Is Social Security taxable?

Key points

• Social Security can be taxable. Depending on your income, up to 50% or up to 85% of your benefits count as taxable income. The tax code caps it at 85%: at least 15% of your benefits is always tax free.
• The test adds half your benefits to your other income, including tax-exempt interest. Above $25,000 for a single filer ($32,000 on a joint return), up to 50% can be taxable. Above $34,000 ($44,000 joint), up to 85%.
• These dollar amounts are fixed in the tax code. They are not adjusted for inflation, while benefits rise with each cost-of-living increase.
• Married and filing separately after living with your spouse at any time in the year: both thresholds are zero.
• Federal withholding from benefits is voluntary. Form W-4V offers 7%, 10%, 12% or 22%.
• The senior deduction for 2025 through 2028 lowers taxable income. It does not change how much of your benefits is taxable.

Social Security benefits are the monthly retirement, survivor and disability payments from the Social Security Administration (SSA). For how benefits are figured and claimed, see our guide to Social Security benefits. This guide answers one question: how much of them the IRS taxes.

It covers federal income tax only. State tax on benefits is not covered here.

We checked every rule and figure against the tax code, IRS publications and forms, and SSA pages on October 27, 2026. The sources are listed at the end.

How much of your Social Security is taxable?

None, up to half, or up to 85%, depending on a test set out in IRS Publication 915. Add half of your benefits for the year to all your other income, including tax-exempt interest such as municipal bond interest. Then compare the total with two thresholds for your filing status.

Half your benefits plus other income	Single or head of household	Married filing jointly	Taxable part of benefits
At or below the first threshold	$25,000	$32,000	None
Between the two thresholds	$25,000 to $34,000	$32,000 to $44,000	Up to 50%
Above the second threshold	Over $34,000	Over $44,000	Up to 85%

“Up to” matters. Crossing $34,000 does not make 85% of your benefits taxable. Only the income above each threshold pulls benefits in, so the taxable share climbs gradually toward 85%. In our second example below, a single filer at $45,000 on the test has 46% of their benefits taxable.

The ceiling is in the statute. The amount included in income can never be more than “85 percent of the social security benefits received during the taxable year.”

The tax code gives this total no name. Congressional researchers and SSA’s research papers call it provisional income; SSA’s benefit pages call it combined income. Our guide to provisional income gives the exact formula, the IRS worksheet line by line, and what does and does not count.

Supplemental Security Income (SSI) is different. In the IRS’s words, Social Security benefits “don’t include Supplemental Security Income (SSI) payments, which aren’t taxable.”

What are the thresholds for each filing status?

The tax code calls the first threshold the base amount and the second the adjusted base amount.

Filing status	First threshold (up to 50%)	Second threshold (up to 85%)
Single, head of household or qualifying surviving spouse	$25,000	$34,000
Married filing jointly	$32,000	$44,000
Married filing separately, lived apart from your spouse all year	$25,000	$34,000
Married filing separately, lived with your spouse at any time in the year	$0	$0

On a joint return, both spouses’ income and benefits go into one test. The IRS says that even if your spouse got no benefits, “you must add your spouse’s income to yours.”

If Social Security was your only income, your benefits “generally aren’t taxable,” the IRS says, and you probably do not have to file a return. With no other income, a single filer’s benefits would have to be more than $50,000 for the year before half of them passed $25,000.

Married filing separately

This status gets the strictest rule. If you lived with your spouse at any time during the year, both thresholds are zero. The IRS worksheet tells you to take 85% of half your benefits plus your other income, and the result is capped at 85% of your benefits.

If you lived apart from your spouse for the whole year, you use the single thresholds instead, and you check a box on Form 1040 to say so. Our calculators do not handle this case: they apply the lived-together rule to every married filing separately return, so for someone who lived apart all year they can show too much tax.

Why the thresholds do not rise with inflation

The 50% tier dates from the Social Security Amendments of 1983 and the 85% tier from a 1993 law. Neither threshold has ever been indexed. SSA’s research office puts it plainly: “Because the taxable-income thresholds are not indexed to changes in prices or wages in the national economy, the taxable proportion of aggregate benefit income has risen over time.”

Benefits, by contrast, are adjusted for inflation through the yearly cost-of-living adjustment. The Congressional Research Service reports that the taxable share of all benefits grew from 12.2% in 1994 to 38.2% in 2022.

Worked examples for 2026

Four retirees, each with a pension and Social Security and no other income. We use the 2026 tax brackets, the 2026 standard deduction, the extra standard deduction for people 65 and older, and the senior deduction where it applies. The figures come from the same federal tax engine our calculators use, and we recomputed each one separately, step by step, with IRS Publication 915, Worksheet 1.

Filer	Benefits	Pension	Half the benefits plus the pension	Taxable benefits
Single, 67	$24,000	$10,000	$22,000	$0
Single, 70	$30,000	$30,000	$45,000	$13,850 (46%)
Married filing jointly, both 70	$50,000	$40,000	$65,000	$23,850 (48%)
Married filing separately, lived together, 70	$20,000	$15,000	$25,000	$17,000 (85%)

The single filer at 70

Half of $30,000 is $15,000. Add the $30,000 pension: $45,000, which is $11,000 over the $34,000 threshold.

1. The band from $25,000 to $34,000 is $9,000 wide. Half of it, $4,500, is taxable.
2. 85% of the $11,000 above $34,000 is $9,350.
3. Together: $13,850 of benefits is taxable. The cap, 85% of $30,000, is $25,500, so it does not bind.

Adjusted gross income is the $30,000 pension plus the $13,850: $43,850. The deductions total $24,150: the $16,100 standard deduction, $2,050 extra for a single filer 65 or older, and the full $6,000 senior deduction. Taxable income is $19,700, and the 2026 federal tax is $2,116.

The joint filers

Half of $50,000 is $25,000. With the $40,000 pension, the total is $65,000. The first band on a joint return is $12,000 wide, so $6,000 is taxable from it, plus 85% of the $21,000 above $44,000, which is $17,850. Taxable benefits: $23,850.

Their deductions are $47,500: the $32,200 joint standard deduction, $1,650 extra for each spouse 65 or older, and $6,000 each in senior deductions. Taxable income is $16,350 and the 2026 tax is $1,635.

The separate filers who lived together

Half of $20,000 plus the $15,000 pension is $25,000. With a zero threshold, 85% of that is $21,250, more than the cap of 85% of benefits. So $17,000 is taxable. They cannot take the senior deduction, because it requires a joint return if you are married. We assume the other spouse also takes the standard deduction: if one spouse itemizes, the other cannot take it. Their deductions are $17,750, the $16,100 standard deduction plus $1,650, and the tax on $14,250 of taxable income is $1,462.

Had they lived apart all year, the single thresholds would apply and none of the $20,000 would be taxable.

We figure tax with the IRS rate schedules. On a return, taxable income under $100,000 is looked up in the IRS Tax Table, which can differ by a few dollars. The IRS had not published the 2027 brackets and standard deduction when we checked on October 27, 2026.

Does the senior deduction make Social Security tax free?

No. The One Big Beautiful Bill Act, signed July 4, 2025, added a deduction for people 65 and older. It did not change the section of the tax code that decides how much of your benefits is taxable.

The deduction in brief:

• $6,000 for each person 65 or older by the end of the year, so $12,000 for a married couple who both qualify.
• For tax years 2025 through 2028.
• It shrinks by 6% of modified adjusted gross income over $75,000, or $150,000 on a joint return.
• Married couples must file jointly to claim it. Each person claiming it needs a valid Social Security number on the return.
• It is in addition to the extra standard deduction for 65 and older, and you can claim it whether or not you itemize.

On the 2025 Form 1040, taxable benefits are still worked out on line 6b. The senior deduction comes in later, on line 13b, from Schedule 1-A. It lowers taxable income from all sources. It does not lower the taxable part of your benefits.

Take the single filer at 70 above. Their taxable benefits are $13,850 with or without the senior deduction. With it, their 2026 tax is $2,116. Without it, at the same 2026 rates, it would be $2,836.

The Social Security Trustees describe the effect the same way: the law “effectively reduces taxable income for many Social Security beneficiaries,” so less income tax will be paid on benefits. For some people that brings the tax to zero, but the taxable part of their benefits is still counted in income. Above $75,000 of income ($150,000 joint), the deduction’s phase-out can also push up the tax on each extra dollar; our provisional income guide shows how.

What is on Form SSA-1099?

SSA sends Form SSA-1099, the Social Security Benefit Statement, for each year you get benefits. The IRS says it should arrive by early February. You can also download it from your online Social Security account.

Box	What it shows	What you do with it
3	Benefits paid in the year	Background
4	Benefits you repaid to SSA in the year	Subtracted in box 5
5	Net benefits: box 3 minus box 4	The figure for the tax test and Form 1040, line 6a
6	Voluntary federal income tax withheld	Claim it as tax withheld on your return

Box 5 includes any Medicare premiums SSA took out of your checks. The IRS is explicit: “Don’t reduce the amount of net social security benefits (box 5)” by them.

If you received a lump sum in the year for an earlier year, a special election in Publication 915 can lower the taxable amount. And if SSI is the only payment you get from SSA, it does not send you a tax form.

Can you have federal tax withheld from Social Security?

Yes, if you ask. Withholding from benefits is voluntary. Form W-4V lets you choose 7%, 10%, 12% or 22% of each payment, “but no other percentage or amount.”

• You can start, change or stop it in your online Social Security account, by calling SSA at 1-800-772-1213, or by giving SSA a completed Form W-4V. It goes to SSA, not the IRS.
• The rate stays in effect until you change or stop it.
• The alternatives are estimated tax payments, or more withholding from other income such as a pension.
• The total withheld for the year shows in box 6 of your Form SSA-1099.

For scale: in the single example above, 7% of $30,000 of benefits is $2,100 for the year, against a federal tax bill of $2,116.

Common questions

Does your age change whether Social Security is taxed?

No. The test in section 86 of the tax code has no age in it. It works the same at 62, 67 or 80. Age changes your deductions, through the extra standard deduction and, for 2025 through 2028, the senior deduction.

Are disability and survivor benefits taxed the same way?

Yes. Publication 915 covers “monthly retirement, survivor, and disability benefits” under the same rules.

Who pays tax on a child’s benefits?

The person with the legal right to the benefits. If a child gets benefits, they are counted on the child’s tax test, not the parent’s, even if the check is made out in the parent’s name.

Where does the tax on benefits go?

Back to the trust funds. Under current law, tax on up to the first 50% of benefits is credited to the Social Security trust funds, and the rest to Medicare’s Hospital Insurance trust fund. For what the trust fund projections say, see our guide to Social Security trust fund depletion.

Do RMDs make more of your Social Security taxable?

They can, because an RMD from a traditional IRA counts in the test. Our guide to how RMDs are taxed runs an example, and our guide to lowering RMDs covers the planning. To see what an IRA withdrawal adds to your federal tax with your own Social Security, use the RMD calculator; it has a field for tax-exempt interest, which counts in the test. Our Social Security calculator estimates the check at each claiming age; it leaves out income tax.

About this guide

Written by the Diversify Guy editorial desk. Diversify Guy is a pen name. It is the byline of our editorial team, not a single individual. We do not publish personal trading records or claim to be your adviser. We tell you where every figure came from so you can check it yourself. How we work and how we get paid.

This guide explains federal rules. It is not personalized tax or investment advice. Diversify Guy earns affiliate commissions and advertising fees from companies featured elsewhere on the site. This page carries no ads and no affiliate links.

Sources and check dates

All sources were fetched and checked on October 27, 2026.

• Internal Revenue Code section 86, Social Security and tier 1 railroad retirement benefits (Cornell LII): https://www.law.cornell.edu/uscode/text/26/86
• Internal Revenue Code section 86, U.S. Code 2024 edition (GovInfo): https://www.govinfo.gov/content/pkg/USCODE-2024-title26/html/USCODE-2024-title26-subtitleA-chap1-subchapB-partII-sec86.htm
• Internal Revenue Code section 151(d)(5)(C), deduction for seniors (Cornell LII): https://www.law.cornell.edu/uscode/text/26/151
• IRS Publication 915 (2025), Social Security and Equivalent Railroad Retirement Benefits: https://www.irs.gov/publications/p915 (PDF: https://www.irs.gov/pub/irs-pdf/p915.pdf)
• IRS Topic no. 423, Social Security and equivalent railroad retirement benefits: https://www.irs.gov/taxtopics/tc423
• IRS Form W-4V (Rev. January 2026), Voluntary Withholding Request: https://www.irs.gov/pub/irs-pdf/fw4v.pdf
• IRS Revenue Procedure 2025-32, 2026 tax rate tables and standard deduction: https://www.irs.gov/pub/irs-drop/rp-25-32.pdf
• IRS, tax deductions for working Americans and seniors (senior deduction): https://www.irs.gov/newsroom/working-families-tax-cuts-tax-deductions-for-working-americans-and-seniors
• IRS, check your eligibility for the enhanced deduction for seniors: https://www.irs.gov/newsroom/check-your-eligibility-for-the-new-enhanced-deduction-for-seniors
• 2025 Form 1040 and Schedule 1-A (Form 1040): https://www.irs.gov/pub/irs-pdf/f1040.pdf and https://www.irs.gov/pub/irs-pdf/f1040s1a.pdf
• 2025 Instructions for Form 1040 (Tax Table rule): https://www.irs.gov/instructions/i1040gi
• SSA, Request to withhold taxes: https://www.ssa.gov/manage-benefits/request-withhold-taxes
• SSA, Get tax form (1099/1042S): https://www.ssa.gov/manage-benefits/get-tax-form-10991042s
• SSA Office of Retirement Policy, Issue Paper 2015-02, Income Taxes on Social Security Benefits: https://www.ssa.gov/policy/docs/issuepapers/ip2015-02.html
• 2026 Annual Report of the Social Security Board of Trustees: https://www.ssa.gov/oact/TR/2026/tr2026.pdf
• Congressional Research Service, Social Security Benefit Taxation Highlights (IF11397, updated September 23, 2024): https://congress.gov/crs_external_products/IF/PDF/IF11397/IF11397.3.pdf
• Congressional Research Service, Social Security: Taxation of Benefits (RL32552, updated June 12, 2020): https://congress.gov/crs_external_products/RL/PDF/RL32552/RL32552.45.pdf