based Medicare surcharge can genuinely cost more than the extra dollar earns. Those are step functions. Tax brackets are not.