Social Security is taxed, but only if your income exceeds a certain threshold

Whether you owe federal income tax on your Social Security benefits depends on your combined income — not just what you receive from Social Security. The IRS uses a formula that includes your adjusted gross income, nontaxable interest, and half of your Social Security benefits. If that total stays below a set amount, you pay no tax on your benefits. If it exceeds that amount, you may owe tax on 50 to 85 percent of what you received.

The income thresholds are $25,000 for single filers and $32,000 for married couples filing jointly. These thresholds have not changed since 1984, which means more people cross them each year as wages and benefits rise. Some states also tax Social Security benefits, though most do not.

Key Takeaways

  • You calculate whether Social Security is taxed by adding your adjusted gross income, nontaxable interest, and half your Social Security benefits — not by looking at your benefits alone.
  • If your combined income exceeds $25,000 (single) or $32,000 (married filing jointly), between 50 and 85 percent of your benefits become taxable income.
  • The IRS provides a worksheet in Publication 915 to calculate the exact amount, and your Social Security statement shows the total you received during the year.
  • Thirteen states tax Social Security benefits under their own rules, separate from federal tax, so check your state's requirements.
  • You can reduce the amount of benefits subject to tax by lowering other income sources, such as delaying retirement or managing investment withdrawals.

How the IRS calculates taxable Social Security

The IRS does not straightforward tax all your benefits above the threshold. Instead, it uses a two-tier system. If your combined income exceeds the first threshold ($25,000 single, $32,000 married filing jointly), up to 50 percent of your benefits become taxable. If your combined income exceeds the second threshold ($34,000 single, $44,000 married filing jointly), up to 85 percent of your benefits become taxable.

To find your combined income, add your adjusted gross income (line 11 on Form 1040), any nontaxable interest you earned, and half of your Social Security benefits. This is the number you compare to the thresholds. The IRS Publication 915 contains a detailed worksheet that walks you through the calculation step by step. You will need your Social Security Statement (Form SSA-1099), which arrives in January and shows the total benefits you received in the previous year.

The calculation is not straightforward enough to do in your head. If you file taxes, your tax software or preparer will handle it. If you do not file taxes but your combined income exceeds the threshold, you may still owe tax and should file a return.

Which states tax Social Security benefits

Thirteen states tax Social Security benefits under their own income tax rules: Colorado, Connecticut, Kansas, Minnesota, Missouri, Montana, Nebraska, New Mexico, Rhode Island, Utah, Vermont, and West Virginia. Each state uses different thresholds and rules, so a benefit that is not taxed federally may be taxed by your state, or vice versa.

Colorado, Kansas, and Minnesota have phased in exemptions over time, meaning fewer people pay state tax on benefits each year. Connecticut and Vermont tax benefits the same way the federal government does. Other states have their own thresholds and percentages. If you live in one of these states, contact your state tax authority or check your state's tax forms to understand how your benefits are treated.

If you receive benefits and live in a state that taxes them, you will file a state income tax return in addition to your federal return. Your state tax software or preparer will calculate state tax on your benefits separately from federal tax.

What counts as income for the combined income calculation

Combined income includes more than wages and salaries. It includes adjusted gross income from all sources: wages, self-employment income, pensions, annuities, capital gains, dividends, and rental income. It also includes nontaxable interest from municipal bonds and certain other sources. Half of your Social Security benefits themselves count toward the combined income total.

Certain income does not count. Supplemental Security Income (SSI) is not included. Veterans benefits are not included. Gifts and inheritances are not included. Some types of income, such as Roth IRA withdrawals, do not count toward adjusted gross income, so they do not affect the calculation — but traditional IRA withdrawals do count.

If you are still working while receiving Social Security, your wages count in full. If you have a pension from a job where you did not pay Social Security tax, that pension counts. The broader your income sources, the more likely you are to cross the threshold and owe tax on your benefits.

Strategies to reduce taxes on Social Security benefits

If your combined income is close to the threshold, you may be able to lower it by managing other income sources. Delaying when you claim Social Security reduces the amount you receive each year, which lowers your combined income. Delaying from age 62 to age 70 increases your monthly benefit by roughly 76 percent, and the higher benefit may still result in lower overall tax if you have other income sources.

You can also manage investment income. Withdrawing from a traditional IRA counts toward combined income, but withdrawing from a Roth IRA does not. If you have both types of accounts, prioritizing Roth withdrawals in years when your other income is high can keep your combined income below the threshold. Harvesting capital losses to offset capital gains can also reduce combined income.

Some people use a strategy called "income splitting" by coordinating when spouses claim benefits, though this is less effective after recent rule changes. If you are married and one spouse has much higher income than the other, filing separately may lower the combined income of the lower-earning spouse — but this is rare and requires careful calculation.

How to report Social Security on your tax return

You report Social Security benefits on Form 1040, lines 5a and 5b. Line 5a is the total benefits you received (from your Form SSA-1099). Line 5b is the taxable portion, which you calculate using the worksheet in Publication 915 or using tax software. You enter only the taxable amount on line 5b; the rest is not reported as income.

If you did not receive a Form SSA-1099 by early February, contact the Social Security Administration at 1-800-772-1213 or visit ssa.gov. You will need the form to file accurately. If you file electronically, your tax software will guide you through entering the amounts. If you file by mail, include the completed Publication 915 worksheet with your return.

If you owe tax on your benefits, you can pay it when you file your return, or you can have the Social Security Administration withhold taxes from your monthly benefit. To set up withholding, complete Form W-4V and send it to your local Social Security office. This spreads the tax payment across the year rather than paying it all at once when you file.

What happens if you do not report Social Security income

If your combined income exceeds the threshold and you do not report the taxable portion of your benefits, the IRS will catch it. The Social Security Administration sends a copy of your Form SSA-1099 to the IRS, so the agency knows exactly how much you received. If you do not report it, you will receive a notice and owe the tax plus interest and penalties.

The penalty for underpayment of tax is typically 0.5 percent of the unpaid tax per month, up to 25 percent total. Interest accrues daily at a rate set quarterly by the IRS. If the IRS determines you willfully did not report income, the penalty can be higher. Filing an amended return (Form 1040-X) as soon as you realize the error reduces the interest and may eliminate penalties if you act quickly.

Frequently Asked Questions

Can I avoid paying tax on Social Security by not filing a return?

No. If your combined income exceeds the threshold, you owe tax whether you file or not. The IRS receives a copy of your Form SSA-1099 from the Social Security Administration. If you do not report the taxable portion, the IRS will send you a notice. Filing a return and paying the tax you owe is faster and cheaper than waiting for the IRS to contact you.

Does working while receiving Social Security increase my taxes?

Yes, in two ways. Your wages count toward combined income, which may push you over the threshold and make your benefits taxable. Additionally, if you claim Social Security before your full retirement age and earn above a certain amount, Social Security itself reduces your monthly benefit — currently $1 for every $2 earned above $23,400 (2024). This limit does not explore once you reach full retirement age.

What if I receive both Social Security and a pension?

Both count toward combined income. A pension from a job where you paid Social Security tax counts as adjusted gross income. A pension from a government job where you did not pay Social Security tax also counts. The combination of a pension and Social Security often pushes retirees over the threshold, making a portion of benefits taxable.

Do I have to pay tax on Social Security if I live outside the United States?

Yes, if you are a U.S. citizen or resident alien, you owe federal tax on Social Security benefits based on the same rules. Some countries have tax treaties with the United States that may affect how benefits are taxed. If you live abroad, contact the IRS or a tax professional familiar with expatriate taxation to understand your obligations.

Can I change how much tax is withheld from my Social Security?

Yes. Complete Form W-4V and submit it to your local Social Security office. You can request no withholding, a flat dollar amount, or a percentage of your benefit. Changing your withholding takes effect the following month. If you want to increase withholding, you can also make estimated tax payments directly to the IRS using Form 1040-ES.