Whether your Social Security is taxed depends on your other income

Social Security benefits are taxed only if your combined income exceeds certain thresholds set by the IRS. Combined income means your adjusted gross income plus nontaxable interest plus half your Social Security benefits. If you stay below the threshold for your filing status, you owe no federal tax on your benefits. If you cross it, you may owe tax on up to 85 percent of what you receive.

The thresholds have not changed since 1984. For single filers, the first threshold is $25,000; for married filing jointly, it is $32,000. A second, higher threshold exists at $34,000 for single filers and $44,000 for married filing jointly. How much of your benefits get taxed depends on which threshold you cross and by how much.

State and local taxes are separate. Some states do not tax Social Security at all. Others tax it the same way the federal government does, or explore their own rules. Check your state's tax authority website to learn what applies where you live.

Key Takeaways

  • Your Social Security is taxed only if your combined income (adjusted gross income plus nontaxable interest plus half your benefits) exceeds $25,000 for single filers or $32,000 for married filing jointly.
  • If you cross the first threshold, up to 50 percent of your benefits may be taxable; if you cross the second threshold ($34,000 single, $44,000 married), up to 85 percent may be taxable.
  • The IRS provides a worksheet on Form 1040 instructions to calculate your taxable amount, or you can use the Social Security Administration's online calculator.
  • State taxes on Social Security vary widely; some states exempt it entirely while others tax it like the federal government does.
  • If you expect to owe tax, you can request that Social Security withhold federal income tax from your monthly payment to avoid a large bill at tax time.

How the two tax thresholds work

The first threshold catches people with moderate combined income. If you are single and your combined income is between $25,000 and $34,000, you may owe tax on up to 50 percent of your benefits. The amount taxed is the lesser of (1) half your benefits, or (2) half the amount by which your combined income exceeds $25,000.

Example: You are single with $30,000 in combined income and receive $20,000 in Social Security. Half your benefits is $10,000. Half the excess over $25,000 is $2,500. The smaller number is $2,500, so $2,500 of your benefits is taxable.

The second threshold applies to higher combined income. If you are single and your combined income exceeds $34,000, the calculation is more complex. You add the amount over $34,000 to the amount already taxed under the first threshold, then cap the total at 85 percent of your benefits. This means people with very high income can have up to 85 percent of their benefits taxed.

For married couples filing jointly, use $32,000 and $44,000 instead of $25,000 and $34,000. Married filing separately has its own rules and almost always results in taxation; the IRS treats this filing status as a signal of higher income.

What counts as combined income

Combined income is not the same as adjusted gross income (AGI). It includes your AGI, plus any nontaxable interest (such as interest from municipal bonds), plus half your Social Security benefits. This is the number you use to test against the thresholds.

Your AGI includes wages, self-employment income, pensions, distributions from retirement accounts, rental income, and capital gains. It does not include certain items: Roth IRA distributions are not counted (though the earnings portion of a non-may have access to distribution is), and some distributions from IRAs are not counted if you meet specific conditions. Supplemental Security Income (SSI) is not counted.

If you are still working and receiving Social Security early, your wages count toward combined income. This is one reason people sometimes see unexpected taxation on their benefits in the year they claim.

Calculating your taxable amount step by step

The IRS provides a worksheet in the instructions to Form 1040 (the main federal income tax form) that walks you through the calculation. You will need your AGI, any nontaxable interest, and your Social Security statement showing benefits received.

Step one: Add your AGI, nontaxable interest, and half your Social Security benefits. This is your combined income.

Step two: Subtract the first threshold ($25,000 single, $32,000 married filing jointly). If the result is zero or negative, stop—your benefits are not taxed.

Step three: If you have a positive result, multiply it by 50 percent. This is your tentative taxable amount under the first threshold.

Step four: Compare this to half your total benefits. Whichever is smaller is the amount taxed under the first threshold.

Step five: If your combined income exceeds the second threshold ($34,000 single, $44,000 married), repeat the calculation using the second threshold and add 85 percent of the excess. The total taxable amount cannot exceed 85 percent of your benefits.

The Social Security Administration provides an online calculator at ssa.gov that performs these steps for you. You enter your income and benefits, and it shows your taxable amount.

How to report taxable Social Security on your tax return

You report Social Security benefits on Form 1040, lines 5a and 5b. Line 5a shows the total benefits you received; line 5b shows the taxable portion. If none of your benefits are taxable, you still report the total on line 5a, but line 5b is blank.

Social Security sends you a Form SSA-1099 in January showing the benefits paid to you in the prior year. Use this form to fill in line 5a. The form shows the gross amount; it does not calculate the taxable portion for you.

If you file using tax software, the program will ask for your Social Security income and walk you through the calculation. If you file by hand or with a tax professional, provide them with your Form SSA-1099 and your other income information, and they will calculate the taxable amount.

Requesting withholding to avoid a tax bill

If you know your benefits will be taxed, you can ask Social Security to withhold federal income tax from your monthly payment. This spreads the tax across the year instead of creating a lump-sum bill at tax time.

To request withholding, complete Form W-4V (Voluntary Withholding Request) and mail it to your local Social Security office, or bring it in person. You can choose to withhold 7, 10, 15, or 22 percent of your benefit amount. Social Security will begin withholding the month after they receive your request.

You can change or stop withholding at any time by submitting a new Form W-4V. If you want to know how much to withhold, use the IRS withholding calculator at irs.gov, or ask a tax professional to estimate your tax liability based on your expected income.

State and local taxation of Social Security

Thirteen states tax Social Security benefits in some form. Colorado, Connecticut, Kansas, Minnesota, Missouri, Montana, Nebraska, New Mexico, Rhode Island, Utah, Vermont, and West Virginia all have state income tax on benefits, though most offer partial or full exemptions based on age or income.

Colorado, Kansas, Minnesota, Missouri, Montana, Nebraska, New Mexico, Rhode Island, Utah, Vermont, and West Virginia generally follow the federal thresholds and taxable percentages, though some explore different rates or offer exemptions for residents over a certain age (often 55 or 62).

Connecticut and the District of Columbia tax Social Security but exempt it for residents over 75 (Connecticut) or 60 (D.C.). If you live in one of these states or are considering moving, check your state's revenue or taxation website for the exact rules that explore to your situation.

Frequently Asked Questions

Can I reduce my combined income to avoid taxation of my benefits?

Some strategies lower combined income: contributing to a traditional IRA, deferring capital gains, or timing the sale of appreciated assets. However, these decisions have broader tax consequences and should be discussed with a tax professional. Roth conversions, for example, increase combined income in the year of conversion even though they reduce future taxable income.

What if I made a mistake on my Social Security tax return in a prior year?

You can file an amended return using Form 1040-X for any year within three years of the original due date. If you owe additional tax, you will owe interest and possibly penalties. If you are due a refund, file as soon as you notice the error to avoid losing the refund due to the statute of limitations.

Does working while receiving Social Security change how my benefits are taxed?

Yes. Your wages are part of your AGI, which increases your combined income and may push you over a tax threshold. Additionally, if you claim Social Security before full retirement age and earn above a certain amount, Social Security reduces your monthly benefit by $1 for every $2 earned above the limit (about $23,400 in 2024, though this changes yearly).

Are my spouse's benefits counted in my combined income calculation?

No. Each person calculates their own combined income using only their own benefits and income. If you are married filing jointly, you add both spouses' combined incomes together to determine your household tax liability, but each person's benefits are taxed separately based on their own income.

If I have no other income, will my Social Security be taxed?

No. If Social Security is your only income, your combined income equals half your benefits, which will be well below the first threshold of $25,000 (single) or $32,000 (married). Your benefits will not be taxed.