Marginal Tax Rate
The marginal tax rate is the tax rate applied to your last dollar of taxable income, representing the percentage of tax you would pay on an additional dollar of income within your current tax bracket.
Exam Tip
Marginal rate = rate on LAST dollar. Effective rate = total tax / total income. Know the 2025 brackets.
What is Marginal Tax Rate?
The marginal tax rate is the percentage of tax applied to your income for each tax bracket in which you qualify. Your marginal rate is the rate you pay on your "last dollar" of taxable income.
2025 Federal Income Tax Brackets
| Tax Rate | Single Filers | Married Filing Jointly |
|---|---|---|
| 10% | $0 - $11,925 | $0 - $23,850 |
| 12% | $11,926 - $48,475 | $23,851 - $96,950 |
| 22% | $48,476 - $103,350 | $96,951 - $206,700 |
| 24% | $103,351 - $197,300 | $206,701 - $394,600 |
| 32% | $197,301 - $250,525 | $394,601 - $501,050 |
| 35% | $250,526 - $626,350 | $501,051 - $751,600 |
| 37% | Over $626,350 | Over $751,600 |
Marginal vs. Effective Tax Rate
| Concept | Definition |
|---|---|
| Marginal Rate | Rate on last/next dollar |
| Effective Rate | Total tax / Total income |
Common Misconceptions
- "I'll lose money if I earn more" - FALSE. Only the additional income is taxed at the higher rate.
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