Bottom line: The U.S. tax system is progressive — higher income is taxed at higher rates, but only the income within each bracket pays that bracket's rate. Earning a raise that pushes you into the next bracket does not reduce your net pay. Your marginal rate is what you pay on the last dollar earned; your effective rate is what you actually pay on average.
The most persistent tax myth: "I don't want a raise because it'll bump me into a higher bracket and I'll take home less." This is wrong. Understanding why requires understanding how brackets actually work.
How Tax Brackets Work
The U.S. uses a marginal (progressive) tax system. Income is divided into tiers, and each tier is taxed at its own rate — only the income within that tier, not all income.
2026 federal income tax brackets (single filers, approximate):
| Tax rate | Taxable income range |
|---|---|
| 10% | $0 – $11,925 |
| 12% | $11,926 – $48,475 |
| 22% | $48,476 – $103,350 |
| 24% | $103,351 – $197,300 |
| 32% | $197,301 – $250,525 |
| 35% | $250,526 – $626,350 |
| 37% | Over $626,350 |
2026 married filing jointly (approximate):
| Tax rate | Taxable income range |
|---|---|
| 10% | $0 – $23,850 |
| 12% | $23,851 – $96,950 |
| 22% | $96,951 – $206,700 |
| 24% | $206,701 – $394,600 |
| 32% | $394,601 – $501,050 |
| 35% | $501,051 – $751,600 |
| 37% | Over $751,600 |
The Math: Marginal vs. Effective Rate
Take a single filer with $60,000 in taxable income (after deductions). Their calculation:
- 10% on first $11,925 = $1,193
- 12% on $11,926–$48,475 ($36,549) = $4,386
- 22% on $48,476–$60,000 ($11,524) = $2,535
- Total tax: $8,114
Their marginal rate is 22% — the rate on the last dollar earned. Their effective rate is $8,114 ÷ $60,000 = 13.5% — what they actually pay on average.
The effective rate is always lower than the marginal rate in a progressive system. Most people in the 22% bracket pay an effective federal rate of 12–16%.
- A raise that crosses a bracket threshold increases taxes only on the dollars above the threshold — at the new bracket's rate. If you earn $1,000 more and cross into the 22% bracket by $500, only that $500 is taxed at 22%. The other $500 stays at 12%. Your net pay always increases with a raise.
- Taxable income is not the same as gross income. Subtract the standard deduction ($15,000 single / $30,000 married in 2026) and pre-tax retirement contributions before finding your bracket. A $75,000 earner taking the standard deduction has $60,000 in taxable income.
- Bracket thresholds are adjusted for inflation each year by the IRS. A bracket that applied at $48,000 in 2023 may apply at $50,000+ in 2026. Verify current thresholds at IRS.gov before filing.
Why the Marginal Rate Matters
Your marginal rate determines the value of tax deductions. A $1,000 deduction saves you:
- $120 if you are in the 12% bracket
- $220 if you are in the 22% bracket
- $320 if you are in the 32% bracket
This is why tax planning has more value at higher incomes — each deduction or pre-tax contribution is worth more.
It also explains why traditional 401(k) and IRA contributions are more valuable when your marginal rate is high. Deferring income taxed at 32% today to be withdrawn at 22% in retirement is a 10-percentage-point arbitrage.
Capital Gains: A Separate Rate Schedule
Long-term capital gains (investments held more than one year) and qualified dividends are taxed on a separate, lower rate schedule — 0%, 15%, or 20% depending on taxable income. These do not stack on top of ordinary income brackets; they sit alongside them.
For most middle-income investors, long-term capital gains are taxed at 15%. For lower-income investors (taxable income below approximately $47,025 single / $94,050 married in 2026), the rate is 0% — meaning qualifying investment income is completely tax-free.
Tax brackets and thresholds are adjusted annually for inflation. Verify current amounts at IRS.gov before filing.
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