What is the effective tax rate? Meaning, and how to work out yours

What the effective tax rate means

Cambridge Dictionary defines it as the actual amount of tax paid as a percentage of taxable income or profit. You work it out with one division: tax paid divided by income.

It answers a different question than your bracket does. Your bracket says what the tax rate is on your next dollar. The effective rate says what share of all your dollars went to tax.

Why it is lower than your bracket

The IRS describes income as taxed in layers called tax brackets: a higher rate applies only to the income in that layer, not to all of your income. The first slice is taxed at 10%, the next at 12%, and so on, so the average comes out below the top rate.

The standard deduction also pulls it down. For 2026 it is $16,100 for a single filer and $32,200 for a married couple filing jointly, and none of that income is taxed.

Which income to divide by

People divide by either taxable income (as in Cambridge's definition) or by total income. The second is the more useful one for a budget, because it shows how much of your full pay goes to federal income tax. Say which one you mean, and keep to it.

Federal income tax is only part. Social Security and Medicare take another 7.65% of wages, and your state may take more. For a couple, an effective rate on the combined income is a quick way to see why two incomes feel more heavily taxed than one.

A worked example: $65,000, single, 2026

• Taxable income: $65,000 - $16,100 standard deduction = $48,900.
• Tax: 10% of $12,400 = $1,240. 12% of ($48,900 - $12,400 = $36,500) = $4,380. Total: $5,620.
• Effective rate on taxable income: $5,620 / $48,900 = 11.5%.
• Effective rate on total income: $5,620 / $65,000 = 8.6%.
• Add Social Security and Medicare (7.65% of $65,000 = $4,972.50): $5,620 + $4,972.50 = $10,592.50, or 16.3% of $65,000.
• The top bracket reached was 12%, well above 8.6%.