How much of Social Security can be taxed?

Up to 85% of benefits, depending on your provisional income (other income + tax-exempt interest + half your benefits).

Social Security Tax Calculator — How Much Is Taxable?

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Social Security Tax

Taxable benefits • Provisional income

Filing status

Annual Social Security benefits

Other taxable income ⓘ

Tax-exempt interest (muni bonds)

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Enter your income to see what's taxable

How Social Security Taxation Works

Enter your benefits and other income.
We compute your "provisional income" (other income + half your benefits + tax-exempt interest).
See how much of your benefits is taxable — 0%, up to 50%, or up to 85%.

How Much of Social Security Is Taxable?

Up to 85% of Social Security benefits can be taxable, depending on your provisional income (also called combined income): your other taxable income, plus tax-exempt interest, plus half your benefits. For single filers, none is taxed below $25,000; up to 50% applies from $25,000–$34,000; up to 85% above $34,000. For joint filers the thresholds are $32,000 and $44,000.

Because these thresholds aren't inflation-adjusted, more retirees hit the "tax torpedo" each year — where each extra dollar of income makes more of your benefits taxable, spiking your effective tax rate. Roth conversions and QCDs can help manage it. Estimate only; not tax advice.

Social Security Tax FAQ

Is Social Security ever fully tax-free? ▾

Yes — if your provisional income is below $25,000 (single) or $32,000 (joint), none of your benefits are taxable. Many lower-income retirees pay no tax on benefits.

What is the "tax torpedo"? ▾

As income rises through the thresholds, each extra dollar can make 50–85 cents of benefits newly taxable, pushing your effective marginal rate well above your bracket — a stealth tax on middle-income retirees.

Does my state tax Social Security? ▾

Most states don't, but a few do. This calculator covers federal taxation only.