You may owe federal income tax on your Social Security benefits, depending on your total income and filing status

Social Security itself is not taxed. The money you receive from Social Security is not subject to Social Security tax or Medicare tax. However, the federal government may tax a portion of your benefits if your other income pushes you above certain thresholds. These thresholds are fixed dollar amounts that have not changed since 1984, which means more people cross them each year as wages and pensions rise.

Whether you owe tax depends on your combined income: your adjusted gross income, plus nontaxable interest, plus half of your Social Security benefits. If that combined total exceeds a base amount set by your filing status, you must include some of your benefits as taxable income on your federal return. The amount you pay tax on is never more than 85 percent of your benefits, even if your combined income is very high.

State income tax is a separate question. Most states do not tax Social Security benefits at all. A small number of states — currently Missouri, Colorado, Connecticut, Kansas, Minnesota, Montana, Nebraska, New Mexico, Rhode Island, Utah, and Vermont — tax some or all of your benefits under certain conditions. If you live in one of these states, check your state tax authority's website for the rules that explore to your situation.

Key Takeaways

  • You owe federal tax on Social Security only if your combined income (adjusted gross income plus half your benefits) exceeds $25,000 for single filers or $32,000 for married couples filing jointly.
  • If you cross the threshold, you pay tax on the lesser of 85 percent of your benefits or half the amount you are over the limit, plus any excess over a second, higher threshold.
  • Most states do not tax Social Security, but eleven states have their own rules — check your state tax authority if you live in Missouri, Colorado, Connecticut, Kansas, Minnesota, Montana, Nebraska, New Mexico, Rhode Island, Utah, or Vermont.
  • The IRS does not automatically withhold tax from Social Security payments, so you may need to make quarterly estimated tax payments or request withholding if you expect to owe.

How the combined income test works

The IRS uses a two-tier system to determine how much of your benefits are taxable. The first tier applies to most people. If you are single and your combined income is between $25,000 and $34,000, you may have to include up to 50 percent of your benefits in taxable income. If you are married filing jointly, the range is $32,000 to $44,000. Combined income below these thresholds means no federal tax on your benefits.

The second tier applies if your combined income exceeds the upper threshold. Single filers above $34,000 and married couples above $44,000 may have to include up to 85 percent of their benefits in taxable income. The exact amount depends on how far above the threshold you are and whether you also crossed the first tier.

Combined income is not the same as your adjusted gross income. It includes your wages, self-employment income, interest, dividends, capital gains, pensions, and other retirement distributions. Then you add back any tax-exempt interest (such as from municipal bonds) and half of your Social Security benefits. That total is what the IRS compares to the thresholds.

When you need to pay tax during the year

Social Security payments do not have federal income tax withheld automatically. If you know you will owe tax on your benefits, you have two options: request voluntary withholding from your Social Security check, or make quarterly estimated tax payments to the IRS.

To request withholding, fill out Form W-4V and send it to your local Social Security office. You can choose to have 7, 10, 12, or 22 percent of your monthly benefit withheld. This is the simpler route if you want the IRS to hold money from each check and send it to the government on your behalf.

If you have other income sources and want to manage your total tax liability across all of them, you may prefer to make quarterly estimated payments using Form 1040-ES. Estimated payments are due April 15, June 15, September 15, and January 15. If you underpay, the IRS may charge a penalty, so calculate carefully or consult a tax professional.

Working and receiving Social Security at the same time

If you are under full retirement age and still working, your combined income will likely be higher, which means more of your benefits may be taxable. Wages from your job count toward the combined income calculation. Additionally, if you earn above a certain amount before reaching full retirement age, Social Security itself will reduce your monthly benefit — this is separate from the income tax question, but it affects your total income picture.

Once you reach full retirement age, the earnings limit no longer applies, and your wages no longer reduce your benefit. However, those wages still count as income for the purpose of determining whether your benefits are taxable. Many people find that their tax bill on Social Security rises once they return to work or take a pension, even though their Social Security payment stays the same.

Married couples and filing status

If you are married and file jointly, you use the higher thresholds ($32,000 to $44,000 for the first tier, above $44,000 for the second tier). Your combined income includes both spouses' income and both spouses' Social Security benefits. This can work in your favor if one spouse has little income and the other has substantial income — the combined threshold is higher than it would be if you filed separately.

If you are married and file separately, the thresholds are much lower. In fact, if you lived with your spouse at any time during the year and file separately, you use a combined income threshold of zero — meaning any combined income at all may trigger taxation of your benefits. This is why married couples almost always file jointly when Social Security is involved.

If you are divorced, you may be able to claim benefits on your ex-spouse's record without affecting their benefits. Those benefits are still subject to the same income tax rules as any other Social Security income.

Reporting Social Security on your tax return

Social Security benefits appear on Form SSA-1099, which you receive by January 31 each year. The form shows the total benefits you received in the prior year. You report this on your federal tax return using Schedule 1 (Form 1040) and potentially Schedule 8b, depending on how much of your benefits are taxable.

If none of your benefits are taxable, you still report the total on your return — the IRS uses this to verify that you reported all your income. If some of your benefits are taxable, you calculate the taxable amount using a worksheet in the instructions to Form 1040 or Schedule 1, or you can use tax software that walks you through the calculation.

Keep your SSA-1099 with your tax records. If you made estimated payments or had withholding taken from your benefits, those amounts are credited against your total tax liability when you file.

State tax considerations

Eleven states tax Social Security benefits under certain conditions. Missouri taxes all benefits for residents over age 59½. Colorado, Connecticut, Kansas, Minnesota, Montana, Nebraska, New Mexico, Rhode Island, Utah, and Vermont tax benefits based on income thresholds similar to the federal system, though the thresholds and percentages vary by state.

If you live in one of these states and receive Social Security, visit your state's tax authority website to find the rules for your situation. Some states offer exemptions based on age or income level. For example, some states exempt benefits for people over a certain age, or exempt benefits if your total income is below a threshold. A few states allow you to exclude a portion of benefits from state tax even if the federal government taxes them.

Frequently Asked Questions

Do I have to pay tax on Social Security if I have no other income?

No. If Social Security is your only income, your combined income will be below the threshold, and you owe no federal tax on your benefits. However, if you have any other income — wages, pensions, interest, or capital gains — you must recalculate using the combined income test.

What if I did not withhold enough tax during the year?

You can still pay the tax when you file your return. If you owe a large amount, the IRS may charge interest and a penalty for underpayment. To avoid this in future years, increase your withholding from Social Security or make quarterly estimated payments.

Can I reduce the tax I owe on Social Security?

You cannot reduce your Social Security benefits themselves, but you may be able to reduce other income. For example, if you have capital losses, you can use them to offset capital gains. If you have flexibility in when you take retirement distributions or sell investments, timing those events strategically may lower your combined income in a given year.

Does the tax on Social Security explore to Supplemental Security Income (SSI)?

No. SSI is a needs-based program and is not taxable. The income tax rules described here explore only to Social Security retirement, survivor, and disability benefits (SSDI). If you receive SSI, you do not owe federal tax on those payments.

What if I moved to a different state after I started receiving benefits?

Your state tax obligation follows your residency. If you move from a state that taxes Social Security to one that does not, you owe tax only to your new state. If you move to a state that taxes benefits, you may owe state tax starting in the year you establish residency there. Check your new state's rules and file accordingly.