Whether you owe federal income tax on Social Security depends on your total income for the year
You may owe federal income tax on part of your Social Security benefits if your combined income exceeds certain thresholds. Combined income means your adjusted gross income plus nontaxable interest plus half of your Social Security benefits. The IRS uses this combined income figure, not your Social Security amount alone, to decide if any of your benefits are taxable.
The thresholds are $25,000 for single filers and $32,000 for married couples filing jointly. If your combined income falls below these amounts, you owe no federal tax on your benefits. If it exceeds them, you may owe tax on up to 85 percent of your benefits, depending on how far over the threshold you go.
State income tax is a separate question. Some states do not tax Social Security at all. Others tax it under the same federal rules, and a few have their own thresholds. You need to check your state's rules separately.
Key Takeaways
- Combined income — not Social Security alone — determines whether your benefits are taxable, and combined income includes half your benefits themselves.
- Single filers with combined income over $25,000 and married filers over $32,000 may owe federal tax on part of their benefits.
- You can reduce combined income by earning less, withdrawing less from retirement accounts, or delaying Social Security if you are still working.
- State tax rules on Social Security vary widely; some states tax it, others do not, and a few use different thresholds than the federal government.
- The Social Security Administration does not withhold federal income tax automatically, so you may need to make quarterly estimated tax payments or adjust withholding from other income.
How the IRS calculates combined income
Combined income is not the same as your total income. The IRS starts with your adjusted gross income (AGI) — the number on line 11 of your Form 1040 — then adds back certain deductions and adds half your Social Security benefits.
If you have a pension, 401(k) withdrawal, IRA distribution, wages, interest, dividends, or rental income, all of those count toward combined income. Nontaxable interest from municipal bonds also counts, which surprises many people. The only major income sources that do not count are Supplemental Security Income (SSI) and certain veterans benefits.
The reason half your benefits are included in the calculation is mathematical: the IRS wants to capture the fact that you received the money, even though it is not all taxable. It is a way of measuring your overall economic situation rather than just your earned income.
The tax brackets for Social Security benefits
Once you know your combined income, the IRS applies two tiers to determine how much of your benefits are taxable.
For the first tier, if your combined income is between $25,000 and $34,000 (single) or $32,000 and $44,000 (married filing jointly), up to 50 percent of your benefits may be taxable. The exact amount depends on how far over the threshold you are.
For the second tier, if your combined income exceeds $34,000 (single) or $44,000 (married filing jointly), up to 85 percent of your benefits may be taxable. Again, the exact percentage depends on your specific combined income.
These thresholds have not changed since 1984, so they have not kept pace with inflation. That means more people cross into taxable territory each year, even if their actual purchasing power has not increased.
Ways to reduce your combined income
If you are close to or over the threshold, you have a few options to lower your combined income and reduce or eliminate the tax on your benefits.
The most direct method is to reduce other income. If you are still working, earning less that year lowers your AGI. If you have control over when you take retirement account distributions, delaying them pushes income into a later year. If you have rental property or other business income, timing deductions strategically can help.
Delaying Social Security itself is another route, though it only works if you have not started benefits yet. Each year you wait past your full retirement age increases your monthly benefit by about 8 percent, and a higher monthly benefit does not change the tax calculation — the same thresholds apply. The benefit is that you have fewer years of benefits to count, so your combined income may stay below the threshold.
Converting a traditional IRA to a Roth IRA increases your combined income in the year of conversion, so that strategy usually makes sense only if you are already over the threshold and want to lock in a lower tax rate before it rises.
How withholding and estimated taxes work
Social Security payments do not have federal income tax withheld automatically. If you owe tax on your benefits, you have two ways to pay it: adjust withholding from other income sources, or make quarterly estimated tax payments directly to the IRS.
If you receive a pension or still work, you can ask your employer to withhold extra federal income tax from those paychecks. This is the simpler route for most people because the withholding happens automatically and you do not have to calculate quarterly payments yourself.
If you have no other income source to withhold from, you can make estimated tax payments using Form 1040-ES. These are due on April 15, June 15, September 15, and January 15. If you underpay, you may owe a penalty, so it is worth getting the calculation right or consulting a tax professional.
You can also wait and pay the full amount when you file your tax return, but the IRS may charge a penalty for underpayment if you owe more than $1,000.
State income tax on Social Security
Thirteen states tax Social Security benefits under the same federal rules: Colorado, Connecticut, Kansas, Minnesota, Missouri, Montana, Nebraska, New Mexico, Rhode Island, Utah, Vermont, and West Virginia. If you live in one of these states, you will owe state tax on the same portion of benefits that is taxable federally.
The remaining states either do not tax Social Security at all or have their own rules. Some states exempt Social Security entirely. Others tax it only if your income exceeds a certain level, and those thresholds may be higher or lower than the federal ones.
You need to check your state's tax agency website or speak with a tax professional to understand your state's specific rules. State tax forms and instructions usually explain how to report Social Security on your state return.
What to do if you receive a Form SSA-1099
In January, the Social Security Administration sends you a Form SSA-1099 showing the total benefits you received in the previous year. You use this form to report Social Security on your federal and state tax returns.
The form shows your total benefits in box 5. You do not report this amount directly on your Form 1040; instead, you use a worksheet in the Form 1040 instructions to calculate how much is taxable, then report only the taxable portion on line 5b of your Form 1040.
If you did not receive a Form SSA-1099 by early February, contact the Social Security Administration at 1-800-772-1213 or visit ssa.gov to request a replacement. You need this form to file your return accurately.
Frequently Asked Questions
Can I avoid paying taxes on Social Security by not filing a return?
No. If your combined income exceeds the threshold, you are required to file a federal income tax return and report the taxable portion of your benefits. Not filing does not eliminate the tax; it only creates a compliance problem with the IRS.
Does Medicare premium withholding count as income for the Social Security tax calculation?
No. Medicare premiums are deducted from your Social Security check, but they do not count as income and do not affect the combined income calculation. Only the net amount you receive counts.
What if I worked and received Social Security in the same year?
Both count toward combined income. Your wages, self-employment income, and half your Social Security benefits all add together. If you are under full retirement age and still working, you may also face a separate earnings limit that temporarily reduces your benefits, but that is a different rule from the tax calculation.
Do I have to pay taxes on Social Security if I live outside the United States?
The same federal tax rules apply whether you live in the U.S. or abroad. However, if you are a U.S. citizen living outside the country, you may have additional filing requirements under the Foreign Earned Income Exclusion or Foreign Account Tax Compliance Act (FATCA). Consult a tax professional familiar with expatriate returns.
Can I deduct the taxes I pay on Social Security benefits?
No. Taxes on Social Security benefits are not deductible. You pay them as part of your regular federal income tax liability, and they reduce your refund or increase the amount you owe when you file.