How Do Tax Brackets Actually Work?
Tax brackets are progressive, meaning only the income within each bracket range is taxed at that rate. A single filer earning $80,000 does not pay 22% on all $80,000. They pay 10% on the first $12,400,12% on the next $38,000, and 22% only on the income above $50,400. This structure ensures that earning more money never results in less take-home pay.
The common misconception
Many people believe that crossing into a higher tax bracket means their entire income is taxed at the new, higher rate. This fear sometimes leads people to turn down raises, avoid overtime, or try to keep their income below a bracket threshold. None of that is necessary.
The bracket rate applies only to the dollars above the threshold, not to every dollar you earn. If a single filer earns $1 more than the $50,400 threshold for the22% bracket, only that extra $1 is taxed at 22%. The rest of their income is still taxed at the lower rates below.
Step-by-step bracket calculation
Here is how the IRS applies the 2026 brackets to a single filer's taxable income (gross income minus the $16,100 standard deduction or itemized deductions):
- The first $12,400 of taxable income is taxed at 10%.
- Income from $12,400 to $50,400 is taxed at 12%.
- Income from $50,400 to $105,700 is taxed at 22%.
- Income from $105,700 to $201,775 is taxed at 24%.
- Income from $201,775 to $256,225 is taxed at 32%.
- Income from $256,225 to $640,600 is taxed at 35%.
- Income above $640,600 is taxed at 37%.
Each layer is calculated independently, then the results are added together to produce your total income tax before credits.
Worked example
Consider a single filer with $80,000 in gross income for 2026.
Step 1: Find taxable income
$80,000 gross income - $16,100 standard deduction = $63,900 taxable income
Step 2: Apply each bracket
- 10% on $12,400: $1,240
- 12% on $12,400 to $50,400: $4,560
- 22% on $50,400 to $63,900: $2,970
Step 3: Add the layers
Total tax: $8,770
This filer is "in the 22% bracket," but their effective rate on gross income is only 11.0%. The 22% rate is applied to only a portion of their income.
Try different income levels with the federal income tax calculator to see how the progressive structure affects your own tax.
Marginal vs effective rate
Your marginal tax rate is the bracket rate that applies to your last dollar of taxable income. In the example above, the marginal rate is 22%.
Your effective tax rate is total tax paid divided by your total income. It is always lower than the marginal rate because the progressive system taxes your first dollars at the lowest rates. The effective rate gives a more accurate picture of your overall tax burden.
Both numbers are useful. The marginal rate tells you how much tax you will pay on additional income (a bonus, investment gain, or side gig). The effective rate tells you the share of your total earnings that goes to federal income tax.