Social Security is taxable income, but only if your other income is high enough
Whether you pay federal income tax on Social Security depends on your combined income — not just what you receive from Social Security. The IRS counts half your Social Security benefit plus all your other income (wages, pensions, interest, dividends) to determine if you cross the threshold where taxation begins.
If your combined income stays below a certain level, you owe no federal tax on Social Security at all. If it exceeds that level, you may owe tax on up to 50 percent or 85 percent of your benefits, depending on how far over you go. The exact amount varies by filing status and state.
Key Takeaways
- Combined income — not Social Security alone — determines whether your benefits are taxed, and combined income includes half your Social Security plus all other income sources.
- The base thresholds are $25,000 for single filers and $32,000 for married filing jointly; income above these amounts may trigger taxation on 50 percent of benefits.
- A second, higher threshold ($34,000 single, $44,000 married filing jointly) determines whether up to 85 percent of your benefits become taxable.
- Some states tax Social Security benefits even when the federal government does not, so check your state's rules separately.
- The IRS sends Form SSA-1099 each January showing how much you received; you report this on your tax return using the worksheet in the instructions.
How the IRS calculates combined income
Combined income is not the same as adjusted gross income. The IRS starts with your adjusted gross income (AGI), then adds back certain deductions and half your Social Security benefit. The result is what the IRS calls modified adjusted gross income for Social Security taxation purposes.
For example: if you have $20,000 in wages, $5,000 in taxable interest, and $18,000 in Social Security, your combined income is $20,000 + $5,000 + (half of $18,000) = $29,000. This $29,000 figure — not the $25,000 in non-Social Security income — determines whether your benefits are taxed.
The two income thresholds and what they mean
The IRS uses two thresholds. If your combined income is below the first threshold, no part of your Social Security is taxable. If it is above the first but below the second, up to 50 percent of your benefits may be taxed. If it exceeds the second threshold, up to 85 percent may be taxed.
| Filing Status | First Threshold | Second Threshold |
|---|---|---|
| Single | $25,000 | $34,000 |
| Married filing jointly | $32,000 | $44,000 |
| Married filing separately | $0 | $0 |
If you are married filing separately, the thresholds are $0 — meaning any combined income may trigger taxation. This is why most married couples file jointly when one or both receive Social Security.
How much of your benefits actually gets taxed
The calculation is not straightforward because the IRS applies a formula, not a flat percentage. Between the first and second threshold, you pay tax on the lesser of (a) 50 percent of the amount you are over the first threshold, or (b) 50 percent of your total Social Security benefit. Above the second threshold, the calculation includes both the 50 percent rule and an 85 percent rule applied to the excess.
In practice, this means most people in the middle range pay tax on roughly 50 percent of their excess income, and people well above the second threshold pay tax on up to 85 percent of their benefits. The IRS worksheet in the instructions to Form 1040 walks through the exact calculation, and it is the most reliable way to know your number.
State taxes on Social Security
Thirteen states tax Social Security benefits to some degree: Colorado, Connecticut, Kansas, Minnesota, Missouri, Montana, Nebraska, New Mexico, Rhode Island, Utah, Vermont, and West Virginia. The rules in each state differ — some tax at the same thresholds as the federal government, others use different income limits, and some exclude certain types of recipients (like those over a certain age).
If you live in one of these states, you will need to check your state's tax instructions or contact your state revenue department. The federal calculation does not automatically tell you what you owe at the state level.
What form shows your Social Security income
Each January, the Social Security Administration sends you Form SSA-1099 showing the total benefits you received in the prior year. You use this amount on your federal tax return. If you did not receive a form but got benefits, contact Social Security to request one.
You report your Social Security on Form 1040 (the main federal tax form) and use the Social Security benefits worksheet in the instructions to calculate how much, if any, is taxable. If you use tax software, it usually walks you through this calculation automatically once you enter the amount from your SSA-1099.
Frequently Asked Questions
Can I reduce my Social Security taxes by taking withdrawals from my IRA instead of working?
No. Traditional IRA withdrawals count as income and are included in your combined income calculation, so they increase the amount of Social Security that gets taxed. Roth IRA withdrawals do not count as income for this purpose, but they still reduce your overall assets. The most effective way to lower Social Security taxation is to delay claiming benefits if you are still working.
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 the amount is below the filing threshold for your age and filing status, you do not have to file. However, if you had taxes withheld from your benefits, filing a return may result in a refund. Check the IRS filing requirements for your specific situation.
What if I worked overseas or have foreign income?
Foreign earned income and foreign investment income both count toward your combined income for Social Security taxation purposes. The foreign earned income exclusion (which lets you exclude certain wages earned abroad from U.S. taxation) does not apply to Social Security taxation calculations.
Does the tax rate on Social Security change every year?
The thresholds ($25,000, $32,000, $34,000, $44,000) are fixed by law and do not change annually. However, your combined income changes based on your wages, pensions, and other income each year, so the amount of your benefits that is taxable can vary year to year.