Whether your Social Security is taxed depends on your other income
Social Security benefits themselves are never taxed by the federal government unless you have income from other sources. The tax rule is based on a combined income threshold, not on the benefits alone. If you live on Social Security and nothing else, you owe no federal tax on those benefits.
The moment you add wages, pensions, investment income, or other earnings to the picture, some of your Social Security may become taxable. The IRS calls this combined income "combined income," and it determines whether you cross the threshold that triggers taxation.
Key Takeaways
- Social Security is only taxed if your combined income (Social Security plus other earnings) exceeds a base amount set by the IRS, which is $25,000 for single filers and $32,000 for married couples filing jointly.
- Combined income includes wages, self-employment income, interest, dividends, and distributions from retirement accounts, but not all income counts the same way.
- If you are taxed on Social Security, only up to 85 percent of your benefits can be included in taxable income, never 100 percent.
- You can request that the Social Security Administration withhold federal income tax directly from your benefits to avoid a tax bill at filing time.
- State taxes on Social Security vary widely — some states tax it, others do not, and a few tax it only under certain conditions.
How the IRS calculates combined income
Combined income is not the same as adjusted gross income (AGI). The IRS adds your Social Security benefits to your AGI, then adds back certain deductions that other taxpayers can take. The result is your combined income figure.
For example: if you have $20,000 in wages, $500 in interest, and $18,000 in Social Security benefits, your combined income is roughly $38,500. That $38,500 is what the IRS compares to the base amount to decide whether any of your benefits are taxable.
The base amounts are $25,000 for single filers, $32,000 for married couples filing jointly, and $0 for married couples filing separately (with rare exceptions). These thresholds have not changed since 1984, even though the cost of living has risen significantly.
The two-tier system for taxing benefits
If your combined income exceeds the base amount, the IRS does not tax all your benefits. Instead, it uses a two-tier calculation that limits how much of your Social Security can be taxed.
In the first tier, you pay tax on up to 50 percent of your benefits if your combined income is between the base amount and a higher threshold ($34,000 for single filers, $44,000 for married couples filing jointly). In the second tier, if your combined income exceeds the higher threshold, you can pay tax on up to 85 percent of your benefits.
The exact amount taxed depends on how far above the threshold you are. A worksheet in IRS Publication 915 walks through the calculation, or a tax professional can compute it for you. The key point: no matter how high your income climbs, at least 15 percent of your Social Security benefits remain tax-free.
What counts and what does not count toward combined income
Income that counts: wages and salaries, self-employment income, taxable interest, ordinary dividends, capital gains, distributions from IRAs and 401(k)s, pensions, annuities, rental income, and royalties.
Income that does not count: municipal bond interest, Supplemental Security Income (SSI), Medicaid, food stamps, housing information, life insurance proceeds, and gifts. Roth IRA conversions and distributions from Roth IRAs do count toward combined income, even though the distributions themselves are not taxable.
If you are still working and receiving Social Security before your full retirement age, your earnings reduce your benefits dollar-for-dollar up to a limit set each year by Social Security. Those reduced benefits are what appears on your tax return, not the full amount you would have received.
Withholding tax directly from your benefits
You do not have to wait until tax time to pay tax on your Social Security. The Social Security Administration allows you to request federal income tax withholding directly from your monthly benefit payment.
To set up withholding, complete Form W-4V (Voluntary Withholding Request) and submit it to your local Social Security office, by mail, or online through your my Social Security account. You can choose to withhold 7, 10, 15, or 22 percent of your monthly benefit, or you can specify a flat dollar amount.
Withholding does not reduce the amount of Social Security you receive — it straightforward sets aside part of each payment for taxes. This approach helps you avoid a large tax bill or underpayment penalties when you file your return.
State taxes on Social Security benefits
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. Each state has its own rules about which residents are taxed and at what income level.
Some states follow the federal system closely and tax benefits only if your combined income exceeds a threshold. Others tax benefits based on your state income level alone, regardless of federal rules. A few states exempt benefits for residents over a certain age or with income below a specific amount.
If you live in a state that taxes Social Security, your state tax return instructions or your state revenue department website will explain the rules. If you live in a state with no income tax or a state that does not tax Social Security, you owe nothing to the state on these benefits.
Planning to reduce taxes on your benefits
If you are close to the combined income threshold, you may be able to reduce the amount of your benefits that are taxed by managing the timing of other income. For example, delaying a large capital gain, spreading an IRA withdrawal across two years, or timing the sale of an investment can shift when income appears on your tax return.
Roth conversions are a common strategy, but they increase combined income in the year of conversion and may push more of your Social Security into the taxable range. A tax professional can model different scenarios to show you the trade-offs.
If you are still working and receiving Social Security before full retirement age, earning less in a given year can reduce the amount Social Security withholds from your benefits, which also lowers your combined income and may reduce the tax on your benefits.
Frequently Asked Questions
Can I avoid paying tax on Social Security by not filing a return?
No. If your combined income exceeds the threshold, you owe tax on a portion of your benefits whether you file a return or not. The IRS can assess the tax and penalties if you do not report it. Filing a return is the correct way to report and pay any tax owed.
Does Medicare premium withholding count as income for Social Security tax purposes?
No. Medicare premiums are deducted from your Social Security check, but they do not reduce the amount of benefits counted toward combined income. The full benefit amount (before Medicare withholding) is what the IRS uses in the calculation.
What if I receive both Social Security and SSI?
SSI (Supplemental Security Income) does not count toward combined income and is never taxed. Only your Social Security retirement or disability benefits are subject to the combined income test. If you receive both, only the Social Security portion may be taxed.
Do I have to file a tax return if my only income is Social Security?
If Social Security is your only income and it is below the filing threshold for your age and filing status, you do not have to file. However, filing may allow you to claim a refundable tax credit like the Earned Income Tax Credit, so it can be worth doing even if you are not required to.
Will my tax on Social Security change if I move to a different state?
Your federal tax on Social Security will not change, but your state tax may. If you move from a state that taxes benefits to one that does not, your state tax bill will drop. If you move the other direction, you may owe state tax on benefits for the first time.