Whether You Pay Tax on Social Security Depends on Your Other Income

Social Security is not automatically tax-free. The IRS taxes part of your benefit if your total income crosses certain thresholds. Those thresholds are low — $25,000 for a single filer, $32,000 for married filing jointly — and they have not changed since 1984. Most people who have other retirement income will owe tax on some portion of their Social Security.

The amount you pay depends on your combined income, which includes wages, pensions, interest, dividends, and half of your Social Security benefit itself. If you are still working while drawing Social Security, your wages count. If you have a 401(k) or IRA withdrawal, that counts too. The calculation is not straightforward, but the IRS provides a worksheet to find out how much of your benefit is taxable.

You do not have to wait until tax time to deal with this. You can ask the Social Security Administration to withhold federal income tax from your monthly check, which prevents a surprise bill in April. Many people do this to avoid making quarterly estimated tax payments.

Key Takeaways

  • If your combined income (wages, pensions, interest, plus half your Social Security) exceeds $25,000 as a single filer or $32,000 married filing jointly, part of your Social Security is taxable.
  • Up to 85 percent of your Social Security benefit can be taxed, but only if your combined income is well above the initial threshold.
  • You can request federal income tax withholding directly from your Social Security check to avoid a tax bill later.
  • Delaying Social Security past age 62 does not change the tax rules, but it does increase your monthly benefit and may lower your combined income in early retirement years.
  • State income tax on Social Security varies by state — some states do not tax it at all, while others follow federal rules.

How the IRS Calculates Taxable Social Security

The IRS uses a two-tier system. If your combined income is below the first threshold ($25,000 single / $32,000 married), none of your Social Security is taxable. If it is above that but below a second threshold ($34,000 single / $44,000 married), up to 50 percent of your benefit is taxable. If it exceeds the second threshold, up to 85 percent is taxable.

Combined income is calculated as your adjusted gross income plus non-taxable interest plus half your Social Security benefit. This means even tax-free municipal bond interest counts toward the threshold. A person with $20,000 in wages, $3,000 in tax-free bond interest, and $15,000 in Social Security has a combined income of $23,500 (20,000 + 3,000 + 7,500), which stays below the first threshold.

The IRS provides a worksheet in Publication 915 to work through this calculation. Many tax software programs and tax preparers will do it for you. If you want to know your number before filing, you can call the Social Security Administration at 1-800-772-1213 and ask them to estimate your combined income based on your expected withdrawals and other income sources.

Withholding Tax From Your Social Security Check

You can have the Social Security Administration withhold federal income tax from your monthly benefit. This is voluntary, but it is the simplest way to handle the tax liability if you know you will owe. You fill out Form W-4V (Voluntary Withholding Request) and submit it to your local Social Security office or mail it in.

You choose the withholding rate: 7, 10, 15, or 20 percent of your benefit. If you expect to owe $500 to $1,000 in tax on your Social Security, a 10 or 15 percent withholding usually covers it. If you are unsure, start with 10 percent and adjust the next year based on your actual tax bill.

Withholding does not change how much tax you owe — it just spreads the payment across the year instead of asking you to pay it all in April. If you withhold too much, you get a refund. If you withhold too little, you still owe the difference when you file.

Working While Drawing Social Security and Taxes

If you claim Social Security before your full retirement age and continue working, your wages push your combined income higher, which increases the portion of your benefit that is taxable. Additionally, Social Security itself reduces your benefit by $1 for every $2 you earn above the annual earnings limit (the limit is $23,400 in 2024, but this changes yearly). This reduction ends once you reach full retirement age.

The tax effect is separate from the earnings reduction. Both happen at the same time. A 62-year-old earning $35,000 a year while drawing Social Security will have both a reduced benefit (because of the earnings limit) and a higher tax bill (because of the higher combined income). This is one reason many people delay claiming until they stop working or their income drops.

Once you reach full retirement age, the earnings limit disappears, but the tax rules remain the same. Your wages still count toward combined income and may trigger taxation of your benefit.

State Income Tax on Social Security

Thirty-seven states do not tax Social Security at all. Thirteen states tax it, but most of those follow the federal rules — meaning if your Social Security is not taxable under federal law, it is not taxable under state law either. A few states (Colorado, Connecticut, Kansas, Missouri, Montana, Nebraska, Rhode Island, and Utah) tax Social Security differently or more broadly than the federal government does.

If you live in or are moving to a state that taxes Social Security, check that state's tax agency website or call them directly. The rules vary enough that a benefit that is partially taxable federally might be fully taxable or not taxable at all under state law. This is especially important if you are considering moving in retirement — state tax treatment of Social Security can be a significant factor in your decision.

Planning Your Retirement Income to Minimize Taxes

Because combined income triggers taxation of Social Security, the order and timing of your withdrawals matter. If you have a choice between drawing from a taxable brokerage account, a traditional IRA, or delaying Social Security, the tax impact differs. Withdrawals from a traditional IRA count as income and raise your combined income. Withdrawals from a Roth IRA do not count. Delaying Social Security by even one or two years can lower your combined income in early retirement and reduce the tax on your benefit.

Some people coordinate their IRA withdrawals with their Social Security claim date to keep combined income below the second threshold ($34,000 single / $44,000 married) in early retirement years, then take larger withdrawals later when they have fewer working years ahead. This is not a universal strategy — it depends on your specific numbers, life expectancy, and other sources of income — but it is worth discussing with a tax preparer or financial planner before you claim.

Another option is to claim Social Security later (age 70 instead of 62 or 67) if you can afford to live on other income first. Your monthly benefit increases by 8 percent for each year you delay past full retirement age. In years when you have lower income from other sources, a higher Social Security benefit may result in less total tax.

What Happens If You Did Not Withhold Enough Tax

If you did not withhold tax from your Social Security check and you owe money when you file, you can pay it with your return or set up a payment plan with the IRS. You may also owe a penalty for underpayment of estimated tax if the amount owed is large. The penalty is usually small — a few percent of the unpaid tax — but it adds up if you owe several hundred dollars.

To avoid this in future years, you can request withholding retroactively by submitting a new Form W-4V. The withholding will start the month after the Social Security Administration processes your request. You can also make estimated tax payments directly to the IRS using Form 1040-ES if you prefer not to withhold from your benefit.

Frequently Asked Questions

Can I avoid paying tax on Social Security by not claiming it until later?

Delaying does not change the tax rules, but it does lower your combined income in early retirement years, which may reduce the portion of your benefit that is taxable when you do claim. If you can live on other income until age 70, your higher monthly benefit might result in less total tax over your lifetime, though this depends on your specific situation.

Does Medicare premium withholding count as income for Social Security tax purposes?

No. Medicare premiums are deducted from your Social Security check but do not count as income. They do not affect the calculation of combined income or the taxation of your benefit.

What if I have a pension and Social Security — will both be taxed?

Your pension counts toward combined income, which may trigger taxation of your Social Security. Your pension itself is taxable as ordinary income. The two are separate — taxation of one does not prevent taxation of the other.

Do I need to file a tax return if my only income is Social Security?

If Social Security is your only income and the amount is below the filing threshold (roughly $14,600 for a single person age 65 or older in 2024), you do not have to file. However, if you had federal income tax withheld from your check, you may want to file to get a refund.

Can I change my withholding amount after I start receiving benefits?

Yes. You can submit a new Form W-4V at any time to increase, decrease, or stop withholding. Changes take effect the month after the Social Security Administration processes your request.