Social Security benefits are taxable income in some situations, depending on how much you earn and receive
Not all of your Social Security benefits are taxable, but some or all of them may be, depending on your total income for the year. The IRS uses a formula based on your combined income — which includes wages, interest, dividends, and part of your Social Security benefits themselves. If your combined income exceeds certain thresholds, you will owe federal income tax on a portion of your benefits.
The thresholds are the same whether you are single or married filing jointly, but married couples filing separately face much higher tax rates on benefits. These thresholds have not changed since 1984, which means more people cross them each year even if their income stays flat.
Key Takeaways
- You calculate whether benefits are taxable using combined income, which includes half of your annual Social Security benefits plus all other income sources.
- Single filers with combined income over $25,000 and married joint filers over $32,000 will owe tax on some benefits; those above $34,000 and $44,000 respectively may owe tax on up to 85 percent of benefits.
- The tax is federal income tax only — Social Security benefits are not subject to state income tax in any state, and most states do not tax them at all.
- You can ask the Social Security Administration to withhold federal income tax from your monthly benefit check, which prevents a tax bill at filing time.
- Withdrawing from a traditional IRA or 401(k) in retirement can push your combined income over the threshold and trigger taxation of benefits you thought were tax-free.
How the IRS calculates combined income
The IRS does not use your gross income or your adjusted gross income to determine whether benefits are taxable. Instead, it uses a number called combined income, calculated as: your adjusted gross income plus nontaxable interest plus half of your Social Security benefits.
This formula means your Social Security benefits count against themselves — half of what you receive is added back into the income calculation. If you receive $20,000 in benefits, $10,000 of that counts toward the threshold. This creates a situation where someone with modest earnings can still trigger taxation of benefits.
For example, a single person with $15,000 in pension income and $20,000 in Social Security benefits has combined income of $15,000 + $10,000 = $25,000. They are right at the first threshold and will owe tax on some benefits. If they had $20,000 in pension income instead, their combined income would be $30,000, and more of their benefits would be taxable.
The two income thresholds and how much becomes taxable
The IRS applies two separate thresholds. If your combined income exceeds the first threshold, up to 50 percent of your benefits become taxable. If it exceeds the second, up to 85 percent become taxable.
| 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, you face a much steeper penalty: virtually all of your benefits become taxable unless your combined income is zero. This is why married couples in this situation almost always file jointly instead.
The calculation itself is complex and involves multiple steps. Most people use tax software or a tax professional to determine the exact amount. The Social Security Administration provides a worksheet in Publication 915, but the math is not intuitive, and errors are common.
Which income sources count toward the threshold
Combined income includes almost everything: W-2 wages, self-employment income, interest, dividends, capital gains, rental income, and distributions from retirement accounts. It also includes nontaxable interest from municipal bonds, which most people do not expect to count.
Withdrawals from traditional IRAs and 401(k)s count in full, even if you do not owe income tax on them (for example, if you are below the standard deduction). This is a common surprise for people who retire before age 59½ and take early distributions. A $20,000 IRA withdrawal can push $10,000 of Social Security benefits into taxable territory.
Roth IRA conversions also count. If you convert a traditional IRA to a Roth, the conversion amount is added to your combined income for that year, potentially making a large portion of your benefits taxable that year only.
Income that does not count includes Supplemental Security Income (SSI), veterans benefits, workers' compensation, and certain railroad retirement benefits. Gifts and inheritances do not count either.
State taxes on Social Security benefits
No state taxes Social Security benefits as income. However, some states tax other retirement income, and a few states have special rules about how they treat people who receive Social Security.
Thirteen states tax retirement income from pensions and IRAs but exempt Social Security: Colorado, Connecticut, Kansas, Minnesota, Missouri, Montana, Nebraska, New Mexico, Rhode Island, Utah, Vermont, and West Virginia. If you live in one of these states and receive both Social Security and pension income, you will owe state tax on the pension but not the Social Security.
The remaining states either do not tax retirement income at all or have other rules. Check your state's department of revenue website if you are unsure whether your state taxes retirement income.
How to avoid or reduce the tax bill
The most direct way to reduce taxation of benefits is to lower your combined income. This might mean delaying retirement account withdrawals, spacing out Roth conversions across multiple years, or timing the sale of investments to spread capital gains across years.
You can also ask the Social Security Administration to withhold federal income tax from your monthly benefit check. You do this by completing Form W-4V and submitting it to your local Social Security office or mailing it to the address on the form. You can choose to withhold 7, 10, 15, or 22 percent of your benefit, or you can request a specific dollar amount.
Withholding does not reduce the amount of benefits you receive — it straightforward sets aside part of your check for taxes. This prevents a large tax bill when you file your return. Many people find this simpler than trying to manage quarterly estimated tax payments.
If you are still working and receiving benefits before your full retirement age, you may be subject to the earnings test, which temporarily reduces your benefits. This is a separate rule from taxation and can actually lower your combined income in the short term, though benefits are recalculated at full retirement age.
Reporting Social Security benefits on your tax return
You report Social Security benefits on Form 1040 or Form 1040-SR (for people age 65 and older). The Social Security Administration sends you Form SSA-1099 by January 31 each year showing the total benefits you received.
You enter the total from the SSA-1099 on line 5b of Form 1040. If any of your benefits are taxable, you also complete the worksheet in the Form 1040 instructions or use tax software to calculate the taxable amount. The taxable portion goes on line 5c.
If you did not receive an SSA-1099 but received benefits, contact the Social Security Administration. You will need the form to file your return accurately, and the IRS will match your return against the SSA-1099 they receive.
What happens if you do not pay tax on taxable benefits
If you owe tax on Social Security benefits and do not pay it, the IRS will send you a notice. You can set up a payment plan if you cannot pay in full. If you underpaid significantly, you may also owe penalties and interest.
The IRS can also offset your federal tax refund in future years to cover unpaid tax on benefits. If you are receiving Social Security, the IRS cannot garnish your benefits themselves, but they can take other income or refunds.
If you made a mistake on a prior year return, you can file an amended return using Form 1040-X. You have generally three years from the original filing date to claim a refund of overpaid tax.
Frequently Asked Questions
Do I have to pay tax on all of my Social Security benefits?
No. Depending on your combined income, zero, some, or up to 85 percent of your benefits may be taxable. If your combined income is below $25,000 (single) or $32,000 (married filing jointly), none of your benefits are taxable. Above those thresholds, the amount that becomes taxable increases gradually.
What if I have very little income besides Social Security?
If your only income is Social Security and you have no other earnings, interest, or investment income, your combined income will be half your benefits, which is below the first threshold. You will owe no federal income tax. However, you should still file a return if you had federal income tax withheld, because you may be due a refund.
Can I reduce my combined income by donating to charity?
Charitable donations reduce your taxable income only if you itemize deductions on Schedule A. Most people take the standard deduction instead, which means charitable donations do not lower your combined income for Social Security purposes. Charitable donations do not affect whether your benefits are taxable.
If I delay claiming Social Security, will my benefits be taxed less?
Delaying benefits increases the amount you receive each month, which increases your combined income when you do claim. However, delaying also means you receive benefits for fewer years overall. The taxation of benefits is separate from the decision to delay — both the amount you receive and the tax you owe will be higher if you delay.
Do I owe self-employment tax on Social Security benefits?
No. Self-employment tax (Social Security and Medicare tax) applies only to net earnings from self-employment. Social Security benefits are not earnings and are not subject to self-employment tax, even if they are subject to federal income tax.