Whether your Social Security is taxed depends on your other income
Social Security benefits are not automatically taxed. Whether you owe federal income tax on them depends on your combined income — a specific calculation that includes your wages, pensions, interest, dividends, and half of your Social Security benefits. If your combined income stays below a certain threshold, you pay nothing on your benefits. If it crosses that threshold, up to 50 percent or 85 percent of your benefits become taxable, depending on how far over you go.
The thresholds are the same whether you file single or married, and they have not changed since 1984. This means more people's benefits become taxable each year as wages and other income rise, even though the thresholds stay fixed.
Key Takeaways
- Combined income is calculated as your adjusted gross income plus nontaxable interest plus half your Social Security benefits, and determines whether any benefits are taxed.
- Single filers with combined income under $25,000 and married filers under $32,000 pay no tax on benefits; amounts above those thresholds trigger taxation on 50 to 85 percent of benefits.
- The IRS does not automatically withhold tax from Social Security payments, so you may owe at tax time if your combined income is high enough.
- You can request voluntary withholding from your Social Security check using Form W-4V, which reduces what you owe in April.
How combined income is calculated
Combined income is not the same as your total income. The IRS defines it as your adjusted gross income (the income you report on your tax return before deductions) plus any nontaxable interest you earned (such as interest from municipal bonds) plus half of your Social Security benefits.
Example: You receive $20,000 in Social Security benefits and have $15,000 in pension income. Your combined income is $15,000 plus half of $20,000 (which is $10,000), for a total of $25,000. If you are single, this puts you exactly at the first threshold, so some of your benefits become taxable.
The calculation includes income from all sources: W-2 wages, self-employment income, rental income, capital gains, distributions from retirement accounts, and taxable pensions. It does not include Supplemental Security Income (SSI) or certain veterans' benefits.
The two income thresholds and how much gets taxed
The IRS uses two thresholds to determine how much of your benefits are taxable. These thresholds apply to the tax year in which you receive the benefits.
| Filing Status | First Threshold | Second Threshold |
|---|---|---|
| Single, head of household, or may have access to widow(er) | $25,000 | $34,000 |
| Married filing jointly | $32,000 | $44,000 |
| Married filing separately | $0 | $0 |
If your combined income is below the first threshold, none of your benefits are taxed. If it falls between the first and second threshold, up to 50 percent of your benefits become taxable. If it exceeds the second threshold, up to 85 percent of your benefits become taxable.
The actual amount taxed is calculated using a formula. For income between the first and second threshold, you take the lesser of (1) half your benefits or (2) half the amount your combined income exceeds the first threshold. For income above the second threshold, the calculation is more complex and involves both the 50 percent and 85 percent tiers, but the maximum taxable is 85 percent of your total benefits.
State taxes on Social Security
Thirteen states tax Social Security benefits: Colorado, Connecticut, Kansas, Minnesota, Missouri, Montana, Nebraska, New Mexico, Rhode Island, Utah, Vermont, and West Virginia. The rules in each state differ from federal rules and from each other.
Some states exempt benefits entirely for people over a certain age (often 55 or 60). Others use income thresholds similar to the federal system but with different dollar amounts. A few states tax benefits the same way the federal government does. You will need to check your state's tax authority website or speak with a tax preparer familiar with your state's rules.
Even if your state taxes benefits, you may not owe state tax if your income is low enough. State exemptions and thresholds are separate from federal ones.
How to request withholding from your Social Security check
The Social Security Administration does not automatically withhold federal income tax from your benefits. If you know your benefits will be taxed, you can request voluntary withholding to avoid a large tax bill in April.
To request withholding, fill out Form W-4V (Voluntary Withholding Request) and mail it to your local Social Security office, or bring it in person. You can download the form from ssa.gov. On the form, you choose a withholding rate: 7 percent, 10 percent, 12 percent, or 22 percent of your benefit amount.
The withholding starts with your next benefit payment after Social Security processes your request, which usually takes two to four weeks. You can change or stop withholding at any time by submitting a new Form W-4V. If you want to withhold a specific dollar amount instead of a percentage, you can request that on the form as well.
What happens if you do not withhold and owe tax
If you do not request withholding and your combined income is high enough that your benefits are taxed, you will owe federal income tax when you file your return. You can pay this tax when you file, or you can make quarterly estimated tax payments throughout the year using Form 1040-ES.
If you owe a large amount and did not pay anything during the year, you may owe a penalty for underpayment of estimated tax. Requesting withholding from your Social Security check is usually simpler than calculating and paying estimated taxes yourself.
When you file your tax return, your benefits appear on Form SSA-1099, which Social Security mails to you by January 31 each year. You use this form to report your benefits on your federal return.
Frequently Asked Questions
Do I have to pay tax on my Social Security if I am still working?
Your work income counts toward your combined income, which determines whether benefits are taxed. If your wages plus other income plus half your benefits exceeds the threshold for your filing status, some benefits become taxable. Work income does not change the tax rules — it just makes it more likely you will cross the threshold.
What if I have a large capital gain one year — will that make my benefits taxable?
Yes. Capital gains count as income for the combined income calculation. A one-time large gain can push you over the threshold in that year only. You would owe tax on benefits for that year, but if your income returns to normal the next year, you may not owe tax on benefits then.
Can I reduce my combined income to avoid taxation of benefits?
Some strategies can lower combined income — for example, contributing to a traditional IRA reduces adjusted gross income. However, you cannot eliminate combined income entirely if you have substantial other income. A tax professional can review your situation and suggest options specific to your circumstances.
If my spouse and I file separately, why is the threshold $0?
The IRS treats married couples filing separately as higher-risk for tax purposes. If you file separately and received any Social Security benefits, up to 85 percent of your benefits are taxable regardless of your combined income. This rule encourages married couples to file jointly.
Will the thresholds ever increase?
Congress would have to pass legislation to raise the thresholds. They have been $25,000 and $34,000 (single) and $32,000 and $44,000 (married filing jointly) since 1984. No automatic adjustment exists, so the thresholds remain fixed even as inflation and wages rise.