How Tax Brackets Work in the US

What Are Tax Brackets? The Foundation

A tax bracket is an income range with an associated tax rate. The United States uses a progressive tax system, meaning the rate increases as income increases — but only on the income within each bracket, not on all income.

Think of tax brackets like steps on a staircase. Each step has its own rate, and you only pay that step's rate on the income that falls on that step. Income on the first step pays 10%. Income on the second step pays 12%. And so on.

The 2026 Tax Brackets for Single Filers

- 10%: $0 – $11,925

- 12%: $11,925 – $48,475

- 22%: $48,475 – $103,350

- 24%: $103,350 – $197,300

- 32%: $197,300 – $250,525

- 35%: $250,525 – $626,350

- 37%: Over $626,350

These ranges apply to taxable income — your gross income minus the standard deduction ($15,000 for single filers in 2026) or itemized deductions, whichever is larger.

Marginal Rate vs. Effective Rate: The Most Important Distinction

Two tax rate concepts are essential to understand, and confusing them is the root of most tax misconceptions:

Marginal Tax Rate

Your marginal tax rate is the rate applied to the next dollar of income you earn — or equivalently, the bracket that your highest dollar of income falls into. If you are a single filer with $70,000 in taxable income in 2026, your marginal rate is 22% (because $70,000 falls within the $48,475–$103,350 bracket).

The marginal rate is the correct rate to use when:

- Calculating the tax cost of additional income (bonus, freelance work, raise)

- Modeling the tax savings from a pre-tax deduction (401k, HSA contribution)

- Evaluating whether to take a specific deductible expense

Effective (Average) Tax Rate

Your effective tax rate is your total federal income tax divided by your total taxable income (or gross income, depending on calculation). It represents your blended rate across all brackets.

For the $70,000 taxable income example:

- Tax on first $11,925 at 10% = $1,193

- Tax on $11,925–$48,475 (=$36,550) at 12% = $4,386

- Tax on $48,475–$70,000 (=$21,525) at 22% = $4,736

- Total tax = $10,315

- Effective rate = $10,315 ÷ $70,000 = 14.7%

The effective rate is the correct rate to use when:

- Comparing your overall tax burden year over year

- Comparing your tax burden to peers in different brackets

- Assessing the role of taxes in your overall financial picture

Putting It All Together: Three Real-World Examples

Example 1: The $50,000 Worker — "Am I Really in the 12% Bracket?"

Alex earns $50,000 and files as single. After the $15,000 standard deduction, taxable income is $35,000.

- 10% on $11,925 = $1,193

- 12% on $23,075 = $2,769

- Total federal tax: $3,962 | Effective rate: 7.9% on gross income

Alex is in the 12% "bracket" by marginal rate, but the effective federal rate is under 8%. The 12% rate applies only to income between $11,925 and $35,000 (after standard deduction).

---

Example 2: The $100,000 Worker — "Will My Bonus Be Crushed by Taxes?"

Jordan earns $100,000 with a $10,000 year-end bonus. They're worried moving into the 22% bracket will "take" most of the bonus.

Without the bonus: taxable income = $85,000 (in the 22% bracket already)

With $10,000 bonus: taxable income = $95,000 (still in the 22% bracket)

The bonus is taxed at 22% marginal rate:

$10,000 × 22% = $2,200 in additional federal tax

Bonus after federal tax: $7,800 (plus state taxes)

Jordan takes home $7,800 from a $10,000 bonus — they are not "in a different bracket" and did not lose money from the bonus.

---

Example 3: The Raise That Crosses a Bracket

Sam earns $95,000 (taxable income $80,000, in 22% bracket) and gets a $30,000 raise, bringing gross to $125,000. Taxable income jumps to $110,000, crossing into the 24% bracket at $103,350.

Only $6,650 of the raise is taxed at 24% (the amount above $103,350). The rest of the raise ($23,350) is still taxed at 22%.

Additional tax from the raise:

- $23,350 × 22% = $5,137

- $6,650 × 24% = $1,596

- Total additional federal tax: $6,733

Sam's net increase from the $30,000 raise (federal only): $30,000 − $6,733 = $23,267 more take-home per year. They are always better off with the raise.

Debunking the "Raise Into a Higher Bracket" Horror Story

The most persistent tax myth in the United States is this: "If I earn more and move into a higher bracket, I'll take home less money." This is mathematically impossible in a progressive tax system.

Here is why:

Suppose the 22% bracket begins at $48,475 of taxable income. If you currently earn $48,000 taxable and get a $1,000 raise, pushing you to $49,000:

- The $1,475 from $47,000 to $48,475 is still taxed at 12%

- Only the $525 above $48,475 is taxed at 22%

- You pay an extra $115.50 in tax on the $1,000 raise

- Your net gain is $884.50

You always take home more after a raise. Period. The marginal rate is never 100% — crossing a bracket means paying more on the incremental income, not on your entire previous income.

Why Do People Believe This Myth?

The confusion often arises from supplemental wage withholding. When an employer pays a large bonus, they may withhold 22% flat as a "supplemental wage" regardless of your actual bracket. If you're in the 12% bracket, you'll see more withheld than you owe — but you'll get the overage back as a tax refund when you file. The withholding is not the tax.

Using Bracket Knowledge to Optimize Your Taxes

Understanding your exact bracket position unlocks several valuable planning strategies:

1. Traditional Retirement Contributions at the Right Rate

Every dollar you contribute to a traditional 401(k) reduces your taxable income and effectively removes a dollar from your highest marginal bracket. If you're in the 22% bracket, a $10,000 401(k) contribution saves $2,200 in federal taxes. If you can push your taxable income below $48,475 (the 22% bracket entry), your savings rate climbs.

2. Roth Conversion in Low-Income Years

If you have a year of unusually low income — career transition, sabbatical, large business losses — you may temporarily be in the 10% or 12% bracket. This is an optimal time to convert traditional IRA funds to Roth IRA, paying taxes at your current low rate rather than a likely higher rate in retirement.

3. Tax-Loss Harvesting

If your capital gains would push you into the 15% long-term capital gains bracket (which applies at higher ordinary income levels), harvesting capital losses from underperforming investments can offset those gains and keep you in the 0% capital gains bracket (which applies for taxable incomes up to $47,025 for single filers in 2026).

4. "Bracket Filling"

If you're in the 12% bracket with room before hitting 22%, consider accelerating income into the current year (Roth conversions, realizing long-term capital gains) at 12% rather than deferring and potentially paying 22%+ in future years.

5. Business Owners: Income Timing

Self-employed individuals and business owners have more control over when income is received. Deferring invoice collection to January instead of December can shift income into a new tax year — useful when a year's income is tracking toward the top of a bracket.

How Tax Brackets Change Over Time

Federal tax brackets are not static. Two forces change them annually:

Inflation Adjustments

Each year the IRS adjusts bracket thresholds for inflation using the Chained Consumer Price Index (C-CPI-U). This prevents "bracket creep" — the phenomenon where inflation-driven wage increases push workers into higher brackets even though their real purchasing power hasn't changed. From 2025 to 2026, most bracket thresholds increased by approximately 2.8%.

Legislative Changes

Congress can change both the number of brackets and the rates themselves. The 2017 Tax Cuts and Jobs Act (TCJA) dramatically restructured brackets, lowering the top rate from 39.6% to 37% and adjusting all thresholds. Key provisions of the TCJA are scheduled to sunset at the end of 2025 unless renewed — meaning 2026 rates could be affected depending on Congressional action. As of this writing, the 2026 rates shown in this article reflect currently enacted law.

Historical Context

For perspective: the top federal marginal rate was 94% during World War II. In 1963, it was still 91%. Ronald Reagan's 1986 tax reform reduced the top rate to 28%. Today's 37% top rate is historically moderate, though the definition of which income it applies to has changed significantly.

Frequently Asked Questions