Whether Your Benefits Are Taxed Depends on Your Other Income

Social Security benefits may or may not be taxed, depending on how much other income you have. The IRS uses a formula called combined income to decide. If your combined income stays below a certain threshold, your benefits are not taxed at all. If it goes above that threshold, between 0% and 85% of your benefits become taxable income on your federal return.

Combined income is not the same as your total income. It is calculated by taking your adjusted gross income, plus any non-taxable interest, plus half of your Social Security benefits. That total is what the IRS compares to the thresholds. The thresholds themselves have not changed since 1984, so more people cross them each year as wages rise.

Key Takeaways

  • Combined income is the measure the IRS uses, and it includes half your Social Security benefits plus your other income sources.
  • If you are single and your combined income is under $25,000, your benefits are not taxed; between $25,000 and $34,000, up to 50% may be taxed; above $34,000, up to 85% may be taxed.
  • If you are married filing jointly, the thresholds are $32,000 and $44,000 respectively.
  • Married couples filing separately face taxation on benefits at almost any combined income level.
  • You can reduce your combined income by earning less in a given year, withdrawing from tax-deferred retirement accounts strategically, or timing when you claim benefits.

The Three Income Thresholds for Single Filers

For someone filing as single, the IRS has set two thresholds. If your combined income is $25,000 or less, none of your Social Security is taxed. If it is between $25,000 and $34,000, up to 50% of your benefits become taxable. If it exceeds $34,000, up to 85% of your benefits become taxable.

The word "up to" matters. You will not automatically owe tax on the full percentage. The actual amount taxed depends on how far above the threshold you are. The IRS provides a worksheet to calculate the exact figure, and most tax software does this automatically when you enter your Social Security income.

These thresholds have remained the same since 1984. Because wages and cost of living have risen significantly since then, a much larger share of Social Security recipients now pay tax on their benefits than did in the 1980s.

Different Thresholds for Married Couples Filing Jointly

Married couples filing a joint return have higher thresholds than single filers. The first threshold is $32,000 of combined income, below which no benefits are taxed. The second is $44,000, above which up to 85% of benefits become taxable. Between those two amounts, up to 50% may be taxed.

If you are married but file separately, the thresholds are much lower. In fact, if you lived with your spouse at any point during the year and file separately, you face taxation on your benefits at almost any combined income level. This filing status is rarely used by couples for this reason.

What Counts as Income for This Calculation

Combined income includes your adjusted gross income from all sources: wages, self-employment income, pensions, interest, dividends, capital gains, and distributions from retirement accounts. It also includes non-taxable interest from municipal bonds, which most people do not think of as "income" but the IRS counts here.

Combined income does not include certain items. Supplemental Security Income (SSI) does not count. Neither do veterans' benefits, workers' compensation, or certain railroad retirement benefits. Roth IRA conversions and Roth IRA distributions do not count toward combined income, though traditional IRA distributions do.

The half of your Social Security benefits that you add to the calculation is not money you actually receive twice — it is only used for the tax formula. Your actual benefit amount stays the same.

How the Tax Is Calculated Once You Cross a Threshold

Once your combined income exceeds the first threshold, the IRS uses a two-step formula. First, it calculates how much of your benefits fall in the range between the first and second threshold. That amount is multiplied by 50%. Then, if your combined income exceeds the second threshold, the excess is multiplied by 85%, and that result is added to the first calculation.

The final number is the amount of your Social Security benefits that becomes taxable income. You report this on your federal tax return, usually on Form 1040 and Schedule 1. The taxable portion is then subject to your ordinary income tax rate.

Because the calculation is complex, the IRS provides a worksheet in the instructions to Form 1040. Tax software, including free options like IRS Free File, will do this calculation for you if you enter your Social Security income.

State Taxes on Social Security Benefits

Federal tax and state tax are separate. Most states do not tax Social Security benefits at all. However, a handful of states do: Colorado, Connecticut, Kansas, Minnesota, Missouri, Montana, Nebraska, New Mexico, Rhode Island, Utah, and Vermont. Each state has its own income thresholds and rules.

If you live in one of these states, you will need to check your state's tax rules separately. Some states offer exemptions based on age or income level. For example, some states exempt benefits for people over a certain age, or exempt a portion of benefits if your income is below a state-specific threshold.

You can find your state's rules on your state's department of revenue website, or ask a tax preparer familiar with your state's rules.

Strategies to Reduce Taxable Benefits

If your combined income is close to a threshold, you have a few options to consider. One is to reduce your earned income in a given year — for example, by retiring or reducing work hours. Another is to time withdrawals from tax-deferred retirement accounts. Instead of taking a large distribution in one year, you might spread it across multiple years to keep combined income lower in some of them.

Roth conversions are another tool. When you convert money from a traditional IRA to a Roth IRA, the conversion amount is taxable in that year, but future distributions from the Roth are not. This can be useful if you are in a low-income year and want to move money into a tax-free account before your Social Security benefits begin.

The timing of when you claim Social Security also affects your combined income. If you claim at 62, you receive a smaller monthly benefit but begin collecting sooner. If you delay until 70, your monthly benefit is larger. Delaying can reduce your combined income in earlier years, which may lower the tax on your benefits in those years.

These strategies have trade-offs and depend on your personal situation. A tax professional or financial planner can help you think through which approach makes sense for you.

Frequently Asked Questions

Do I have to pay tax on all of my Social Security benefits?

No. If your combined income is below the first threshold, none of your benefits are taxed. Even if you are above the thresholds, only up to 85% of your benefits can be taxed — never 100%. Most people who do pay tax on benefits pay tax on somewhere between 0% and 50% of them.

What if I have very little income besides Social Security?

If your only income is Social Security and you are single, you would need combined income above $25,000 before any benefits are taxed. If you are married filing jointly, you would need combined income above $32,000. For most people in this situation, no tax is owed.

Does working part-time while collecting Social Security affect my taxes?

Yes. Wages from part-time work count as income in the combined income calculation. If your wages push your combined income above a threshold, some of your benefits become taxable. However, there is no earnings limit on benefits once you reach full retirement age, so you can work as much as you want without losing benefits.

Can I avoid paying tax on my benefits by not reporting them?

No. The Social Security Administration reports all benefits to the IRS, and you must report them on your tax return. Failing to do so is tax evasion. If you owe tax on your benefits, you can pay it with your return, or you can ask Social Security to withhold taxes from your monthly benefit payment.

What if I made a mistake on my tax return regarding Social Security?

You can file an amended return using Form 1040-X. You have generally three years from the original due date to file an amended return and claim a refund. If you owe additional tax, you should file the amended return as soon as you notice the error to avoid penalties and interest.