What Is a Marginal Tax Rate? (2026)

Your marginal tax rate is the tax rate charged on your last (highest) dollar of taxable income, not the rate applied to your entire paycheck. The United States uses a progressive system with seven federal rates for 2026, so different slices of your income are taxed at different rates and only your top dollars reach your top rate.

Last reviewed: October 5, 2026 | Written and reviewed by Craig Wear, CFP®, founder of Q3 Advisors

What is marginal tax rate, in plain English?

Your marginal tax rate is the percentage charged on your last dollar of taxable income. If your top dollar falls in the 22% bracket, your marginal rate is 22%, but only the dollars inside that bracket are taxed at 22%. Every dollar below it is taxed at the lower rate for its own bracket (Source: IRS, “Federal income tax rates and brackets”).

Picture a row of glasses filling with water. The first glass fills at the lowest rate; only after it overflows does income spill into the next glass, taxed at the next rate. Your marginal rate simply describes the glass your top dollar is sitting in right now. The seven statutory rates were made permanent by the One Big Beautiful Bill Act (OBBBA, Public Law 119-21, enacted July 4, 2025), so the 2026 structure is not scheduled to sunset (Source: Rev. Proc. 2025-32, Sec. 2.01).

How do marginal tax rates work in a progressive system?

In a progressive (graduated) system, income is taxed in layers. Each bracket carries a rate, and that rate applies only to the income that falls within the bracket’s dollar range. Moving into a higher bracket raises the rate on the new dollars only, never on income you already earned in lower brackets (Source: IRS, “Federal income tax rates and brackets”).

This layering is why a raise never leaves you worse off after tax. Under bracketed layering, an added dollar is only ever taxed at your marginal rate, so your take-home pay always rises. The dollar figures below are 2026 taxable income thresholds, meaning income after deductions. The 2026 standard deduction is $16,100 for single filers, $32,200 for married filing jointly, and $24,150 for head of household, so your first taxable dollar begins above those amounts (Source: Rev. Proc. 2025-32, Sec. 4.14).

What are the 2026 federal marginal tax brackets?

For 2026, the seven federal marginal rates are 10%, 12%, 22%, 24%, 32%, 35%, and 37%. The taxable income thresholds differ by filing status. The tables below show the single, married filing jointly, and head of household schedules for tax years beginning in 2026 (Source: IRS Rev. Proc. 2025-32, Sec. 4.01).

2026 brackets: single filers

For single filers in 2026, the 12% band ends at $50,400 of taxable income, so any dollar above that reaches the 22% bracket. The 24% band then runs to $201,775, the 32% band to $256,225, and the 35% band to $640,600. Only taxable income above $640,600 is taxed at the top 37% marginal rate (Source: IRS Rev. Proc. 2025-32, Sec. 4.01).

Source: IRS Rev. Proc. 2025-32, Sec. 4.01, for tax years beginning in 2026.

2026 brackets: married filing jointly

For married couples filing jointly in 2026, the 22% bracket begins above $100,800 of taxable income, double the single threshold. The 24% band runs to $403,550, the 32% band to $512,450, and the 35% band to $768,700. Only taxable income above $768,700 reaches the top 37% marginal rate, so most joint filers never touch it (Source: IRS Rev. Proc. 2025-32, Sec. 4.01).

Source: IRS Rev. Proc. 2025-32, Sec. 4.01, for tax years beginning in 2026.

2026 brackets: head of household

For head of household filers in 2026, the 22% bracket starts above $67,450 of taxable income, and the 24% rate applies from $105,700. The 32% band then runs to $256,225 and the 35% band to $640,600. As with single filers, only taxable income above $640,600 is taxed at the top 37% marginal rate (Source: IRS Rev. Proc. 2025-32, Sec. 4.01).

Source: IRS Rev. Proc. 2025-32, Sec. 4.01, for tax years beginning in 2026. Married filing separately schedules also appear in Sec. 4.01.

How do I calculate my marginal tax rate?

To calculate your marginal tax rate, find the 2026 bracket where your top taxable dollar lands for your filing status. Start with taxable income (total income minus your standard or itemized deduction), then read the bracket table to see which rate applies to that last dollar (Source: IRS Rev. Proc. 2025-32, Sec. 4.01 and 4.14).

1. Estimate your total income for 2026.
2. Subtract your standard deduction ($16,100 single, $32,200 married filing jointly, $24,150 head of household) or your itemized deductions to reach taxable income.
3. Find your filing status table above and identify the bracket range your top dollar falls into.
4. The rate on that range is your marginal tax rate.

Here is a worked example. Take a single filer with $90,000 of taxable income for 2026. Their top dollar sits in the 22% bracket, so their marginal rate is 22%, yet their income is taxed across three layers:

1. First $12,400 taxed at 10% = $1,240.
2. Next $38,000 (from $12,400 to $50,400) taxed at 12% = $4,560.
3. Next $39,600 (from $50,400 to $90,000) taxed at 22% = $8,712.
4. Total tax = $14,512 on $90,000 of taxable income.

The marginal rate is 22%, but the effective (average) rate is about 16.1% ($14,512 divided by $90,000). A flat 22% on the full $90,000 would be $19,800, so the graduated system charges far less than the top rate suggests.

Does moving into a higher bracket tax all my income at that rate?

No. Moving into a higher bracket does not tax all of your income at the higher rate. Only the dollars that fall within each bracket’s range are taxed at that bracket’s rate. If a single filer’s 2026 taxable income rises from $50,000 to $52,000, only the $1,600 above the $50,400 line is taxed at 22%; the rest stays at 10% and 12% (Source: IRS Rev. Proc. 2025-32, Sec. 4.01).

This is the most common misconception about the tax code. Using the filling-glasses image again, crossing into a new glass does not re-tax the water already resting in the lower glasses. Your earlier dollars keep their lower rates permanently, and a raise always raises your after-tax income.

Marginal vs. effective tax rate, the short version

Your marginal rate is the rate on your last dollar of taxable income (your top bracket). Your effective, or average, rate is total tax divided by total income. Because early dollars are taxed at lower bracket rates, the effective rate is almost always lower than the marginal rate, as the $90,000 example above shows (22% marginal versus roughly 16.1% effective).

Both measures answer different questions, and the marginal rate is the one that drives decisions about the next dollar. For a full side-by-side treatment, see our companion explainer on effective tax rate vs. marginal tax rate.

Marginal rate on capital gains vs. ordinary income

Long-term capital gains and qualified dividends have their own rate schedule, separate from the ordinary marginal brackets. They are taxed at 0%, 15%, or 20% depending on taxable income, so the marginal rate on an extra dollar depends on whether that dollar is ordinary income or a long-term gain (Source: IRS Rev. Proc. 2025-32, Sec. 4.03).

Source: IRS Rev. Proc. 2025-32, Sec. 4.03 (2026 breakpoints). Short-term gains are taxed as ordinary income at the marginal rates above.

Because gains sit in a separate schedule, two people in the same ordinary bracket can face very different tax on their next dollar of income. For the full breakdown, see our 2026 capital gains tax rate guide.

Why your real marginal rate can exceed your bracket rate

Your statutory bracket rate is not always the true tax on your next dollar. Benefit taxation, surtaxes, Medicare surcharges, and payroll taxes can push the effective marginal rate above the bracket rate, especially in retirement. This gap surprises many taxpayers and is usually missing from basic bracket explainers.

Social Security tax torpedo

As other income rises, more of your Social Security benefits can become taxable, which raises the effective tax on each added dollar. Up to 50% of benefits become taxable once combined income exceeds $25,000 (single) or $32,000 (married filing jointly), and up to 85% above $34,000 (single) or $44,000 (married filing jointly) (Source: 26 U.S.C. Sec. 86; IRS Pub. 915).

These thresholds are fixed statutory amounts, not indexed for inflation, so more retirees cross them over time. Because each added dollar of other income can make an additional portion of benefits taxable, a retiree nominally in the 12% bracket can face a materially higher effective marginal rate, an effect often called the tax torpedo. The timing of required minimum distributions, which begin at age 73 (age 75 for those born in 1960 or later), can feed directly into this stacking.

NIIT, IRMAA, and payroll stacking

Several surtaxes and cliffs can add to your marginal rate. The Net Investment Income Tax adds 3.8% on investment income once modified adjusted gross income exceeds $200,000 (single) or $250,000 (married filing jointly), thresholds that are not indexed for inflation (Source: IRC Sec. 1411; IRS Topic 559). Our 2026 NIIT overview explains the mechanics.

Medicare’s income-related monthly adjustment amount (IRMAA) works as a cliff: crossing a threshold by even $1 can raise Part B and Part D premiums for the whole year, so the implicit tax on that last dollar can be very large. IRMAA surcharges begin above $109,000 in modified adjusted gross income for single filers and $218,000 for joint filers, using a two-year lookback (Source: SSA program rules; 2026 Part B base premium $202.90). On earned income, federal, state, and FICA payroll taxes (about 7.65% on the employee side) also stack, so the combined marginal rate on your next wage dollar is usually higher than the federal bracket alone.

What is bracket creep?

Bracket creep is when inflation pushes income into higher tax brackets even though real purchasing power has not risen. To limit it, the IRS adjusts most bracket thresholds and the standard deduction for inflation each year, which is why the 2026 figures differ from 2025 (Source: IRS Rev. Proc. 2025-32). Long-range plans also need an inflation rate assumption for retirement planning.

Not every threshold is indexed, though. The Social Security taxation base amounts (26 U.S.C. Sec. 86) and the NIIT thresholds (IRC Sec. 1411) are fixed statutory amounts with no inflation adjustment, so those specific phase-ins catch more taxpayers over time even as the ordinary brackets shift upward.

How can you reduce your marginal tax rate?

Several strategies can lower taxable income and, in some cases, your marginal bracket. The rules allow pretax retirement contributions, deductions, and tax-loss harvesting to reduce the income that reaches your top bracket. The right mix depends on individual circumstances, and each carries its own rules and trade-offs (Source: IRS, “Federal income tax rates and brackets”; IRS Notice 2025-67).

• Pretax contributions to a 401(k) or IRA reduce current taxable income. For 2026, the 401(k) elective deferral limit is $24,500 and the IRA limit is $7,500 (Source: IRS Notice 2025-67).
• Deductions (standard or itemized) lower the income point where your top bracket begins.
• Tax-loss harvesting can offset capital gains and, within limits, ordinary income.
• A Roth conversion is taxed at that year’s marginal rate; many households time conversions in lower-income years so the converted amount is taxed at a lower rate.

Because withdrawals from pretax accounts are later taxed at that year’s marginal rate, timing can matter as much as amount. Some investors weigh how much to convert to Roth in a given year and check a conversion break-even point before the annual December 31 conversion deadline. These are neutral descriptions of how the rules operate, not recommendations for any specific person.

Frequently asked questions

What is a marginal tax rate?

A marginal tax rate is the tax rate applied to your last (highest) dollar of taxable income, which is the rate of your top federal bracket. It is not the rate on your whole income. For 2026, the seven federal marginal rates are 10%, 12%, 22%, 24%, 32%, 35%, and 37% (Source: IRS Rev. Proc. 2025-32, Sec. 4.01).

What is the difference between marginal and average tax rates?

Average tax rate is another term for effective rate: total tax divided by total income. The marginal rate applies only to your next or last dollar. A 2026 single filer with $90,000 taxable income has a 22% marginal rate but an effective rate near 16.1%, because early dollars are taxed at 10% and 12% (Source: IRS Rev. Proc. 2025-32, Sec. 4.01). The same math at a lower income is worked through in how much tax someone making $40K pays.

How do you calculate your marginal tax rate?

Calculate your taxable income (total income minus your standard or itemized deduction), then find which 2026 bracket your top dollar falls into for your filing status. The rate on that bracket is your marginal rate. For a single filer, taxable income above $50,400 reaches the 22% bracket (Source: IRS Rev. Proc. 2025-32, Sec. 4.01 and 4.14).

What is the difference between marginal and effective tax rate?

The marginal rate is the rate on your last dollar of taxable income. The effective, or average, rate is total tax divided by total income. Because earlier dollars are taxed at lower bracket rates, the effective rate is almost always lower than the marginal rate under the federal graduated system (Source: IRS, “Federal income tax rates and brackets”). Both rates feed into your overall tax liability for the year.

Does moving into a higher tax bracket mean all my income is taxed at that rate?

No. Only the dollars that fall inside a given bracket are taxed at that bracket’s rate. Crossing into a higher bracket taxes just the new dollars at the higher rate; income already earned in lower brackets keeps its lower rates. A raise always increases your after-tax income (Source: IRS, “Federal income tax rates and brackets”).

What are the federal income tax brackets for 2026?

For 2026, the seven federal rates are 10%, 12%, 22%, 24%, 32%, 35%, and 37%. Single filers reach 22% above $50,400 and 37% above $640,600; married filing jointly filers reach 22% above $100,800 and 37% above $768,700 in taxable income (Source: IRS Rev. Proc. 2025-32, Sec. 4.01).

Is there a difference between state and federal marginal tax rates?

Yes. The rates above are federal only. Most states levy their own income tax, some flat and some graduated with their own brackets. Your combined marginal rate on the next dollar can include federal, state, and FICA payroll taxes stacked together, which is usually higher than the federal bracket alone (Source: IRS, “Federal income tax rates and brackets,” for the federal component).