At What Age Is Social Security No Longer Taxed?

Social Security benefits are never exempt from federal income tax based on age. There is no birthday at which Social Security is no longer taxed. Whether you owe tax on your benefits depends entirely on your total income for the year, measured against dollar thresholds Congress set in 1983 and 1993 and has never adjusted for inflation.¹ Because those numbers are frozen while incomes have risen, more retirees cross into taxable territory each year, regardless of how old they are.

A 70-year-old and a 90-year-old with the same income owe the same tax on their benefits. The question is not when you were born but what shows up on your return.

What Actually Determines Whether Your Benefits Are Taxed

The IRS uses a figure called combined income (sometimes called provisional income) to decide how much of your Social Security is taxable. The formula is straightforward: take your adjusted gross income, add any tax-exempt interest such as municipal bond income, then add half of your Social Security benefits for the year.² Adjusted gross income includes pensions, wages, traditional IRA and 401(k) withdrawals, investment income, and most other taxable sources.

Compare that number to the threshold for your filing status. Below it, none of your benefits are taxed. Above it, either 50% or 85% of your benefits get included in your taxable income. That does not mean you pay tax at a 50% or 85% rate. It means that portion is added to your taxable income and taxed at whatever ordinary bracket applies to you.

The Income Thresholds by Filing Status

Single, Head of Household, or Qualifying Surviving Spouse

If your combined income stays below $25,000, none of your Social Security is taxable.¹ Between $25,000 and $34,000, up to 50% of benefits may be included in taxable income. Above $34,000, up to 85% become taxable.²

Married Filing Jointly

Below $32,000 in combined income, benefits are tax-free. Between $32,000 and $44,000, up to 50% are taxable. Above $44,000, up to 85% are taxable.¹ Combined income includes both spouses’ income and half of both spouses’ benefits, so many couples clear $44,000 without realizing it.

Married Filing Separately

This one catches people off guard. If you are married, file a separate return, and lived with your spouse at any point during the year, your base amount is $0.¹ Up to 85% of your benefits are taxable from the first dollar of combined income. If you lived apart from your spouse for the entire year, you are treated as a single filer with the $25,000 and $34,000 thresholds.²

How Much of Your Benefits Actually Get Taxed

The taxable share is capped at 85% no matter how high your income climbs.² Within that ceiling the calculation phases in gradually, so someone barely over a threshold does not suddenly face a large tax bill.

An example makes it concrete. Say you are a single filer who received $20,000 in Social Security, plus $15,000 in pension income and $2,000 in tax-exempt interest. Your combined income is $15,000 + $2,000 + $10,000 (half of benefits) = $27,000. That falls between $25,000 and $34,000, putting you in the 50% tier. The taxable portion is the lesser of half your benefits ($10,000) or half the $2,000 excess over $25,000 ($1,000). You would include just $1,000 of your Social Security in taxable income for the year.

Push the same person’s other income high enough to clear $34,000 in combined income and the formula shifts to the 85% tier, adding 85 cents of taxable benefits for every dollar over the upper threshold until the 85% cap is reached.¹

How to Keep More of Your Benefits Untaxed

Since taxability turns on combined income rather than age, the way to protect your benefits is to manage what counts toward that number.

Draw From Roth Accounts

Qualified distributions from Roth IRAs and Roth 401(k)s do not show up in adjusted gross income, so they stay out of the combined income formula entirely. If you hold both traditional and Roth balances, pulling living expenses from the Roth side can keep combined income below the thresholds. The planning window often opens years before you claim benefits. Converting traditional IRA funds to a Roth while you are still working, or in early retirement, creates a tax bill now in exchange for withdrawals later that will not inflate your combined income during your benefit years.

Use Qualified Charitable Distributions

If you are 70½ or older and take required minimum distributions from a traditional IRA, a qualified charitable distribution lets you send up to $111,000 per year (the 2026 limit) directly from the IRA to a qualifying charity.³ The amount satisfies your required minimum distribution but is excluded from gross income, so it never lifts your combined income. For retirees who already give to charity, this is often the single most effective move to reduce Social Security taxation.

Time Lumpy Income

Combined income is calculated fresh every year. A large one-time event, such as selling an investment, cashing out a CD, or taking an unusually large retirement account withdrawal, can push you from the 50% tier into the 85% tier for that year alone. Where you have flexibility, spreading such income across multiple tax years keeps combined income closer to the lower thresholds. HSA withdrawals used for qualified medical expenses are not taxable and stay out of the calculation; non-medical HSA withdrawals are taxable and count.⁴

Two Things This Doesn’t Cover

Supplemental Security Income is a separate program. SSI payments are never subject to federal income tax and do not appear on Form SSA-1099.⁵ If SSI is your only income, you have no federal tax obligation on it, at any age.

State income tax is its own question. Most states do not tax Social Security. For the 2026 tax year, roughly eight states still impose some level of state income tax on benefits, and most of those offer partial exemptions based on income. Several states have repealed their Social Security taxes in recent years, and at least one additional state completed a multi-year phase-out effective in 2026. If you live in one of the states that still taxes benefits, checking the current rules is worthwhile because legislatures have been actively changing them.

Paying the Tax You Do Owe

The simplest way to handle the tax is to have the Social Security Administration withhold federal income tax from each monthly payment. You can choose a flat withholding rate of 7%, 10%, 12%, or 22%.⁶ No other percentages or custom dollar amounts are available. You can set this up by filing Form W-4V with the SSA, through your my Social Security account, or by phone.⁷

If you have significant income beyond Social Security, quarterly estimated payments using Form 1040-ES give you more precise control.⁸ For the 2026 tax year, the four deadlines are April 15, June 15, and September 15 of 2026, plus January 15, 2027.⁹ Many retirees do both, withholding a base amount from Social Security and making a smaller estimated payment to cover the gap.

1
Office of the Law Revision Counsel. 26 USC 86 – Social Security and Tier 1 Railroad Retirement Benefits
2
Internal Revenue Service. Publication 915 (2025), Social Security and Equivalent Railroad Retirement Benefits
3
Internal Revenue Service. 2026 Amounts Relating to Retirement Plans and IRAs, as Adjusted for Changes in Cost-of-Living
4
Internal Revenue Service. Health Savings Accounts and Other Tax-Favored Health Plans
5
Internal Revenue Service. Social Security Income
6
Internal Revenue Service. Form W-4V (Rev. January 2026) – Voluntary Withholding Request
7
Social Security Administration. Request to Withhold Taxes
8
Internal Revenue Service. Estimated Taxes
9
Internal Revenue Service. 2026 Form 1040-ES