Question 1

What is a marginal tax rate?

Accepted Answer

Your marginal tax rate is the percentage of tax applied to your last dollar of taxable income. It represents the highest federal tax bracket you fall into. For example, if your marginal rate is 22%, only the income within the 22% bracket is taxed at that rate — not all of your income.

Question 2

What are the federal tax brackets for 2025?

Accepted Answer

For 2025, the seven federal income tax brackets for single filers are: 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), and 37% (over $626,350). Brackets are wider for married filing jointly and head of household.

Question 3

What is the difference between marginal and effective tax rate?

Accepted Answer

Your marginal tax rate is the rate on your last dollar of income — the bracket you're currently in. Your effective tax rate is the average rate across all your income, calculated by dividing total tax owed by total taxable income. Because of progressive taxation, your effective rate is always lower than your marginal rate.

Question 4

How does progressive taxation work?

Accepted Answer

Progressive taxation means your income is taxed in layers. The first portion of your income is taxed at the lowest rate (10%), the next portion at 12%, and so on up through the brackets. Moving into a higher bracket only affects the income above that threshold — it doesn't increase the tax on income already taxed at lower rates.

Rate	From	To	Taxable	Tax
10.00%	$0	$12,400	$12,400	$1,240
12.00%	$12,400	$50,400	$38,000	$4,560
22.00%	$50,400	$58,900	$8,500	$1,870

Marginal Tax Rate Calculator (2025)

Marginal vs. Effective Rate by Income

Tax Bracket Breakdown

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