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Glossary · Federal tax · tax year 2026

Tax bracket

A tax bracket represents a specific range of taxable income subject to a particular federal tax rate. The United States utilizes a progressive tax system, meaning that as your income grows, the portion of your earnings falling into higher brackets is taxed at higher marginal rates. This system applies only to taxable income, which is your gross pay minus eligible deductions and exemptions.

Definition

Tax bracket, in plain terms

Tax brackets do not mean that your entire salary is taxed at a single rate. They measure the incremental tax applied to each slice of your earnings as you move up the income scale. This structure is frequently confused with an effective tax rate, which calculates the average percentage paid across all income levels after accounting for the various rates applied to each individual tax bracket.

Formula: Tax = 10% of the first band + 12% of the next + 22% of the next … up to the top band you reach
Worked example · 2026 rules, single filer

Tax bracket on a real salary

Every figure below is produced by the same engine that runs the AfterTaxLab calculators — nothing here is estimated by hand.

Item2026 figure
Bracket 1 · taxable income up to $12,40010%
Bracket 2 · $12,400 to $50,40012%
Bracket 3 · $50,400 to $105,70022%
Bracket 4 · $105,700 to $201,77524%
Bracket 5 · $201,775 to $256,22532%
Bracket 6 · $256,225 to $640,60035%
Bracket 7 · $640,600 and above37%
Salary $100,000 → bracket reached22%
Federal tax on $100,000$13,170

Income is taxed in tiers rather than at a flat percentage. For an individual with a $100,000 salary, only the portion of earnings within the 22% federal bracket is taxed at that specific rate. The remaining lower portions of the income are taxed at the smaller percentages defined in the preceding brackets. Consequently, the total federal tax of $13,170 reflects the sum of these graduated rates applied to each distinct portion of the total salary.

Where you meet this term

Using tax bracket on AfterTaxLab

Tax brackets are displayed within the primary federal income tax calculation section of the AfterTaxLab salary calculator. Users should examine the breakdown table provided beneath the final take-home pay figure to see how their specific income level progresses through each threshold. This visual representation clarifies which portion of earnings enters the 22% federal bracket and how it influences the final tax liability.

Tax bracket: common questions

Does moving into a higher tax bracket reduce my total take-home pay?

No. Moving into a higher bracket only increases the tax rate on the portion of income that exceeds the previous threshold. Because the lower portions of your salary remain taxed at their original, lower rates, your total take-home pay will still increase when your gross salary rises.

Why does the top federal rate of 37% start at $640,600?

The federal government sets specific income thresholds for each tax bracket to determine how much revenue is collected at different wealth levels. The 37% rate is the highest tier in the current system, applying only to taxable income exceeding $640,600.

Is my entire income taxed at the rate of my highest bracket?

No. This is a common misconception. In a progressive system, you pay the lower rates on the initial parts of your income. For instance, if you reach the 22% federal bracket, you do not pay that rate on the entire amount, but only on the earnings within that specific range.

Figures calculated with the AfterTaxLab 2026 engine: federal brackets and standard deduction ($16,100 single), Social Security wage base $184,500, published 2026 state rates. Estimates for planning only — not tax advice. Last verified 21 Sep 2026 · methodology.

Sources & method

Figures on this page are planning estimates built from published IRS tables and state agency rates; they are not tax advice. How we build and check these estimates · Edited by: · Last updated: 2026-11-09