One of the most persistent myths in personal finance is that earning more money can somehow cost you more in taxes overall. That fear stems from a misunderstanding of how federal tax brackets work. The U.S. federal income tax system is progressive: income is taxed in layers, not all at one flat rate.
Marginal Rate vs. Effective Rate
Two terms are essential to understanding your federal tax bill:
- Marginal rate: The tax rate that applies to your last dollar of income — the rate of your highest bracket reached.
- Effective rate: The actual percentage of your total income paid in federal income tax, after applying all brackets proportionally.
Your effective rate is always lower than your marginal rate, often significantly so.
2025 Tax Brackets
The IRS adjusts bracket thresholds annually for inflation. These are the 2025 brackets, which apply to income earned in calendar year 2025.
Single Filers
| 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 |
Married Filing Jointly
| 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 |
Head of Household
| Tax Rate | Taxable Income Range |
|---|---|
| 10% | $0 – $17,000 |
| 12% | $17,001 – $64,850 |
| 22% | $64,851 – $103,350 |
| 24% | $103,351 – $197,300 |
| 32% | $197,301 – $250,500 |
| 35% | $250,501 – $626,350 |
| 37% | Over $626,350 |
Worked Example: $85,000 Salary (Single Filer)
Let’s say you are a single filer earning $85,000 in gross salary for 2025. Before applying the brackets, you need to arrive at taxable income by subtracting deductions.
Step 1: Subtract the Standard Deduction
The 2025 standard deduction for a single filer is $15,750 (OBBBA-permanent, up from $15,000 projected pre-OBBBA).
$$85,000 - 15{,}750 = $69{,}250 \text{ taxable income}$$
Step 2: Apply Each Bracket
| Bracket | Range Applied | Income in Bracket | Tax |
|---|---|---|---|
| 10% | $0 – $11,925 | $11,925 | $1,192.50 |
| 12% | $11,926 – $48,475 | $36,550 | $4,386.00 |
| 22% | $48,476 – $69,250 | $20,775 | $4,570.50 |
| Total | $69,250 | $10,149.00 |
Step 3: Calculate Effective Rate
$$\frac{$10{,}149}{$85{,}000} = 11.9% \text{ effective rate}$$
Despite being in the 22% marginal bracket, you pay an effective rate of just 11.9% on your gross income. The 22% rate only applies to the $20,775 that sits above the 12% bracket ceiling — not to the full $69,250 of taxable income, and certainly not to the full $85,000 gross salary.
What “Being in the 22% Bracket” Actually Means
When someone says they are “in the 22% bracket,” it means their income has crossed the threshold into that bracket. It does not mean 22% of their entire income goes to federal taxes. For our $85,000 single filer:
- The first $11,925 is taxed at 10%
- The next $36,550 is taxed at 12%
- Only the final $20,775 is taxed at 22%
The 10% and 12% rates apply to everyone — including the highest earners — on those same initial slices of income.
A Raise Will Never Reduce Your Take-Home Pay
Because only the income above a threshold gets taxed at the higher rate, earning more always means keeping more. If you earn $103,350 and receive a $1,000 raise, only that $1,000 moves into the 24% bracket — not your entire income. Your take-home pay increases by $760 ($1,000 minus 24% federal tax on the marginal amount).
This is why the notion of refusing a raise to “stay in a lower bracket” has no financial basis.
Pre-Tax Deductions Reduce Your Taxable Income
You are not taxed on gross wages directly — you are taxed on taxable income, which is gross income minus above-the-line adjustments and either the standard deduction or itemized deductions. Common pre-tax deductions that reduce taxable income include:
- 401(k) traditional contributions — reduces taxable income dollar-for-dollar
- HSA contributions — fully deductible if made outside of payroll
- Student loan interest — up to $2,500, subject to income limits
- IRA contributions — deductible traditional IRA contributions (income limits apply)
Reducing taxable income does not just save you the marginal rate on those dollars — it may also keep more of your income taxed at lower bracket rates.
How Brackets Change Over Time
The IRS indexes bracket thresholds to inflation using the Chained Consumer Price Index (C-CPI-U). In years with high inflation, brackets expand more, which means less bracket creep — the phenomenon where inflation pushes you into higher brackets without a real income gain. The 2025 adjustment was roughly 2.8% over 2024 thresholds.
Key Takeaways
- The U.S. uses a progressive tax system — higher rates apply only to the portion of income above each threshold.
- Your marginal rate is the rate on your last dollar earned; your effective rate is what you actually pay on all income combined.
- At an $85,000 salary as a single filer in 2025, your federal effective rate is approximately 12.1%, even though your marginal rate is 22%.
- Pre-tax contributions to retirement accounts and other deductions directly lower your taxable income and your tax bill.
- A raise cannot reduce your after-tax income. Only the new income above a bracket threshold is taxed at the higher rate.