How Income Tax Brackets Work
Tax brackets are widely misunderstood. Many people believe that earning a higher salary can somehow leave them worse off after taxes — that is not how progressive taxation works. Each dollar is taxed at the rate for its bracket, not your entire income at the highest rate you reach.
Marginal vs. effective rate
Your marginal rate is the rate applied to your last dollar of income — the bracket you are in. Your effective rate is the actual percentage of your total income paid as tax, which is always lower than the marginal rate. A person in the 22% bracket almost certainly pays a blended effective rate well below 22%.
How brackets stack
In a progressive system, income is taxed in layers. If brackets are 10% on the first $10,000, 12% on $10,001–$40,000, and 22% on $40,001–$90,000, then someone earning $50,000 pays: $1,000 (10% on first $10K) + $3,600 (12% on next $30K) + $2,200 (22% on next $10K) = $6,800 total, not $50,000 × 22% = $11,000.
Using the income tax calculator
Enter your annual gross income and filing status. The calculator applies current tax brackets, shows your marginal and effective rates, and breaks down your tax liability by bracket. This gives you a concrete sense of how much each additional dollar of income will cost you in taxes.