What is the difference between marginal and effective tax rate?

Your marginal rate is the tax on your last dollar earned — your bracket. Your effective rate is total tax divided by total income, which is always lower because earlier dollars were taxed in lower brackets. A single filer earning $80,000 is in the 22% bracket but pays about 12% effective.

Does moving into a higher bracket lower my take-home pay?

No — this is the most common tax myth. Only the dollars above the bracket threshold are taxed at the higher rate; everything below keeps its lower rates. A raise never reduces your after-tax income under the bracket system.

Income Tax Calculator (2025 Federal)

Q: What are the 2025 federal tax brackets?

For single filers (taxable income): 10% up to $11,925; 12% to $48,475; 22% to $103,350; 24% to $197,300; 32% to $250,525; 35% to $626,350; 37% above. Married-filing-jointly thresholds are roughly double through the 32% bracket.

Q: What is the 2025 standard deduction?

$15,000 for single filers and $30,000 for married filing jointly. It reduces your taxable income before brackets apply; about 90% of filers take it instead of itemizing.

Estimate your federal income tax with the official 2025 IRS brackets — and see the difference between the bracket you're "in" and the rate you actually pay.

Estimated federal income tax

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Taxable income

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Marginal rate (your bracket)

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Effective rate

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After federal tax

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Bracket	Income taxed in it	Tax

How U.S. brackets actually work

Brackets are marginal: each chunk of income is taxed at its own rate, like water filling stacked buckets. Landing "in the 22% bracket" means only the dollars above the 12% bracket's ceiling are taxed at 22% — never your whole income.

Taxable income = Gross − Pre-tax deductions − Standard (or itemized) deduction
Tax = Σ (income in each bracket × that bracket's rate)

Worked example — $80,000, single, 2025

Taxable income: 80,000 − 15,000 standard deduction = $65,000

10% × 11,925 = $1,193 · 12% × 36,550 = $4,386 · 22% × 16,525 = $3,636

Total ≈ $9,215 → effective rate 11.5% of gross, despite being "in the 22% bracket."

2025 federal brackets (taxable income)

Rate	Single	Married filing jointly
10%	$0 – $11,925	$0 – $23,850
12%	to $48,475	to $96,950
22%	to $103,350	to $206,700
24%	to $197,300	to $394,600
32%	to $250,525	to $501,050
35%	to $626,350	to $751,600
37%	above	above

Source: IRS Rev. Proc. 2024-40 (2025 tax year inflation adjustments). This estimate covers federal income tax only — payroll taxes (Social Security and Medicare) are handled in the take-home pay calculator, and most states add their own income tax on top. Pre-tax retirement contributions reduce this bill directly, which is part of the 401(k) case.

Frequently asked questions

What are the 2025 federal tax brackets?

Single: 10% to $11,925, 12% to $48,475, 22% to $103,350, 24% to $197,300, 32% to $250,525, 35% to $626,350, 37% above. MFJ thresholds are roughly double through 32%.

Marginal vs. effective rate?

Marginal = rate on your last dollar (your bracket). Effective = total tax ÷ total income — always lower.

Does a higher bracket lower my take-home pay?

No — only dollars above each threshold are taxed at the higher rate. A raise never reduces after-tax income.

What is the 2025 standard deduction?

$15,000 single / $30,000 married filing jointly.

Related calculators

Note: Federal income tax only, for tax year 2025, assuming no credits (child tax credit, EITC, etc.), which can change results substantially. Not tax advice — consult a professional or IRS.gov for your situation. Brackets: 2025 tax year (IRS Rev. Proc. 2024-40). Last reviewed: July 2026.