Whether you owe taxes on Social Security depends on your total income
You may owe federal income tax on your Social Security benefits if your combined income exceeds a certain threshold. The IRS calls this "combined income," and it includes your wages, interest, dividends, and half of your Social Security benefits added together. If that total is below the threshold for your filing status, you owe no tax on your benefits. If it exceeds the threshold, you may owe tax on up to 85 percent of your benefits.
The thresholds have not changed since 1984 and do not adjust for inflation. For 2024, the first threshold is $25,000 for single filers and $32,000 for married couples filing jointly. These fixed thresholds mean more people cross them each year as their income grows, even if their actual circumstances have not changed.
State taxes are separate. Some states do not tax Social Security at all. Others tax it the same way the federal government does, and a few have their own rules. You will need to check your state's rules separately.
Key Takeaways
- Combined income—your wages plus half your Social Security benefits—determines whether you owe federal tax on your benefits.
- If your combined income stays below $25,000 (single) or $32,000 (married filing jointly), you owe no federal tax on Social Security.
- If your combined income exceeds the threshold, you may owe tax on up to 50 or 85 percent of your benefits, depending on how far over you are.
- Social Security itself does not withhold taxes automatically; you must arrange withholding or make quarterly payments to avoid owing a large bill at tax time.
- State tax treatment of Social Security varies widely, so check your state's rules even if you owe no federal tax.
How the IRS calculates combined income
The IRS formula is straightforward but counterintuitive. Take your adjusted gross income (wages, self-employment income, interest, dividends, and other sources), add any tax-exempt interest, then add half of your Social Security benefits. That total is your combined income.
The half-benefit rule is the key. If you received $20,000 in Social Security, you add $10,000 to your other income when calculating whether you cross the threshold. This means you can have substantial other income and still stay below the threshold—or you can have modest income and cross it because of the benefit amount.
Example: A single person with $15,000 in wages and $20,000 in Social Security has combined income of $15,000 + $10,000 = $25,000. They are exactly at the threshold and owe no tax. If they had $16,000 in wages instead, their combined income would be $26,000, and they would owe tax on some of their benefits.
The two-tier tax system for Social Security benefits
Once you cross the threshold, the amount of your benefits subject to tax depends on how far over you are. The IRS uses two tiers, and the calculation can be complex, but the outcome is predictable.
If your combined income is between the first threshold ($25,000 single / $32,000 married) and a second threshold ($34,000 single / $44,000 married), up to 50 percent of your benefits may be taxable. If your combined income exceeds the second threshold, up to 85 percent of your benefits may be taxable. You never owe tax on more than 85 percent of your benefits, no matter how high your income climbs.
The IRS provides a worksheet in Publication 915 to calculate the exact amount. Many tax software programs and tax preparers will do this calculation for you. If you prepare your own return, the worksheet walks through the steps in order.
How to handle withholding and estimated taxes
Social Security does not automatically withhold federal income tax from your benefits the way an employer does from wages. You have two choices: arrange voluntary withholding, or make quarterly estimated tax payments.
To set up withholding, complete Form W-4V and send it to your local Social Security office or submit it online through your my Social Security account. You can choose to have 7, 10, 12, or 22 percent of your benefit withheld each month. This is the simpler route for most people because the money comes out automatically and you do not have to remember quarterly important date.
If you prefer not to withhold from Social Security, you can make quarterly estimated tax payments directly to the IRS using Form 1040-ES. Payments are due April 15, June 15, September 15, and January 15. Underpayment can result in penalties, so this route requires more attention.
State tax treatment 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. The rules vary by state.
Some states follow the federal system closely and tax the same portion of benefits. Others have their own thresholds or tax all benefits above a certain income level. A few states exempt benefits for residents over a certain age or with income below a state-specific threshold.
If you live in one of these states, contact your state tax authority or check the state revenue department website for the rules that explore to you. Your tax preparer can also advise you on state obligations.
What to do if you think you will owe tax on benefits
The time to act is before the tax year ends, not when you file. If you know your combined income will exceed the threshold, set up withholding on your Social Security benefits now. This spreads the tax burden across the year instead of creating a large bill in April.
If you are already retired and receiving benefits, log into your my Social Security account to submit Form W-4V. If you are not yet receiving benefits but expect to owe tax when you do, you can arrange withholding as soon as your benefits begin.
If you receive a large bonus, inheritance, or other windfall income in a single year, that year's combined income may spike and push you into the taxable range even though you normally stay below the threshold. In that case, you might owe tax only that year. Plan ahead if you know a large payment is coming.
Working and receiving Social Security at the same time
If you work while receiving Social Security before your full retirement age, your wages count toward combined income for tax purposes. This can push you over the threshold even if your Social Security benefit alone would not.
Additionally, if you work and earn above a certain amount before reaching full retirement age, Social Security will reduce your monthly benefit—a separate rule from taxes. For 2024, Social Security reduces benefits by $1 for every $2 you earn above $23,400 in the year you reach full retirement age (the limit is higher in months after you reach full retirement age). This reduction is not a tax, but it does reduce the income you receive.
Once you reach full retirement age, you can earn any amount without affecting your benefit, and the earnings still count toward combined income for tax purposes.
Frequently Asked Questions
Do I have to file a tax return if my only income is Social Security?
Not necessarily. If Social Security is your only income and you are not required to file for other reasons, you generally do not have to file a federal return. However, if you have other income or if you had taxes withheld from your benefits, filing a return may get you a refund. Check IRS.gov for current filing requirements based on your age and income.
Can I reduce my combined income to avoid taxes on Social Security?
Not easily. Combined income includes most sources of earnings and investment income. You cannot exclude income to lower the calculation. However, if you have a choice about when to take certain income—such as delaying a bonus or deferring a distribution—timing it in a lower-income year may help. A tax professional can advise on your specific situation.
What if I did not withhold taxes and now owe a large amount?
You can set up a payment plan with the IRS if you cannot pay in full. You can also adjust your withholding going forward to reduce what you owe next year. Contact the IRS or a tax professional to discuss your options.
Are there any states where Social Security is completely tax-free?
Yes. Thirty-seven states do not tax Social Security benefits at all. If you live in one of those states, you owe no state tax on your benefits regardless of your income level. Check your state revenue department website to confirm your state's rules.
Does the Medicare premium I pay reduce my combined income?
No. Medicare premiums deducted from your Social Security benefit do not reduce your combined income for tax purposes. The IRS counts the full benefit amount before any deductions.