When Social Security becomes taxable income
Whether you owe federal income tax on your Social Security benefits depends on your combined income — a specific calculation that includes your benefits, wages, interest, and certain other money you receive. The IRS uses a formula with two thresholds: if your combined income stays below the first threshold, none of your benefits are taxed. If it crosses into a higher range, you may owe tax on up to 50 percent of your benefits. If it goes higher still, you may owe tax on up to 85 percent of your benefits.
The thresholds are the same for everyone, but they have not changed since 1984, so inflation means more people cross them each year. Your state may also tax Social Security benefits — rules vary widely by state, and some states do not tax them at all.
Key Takeaways
- Combined income is calculated by adding your adjusted gross income, tax-exempt interest, and half your Social Security benefits together.
- If your combined income is below $25,000 (single) or $32,000 (married filing jointly), you owe no federal tax on your benefits.
- Between those thresholds and $34,000 (single) or $44,000 (married filing jointly), you may owe tax on up to 50 percent of your benefits.
- Above $34,000 (single) or $44,000 (married filing jointly), you may owe tax on up to 85 percent of your benefits.
- State tax rules on Social Security vary; some states do not tax benefits at all, while others have their own thresholds and rates.
How to calculate your combined income
Start with your adjusted gross income (AGI) — this is the number at the bottom of the income section of your tax return before you claim the standard deduction or itemized deductions. If you are married filing jointly, use your combined AGI.
Next, add any tax-exempt interest you earned. This is interest from municipal bonds and certain other sources that does not appear on your tax return. If you do not own municipal bonds or similar investments, this number is zero.
Finally, add half of your Social Security benefits for the year. If you received $20,000 in benefits, you add $10,000 to this calculation. This combined total is what the IRS uses to determine whether your benefits are taxed.
| Filing Status | First Threshold | Second Threshold |
|---|---|---|
| Single | $25,000 | $34,000 |
| Married filing jointly | $32,000 | $44,000 |
| Married filing separately | $0 | $0 |
What happens if you cross the first threshold
If your combined income is above $25,000 (single) or $32,000 (married filing jointly) but below $34,000 (single) or $44,000 (married filing jointly), you enter the range where some benefits become taxable.
The taxable amount is the lesser of two calculations: either 50 percent of the amount your combined income exceeds the first threshold, or 50 percent of your total benefits. For example, if you are single, your combined income is $30,000, and your benefits are $18,000, the amount over the first threshold is $5,000. Half of that is $2,500. Half of your benefits is $9,000. The lesser amount is $2,500, so $2,500 of your benefits are taxable.
You then add this taxable amount to your other income and pay tax on it at your ordinary tax rate — there is no special rate for Social Security.
What happens if you cross the second threshold
If your combined income exceeds $34,000 (single) or $44,000 (married filing jointly), the calculation becomes more complex because you may owe tax on up to 85 percent of your benefits.
The taxable amount is the lesser of two calculations: either 85 percent of the amount your combined income exceeds the second threshold, plus the amount already taxable from the first calculation, or 85 percent of your total benefits. This means that at the highest income levels, most of your Social Security can become taxable income, though the law caps it at 85 percent.
The IRS provides a worksheet in Publication 915 to walk through this calculation step by step. Many tax software programs also calculate this automatically if you enter your Social Security income.
How to find your Social Security benefit amount
The Social Security Administration sends you a statement each year showing the total benefits you received. If you receive benefits by direct deposit, your bank statement also shows the monthly amount. You can also create a my Social Security account at ssa.gov to view your benefit history and current payment amount.
If you received benefits for only part of the year — for example, you started benefits in June — use only the benefits you actually received, not the annual amount. The same applies if your benefits changed during the year due to a cost-of-living adjustment or a change in your circumstances.
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 benefits are taxed and at what income levels.
Some states follow the federal thresholds closely; others have lower thresholds or tax a higher percentage of benefits. A few states offer exemptions for people over a certain age or with income below a certain level. If you live in one of these states, you may need to file a state tax return even if you do not owe federal tax.
If you live in a state that does not tax Social Security — including Florida, Texas, and most others — you do not owe state tax on your benefits regardless of your income level. Check your state's tax agency website or a tax professional if you are unsure about your state's rules.
What to do if you think you will owe tax
If you expect your combined income to be high enough that some benefits will be taxable, you have two main options. First, you can make quarterly estimated tax payments to the IRS throughout the year, using Form 1040-ES. Second, you can ask Social Security to withhold federal income tax directly from your benefit payment, using Form W-4V. Withholding is often simpler because it happens automatically each month.
You can request withholding at any Social Security office, by phone at 1-800-772-1213, or online through your my Social Security account. You can choose to withhold 7, 10, 12, or 22 percent of your benefit payment, or you can request a specific dollar amount. If your tax situation changes during the year, you can adjust your withholding at any time.
Frequently Asked Questions
Do I have to file a tax return if I only receive Social Security?
Not necessarily. If Social Security is your only income and your combined income is below the first threshold for your filing status, you do not owe federal tax and do not have to file. However, if you have other income — wages, interest, or self-employment income — you may need to file even if your Social Security is not taxable.
What if I work and receive Social Security at the same time?
Your wages count as part of your adjusted gross income, which raises your combined income and makes it more likely that your benefits will be taxed. You may also face an earnings limit if you have not yet reached full retirement age — Social Security reduces your benefits if you earn above a certain amount, though this limit does not explore once you reach full retirement age.
Can I reduce my combined income to avoid taxation of my benefits?
Some strategies may lower your combined income, such as contributing to a traditional IRA or claiming certain deductions, but these are general tax planning decisions and not specific to Social Security. A tax professional can review your situation to see whether any strategies make sense for you.
Does the taxation of Social Security benefits affect my Medicare premiums?
No. Medicare premiums are based on your modified adjusted gross income, which is calculated differently than the combined income used for Social Security taxation. However, higher income can trigger higher Medicare Part B and Part D premiums, so your overall tax and premium situation is interconnected.
What if I made a mistake on a prior year's tax return involving Social Security?
You can file an amended return using Form 1040-X for any year within the past three years. If you believe you overpaid tax on your Social Security benefits, an amended return can recover that overpayment as a refund or credit toward future taxes owed.