Marginal vs Effective Tax Rate: What's the Difference and Why It Matters
Published: 2026-05-15 · 5 min read
Many people confuse their tax bracket with their actual tax rate. Understanding the difference can save you money and reduce tax anxiety.
Understanding Tax Rates
One of the most common misconceptions: moving into a higher bracket means ALL your income is taxed at that rate. This is false.
Marginal vs Effective Rate
- Marginal rate: The rate on your LAST dollar of income
- Effective rate: Total tax / Total income always lower
Example: US $100,000 Income 2025
| Bracket | Rate | Income | Tax |
|---------|------|--------|-----|
| $0–$11,925 | 10% | $11,925 | $1,193 |
| $11,925–$48,475 | 12% | $36,550 | $4,386 |
| $48,475–$84,2...
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