What is the difference between marginal and effective tax rate?

Your marginal tax rate is the rate on your last dollar earned. Your effective tax rate is total tax divided by total income — a much lower figure. A $75,000 earner in the 22% bracket typically has an effective rate of around 13–15%.

FICA funds Social Security (6.2% on wages up to $168,600) and Medicare (1.45% on all wages, plus 0.9% surcharge on wages over $200,000). Your employer matches these contributions.

What are the 2026 federal income tax brackets?

For 2026, the seven federal brackets are: 10% up to $11,925, 12% up to $48,475, 22% up to $103,350, 24% up to $197,300, 32% up to $250,525, 35% up to $626,350, and 37% above $626,350 (single filers). Married filing jointly thresholds are roughly double. These are marginal rates — only income in each bracket is taxed at that rate.

What is the standard deduction for 2026?

The 2026 standard deduction is $15,000 for single filers and $30,000 for married filing jointly, with an additional $1,600 for those 65+ or blind. Most taxpayers take the standard deduction rather than itemizing — itemizing only makes sense if deductions (mortgage interest, state taxes, charitable gifts) exceed the standard amount.

How do I calculate my effective tax rate?

Effective tax rate = total federal tax paid ÷ total taxable income. It is always lower than your marginal rate because different portions of income are taxed at different rates. A single filer with $80,000 taxable income pays roughly $13,250 in federal tax — an effective rate of about 16.6%, despite being in the 22% marginal bracket.

Tax Calculator 2024

Estimate your federal income tax, state tax, and FICA using 2024 IRS tax brackets. Shows effective rate and take-home pay.

Annual Income

Standard Deduction

State Tax Rate

Estimated Take-Home Pay

Federal Tax$0

State Tax$0

FICA (SS+Medicare)$0

Total Tax$0

Based on 2024 single filer brackets. For estimation only — consult a tax professional for advice.

📐 Formula

Federal Tax = Sum of (income in each bracket × bracket rate). Effective Rate = Total Tax / Gross Income × 100

Frequently Asked Questions

For single filers in 2024: 10% on income up to $11,600; 12% up to $47,150; 22% up to $100,525; 24% up to $191,950; 32% up to $243,725; 35% up to $609,350; 37% above that.

The 2024 standard deduction is $14,600 for single filers, $29,200 for married filing jointly, and $21,900 for head of household. It reduces your taxable income.

FICA is Social Security (6.2% on wages up to $168,600) plus Medicare (1.45% on all wages, plus 0.9% on wages over $200,000). Your employer matches these contributions.

How Does the US Federal Income Tax System Work?

The US uses a progressive marginal tax system — meaning different portions of your income are taxed at different rates. You don't pay the top rate on all your income; you pay each rate only on income within that bracket. This is one of the most commonly misunderstood aspects of the US tax system.

2024 Federal Income Tax Brackets (Single Filers)

Tax Rate	Income Range	Tax on This Bracket
10%	$0 – $11,600	Up to $1,160
12%	$11,601 – $47,150	Up to $4,266
22%	$47,151 – $100,525	Up to $11,742
24%	$100,526 – $191,950	Up to $21,953
32%	$191,951 – $243,725	Up to $16,563
35%	$243,726 – $609,350	Up to $128,057
37%	Over $609,350	37% on excess

Marginal Tax Rate vs Effective Tax Rate — What's the Difference?

Your marginal tax rate is the rate on your last dollar earned — if you're in the 22% bracket, new income is taxed at 22%. Your effective tax rate is your total tax divided by total income — a much lower figure. A $75,000 earner in the 22% bracket has an effective rate of around 13–15%, not 22%.

How to Reduce Your Tax Bill Legally

401k and IRA contributions — reduce taxable income dollar for dollar. In 2024, you can contribute up to $23,000 to a 401k and $7,000 to an IRA.
Health Savings Account (HSA) — triple tax advantage: contributions deductible, growth tax-free, withdrawals tax-free for medical expenses.
Standard vs itemised deductions — take whichever is larger. In 2024, the standard deduction is $14,600 (single), $29,200 (married filing jointly).
Tax-loss harvesting — sell investments at a loss to offset capital gains.

What is FICA Tax?

FICA (Federal Insurance Contributions Act) taxes fund Social Security and Medicare. In 2024: Social Security is 6.2% on wages up to $168,600, and Medicare is 1.45% on all wages (plus 0.9% surcharge on wages over $200,000). Your employer matches these contributions — self-employed individuals pay the full 15.3% as self-employment tax.