Social Security income can be taxed by the federal government, and sometimes by your state, depending on your total income for the year

You paid into Social Security through payroll taxes while you worked. But when you receive those benefits, the federal government may tax that money again. This happens because Congress changed the tax law in 1983 to make part of Social Security benefits taxable income. The amount you owe depends on your combined income—not just your Social Security check, but also wages, interest, dividends, and other money you receive.

The reason for this rule was financial: Social Security faced a funding shortfall, and taxing benefits for higher-income retirees was one way to shore up the program without raising payroll taxes on workers. Today, the rule remains in place, and it affects millions of people who receive benefits.

Key Takeaways

  • Between 50 and 85 percent of your Social Security benefits may be taxable, depending on whether your combined income exceeds certain thresholds set by the IRS.
  • Combined income includes your adjusted gross income, nontaxable interest, and half of your Social Security benefits—not just the benefits themselves.
  • If you file taxes and your combined income is below the IRS threshold for your filing status, you owe no federal tax on your benefits.
  • Some states do not tax Social Security benefits at all, while others tax them under their own rules separate from federal tax.
  • You can ask the Social Security Administration to withhold taxes from your monthly check, or you can pay estimated taxes quarterly to avoid a large bill at tax time.

How the IRS calculates whether your benefits are taxable

The IRS uses a formula based on your combined income, which is different from your adjusted gross income. Combined income includes your adjusted gross income plus any nontaxable interest you earned (such as interest from municipal bonds) plus half of your Social Security benefits. Once you know your combined income, you compare it to two thresholds that depend on your filing status.

For single filers in 2024, if your combined income is $25,000 or less, none of your benefits are taxable. If it is between $25,000 and $34,000, up to 50 percent of your benefits may be taxable. If it exceeds $34,000, up to 85 percent of your benefits may be taxable. For married couples filing jointly, the thresholds are $32,000 and $44,000. These thresholds have not changed since 1983, even though the cost of living has risen significantly.

The actual calculation is complex—the IRS worksheet in the instructions for Form 1040 walks you through it line by line. Many people use tax software or a tax preparer to determine the exact amount. If you want to know before tax time whether you will owe, you can use the Social Security Administration's online estimator or call them at 1-800-772-1213.

Why Congress made this change in 1983

In the early 1980s, Social Security faced a crisis. The trust fund that pays benefits was running out of money because people were living longer and the ratio of workers to retirees was shrinking. Congress formed a commission to recommend fixes, and one recommendation was to make benefits taxable for people with higher incomes.

The logic was that Social Security was partly funded by general tax revenue (not just payroll taxes), so it was fair to tax the benefits themselves for people who could afford to pay. It was also a way to raise revenue without raising the payroll tax rate on current workers. The change was meant to affect only higher-income retirees, but because the income thresholds have never been adjusted for inflation, more and more middle-income people have been caught by the rule over time.

The difference between federal and state taxation

Federal tax on Social Security benefits is separate from state income tax. Thirteen states tax Social Security benefits under their own rules: Colorado, Connecticut, Kansas, Minnesota, Missouri, Montana, Nebraska, New Mexico, Rhode Island, Utah, Vermont, and West Virginia. The rules in these states vary—some follow the federal thresholds, others use different income limits, and some exclude benefits for people over a certain age.

Thirty-seven states and the District of Columbia do not tax Social Security benefits at all, regardless of your income. If you live in one of those states, you will not owe state tax on your benefits even if you owe federal tax. If you move to a different state after you start receiving benefits, your state tax situation may change. You can find your state's rule by searching "[your state] Social Security tax" or by contacting your state's tax department.

How to manage taxes on your Social Security income

You have two main options: withhold taxes from your monthly check, or pay estimated taxes on your own schedule. To withhold taxes, fill out Form W-4V and send it to your local Social Security office or mail it to the address on the form. You can choose to have 7, 10, 12, or 22 percent of your monthly benefit withheld. This method is straightforward because the money comes out automatically, but it may not be exact if your income changes during the year.

If you prefer to pay estimated taxes, you can make quarterly payments to the IRS using Form 1040-ES. This method gives you more control but requires you to calculate and pay on your own schedule. Many people use a combination: they withhold some taxes from Social Security and pay estimated taxes on other income like pensions or investment earnings.

If you do not withhold or pay estimated taxes and you owe a large amount at tax time, you may owe a penalty for underpayment. The penalty is usually small, but it adds to your bill. To avoid this, aim to have at least 90 percent of your current year tax withheld or paid, or 100 percent of your prior year tax (whichever is smaller).

What happens if you work while receiving Social Security

If you are under full retirement age and you work, Social Security reduces your monthly benefit by $1 for every $2 you earn above the annual limit. In 2024, the limit is $23,400. The year you reach full retirement age, the reduction is $1 for every $3 you earn above a higher limit ($62,160 in 2024), but only for earnings before the month you reach full retirement age. Once you reach full retirement age, there is no earnings limit and no reduction.

This earnings test is separate from income tax. Even if your earnings reduce your benefit, you may still owe income tax on the reduced benefit amount if your combined income exceeds the IRS threshold. The two rules work independently: one affects how much you receive, and the other affects how much of what you receive is taxable.

Planning ahead to reduce your tax burden

If you know you will owe tax on your benefits, you can plan ahead to manage it. One strategy is to time large income events—such as selling a home or taking a lump-sum distribution from a retirement account—in a year when your other income is low. Another is to convert traditional IRA funds to a Roth IRA in a low-income year, which increases your taxable income that year but may reduce it in future years.

Some people delay claiming Social Security until age 70 to receive a larger monthly benefit, which can reduce the percentage of their income that comes from benefits and lower their overall tax burden. Others claim at 62 and accept the permanent reduction in order to receive benefits while they are younger. The tax impact is one factor to consider in this decision, but it is not the only one.

If you have questions about your specific situation, the Social Security Administration and the IRS both offer free resources. You can also work with a tax preparer or financial planner who understands how Social Security taxation works.

Frequently Asked Questions

Can I avoid paying tax on Social Security by not reporting it?

No. Social Security benefits are reported to the IRS automatically on Form SSA-1099, which you receive in January. The IRS knows about your benefits whether you report them or not. Failing to report them can result in penalties and interest on unpaid taxes.

If I did not work long enough to earn Social Security, do I still pay tax on spousal or survivor benefits?

Yes. Spousal benefits, survivor benefits, and divorced spousal benefits are all subject to the same tax rules as retirement benefits. The combined income threshold and the percentage of benefits that are taxable explore the same way.

What if my income is below the threshold one year but above it the next?

You only owe tax on benefits in years when your combined income exceeds the threshold for your filing status. If your income drops below the threshold, you owe no federal tax on your benefits that year. Your tax situation can change year to year depending on your income.

Do I have to file taxes if my only income is Social Security?

If your only income is Social Security and your combined income is below the IRS threshold, you do not have to file a federal tax return. However, if you have other income or if you want to claim a refundable tax credit, you may benefit from filing even if you are not required to.

Why have the income thresholds not changed since 1983?

Congress would need to pass a new law to adjust the thresholds for inflation. Because the thresholds have remained fixed, more people have been affected by the tax over time as incomes and the cost of living have risen. This is sometimes called "bracket creep," and it affects more middle-income retirees each year.