Social Security taxation in 2026 depends on your total income, not on Social Security alone

Whether you owe federal income tax on your Social Security benefits in 2026 is determined by a formula called combined income, not by the amount of benefits you receive. Combined income adds your adjusted gross income, nontaxable interest, and half your Social Security benefits. If that total exceeds a certain threshold, a portion of your benefits becomes taxable.

The thresholds that determine taxation have not changed since 1984. For 2026, they remain at $25,000 for single filers and $32,000 for married couples filing jointly. These thresholds are not adjusted for inflation, which means more people cross them each year as their income grows.

If you are below the threshold, none of your Social Security is taxed. If you are above it, up to 50 percent or 85 percent of your benefits may be taxable, depending on how far above the threshold you are.

Key Takeaways

  • Your Social Security is taxed only if your combined income (wages, pensions, interest, plus half your benefits) exceeds $25,000 for single filers or $32,000 for married couples filing jointly.
  • The income thresholds have remained unchanged since 1984 and are not adjusted annually for inflation.
  • If you are above the threshold, the IRS uses a two-tier formula to calculate what percentage of your benefits becomes taxable—up to 50 percent at the first tier and up to 85 percent at the second.
  • State taxes on Social Security vary widely; some states tax it, some do not, and some exempt it entirely regardless of federal taxation.
  • You can reduce your tax burden by managing other income sources, such as delaying withdrawals from retirement accounts or timing investment sales.

How the combined income formula works

Combined income is the starting point for determining whether your Social Security is taxed. It is calculated as your adjusted gross income (the number at the bottom of your 1040 form before you claim the standard or itemized deduction) plus any nontaxable interest income plus half of your Social Security benefits for the year.

The IRS then compares this combined income total to your filing status threshold. If you are single and your combined income is $25,000 or less, you owe no federal tax on your Social Security. If you are married filing jointly and your combined income is $32,000 or less, the same applies. Married couples filing separately face a $0 threshold, meaning any combined income at all can trigger taxation.

Once you exceed the threshold, the calculation becomes more complex. The IRS uses a two-step process. In the first step, you calculate the excess over the first threshold ($9,000 for single filers, $12,000 for married filing jointly). Up to 50 percent of this excess, or up to 50 percent of your total benefits, whichever is smaller, becomes taxable.

If your combined income exceeds a second, higher threshold ($34,500 for single filers, $44,000 for married filing jointly), you move into the second tier. Here, up to 85 percent of your benefits may be taxed. The IRS publishes a worksheet each year to help you calculate the exact amount, and most tax software handles this automatically.

Why the thresholds have not changed since 1984

Congress set the current thresholds in the Social Security Amendments of 1983 as a way to make the program more solvent. At that time, $25,000 and $32,000 represented meaningful income levels that affected relatively few retirees. Because Congress has not updated these thresholds for inflation, they now affect far more people than originally intended.

This "bracket creep" means that even modest pension income, part-time work, or investment returns can push you over the threshold. A retiree with a $20,000 pension, $8,000 in Social Security, and $5,000 in interest income would have a combined income of $29,000 (20,000 + 5,000 + 4,000), exceeding the $25,000 single threshold by $4,000.

There is no automatic adjustment mechanism in the law, so the thresholds remain at their 1984 levels unless Congress votes to change them. Proposals to index the thresholds to inflation have been introduced in Congress multiple times but have not become law.

State taxes on Social Security in 2026

Federal taxation and state taxation of Social Security are separate. 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. The rules in each state differ significantly.

Some states, such as Colorado and Kansas, tax Social Security the same way the federal government does—using combined income thresholds. Others, such as Vermont and West Virginia, tax all benefits above a certain age or income level. A few states offer partial exemptions for retirees over a certain age or with income below a threshold.

If you live in one of the 37 states that do not tax Social Security, you owe no state income tax on your benefits regardless of your combined income. If you live in a state that does tax it, you will need to file a state return and calculate your state tax liability separately from your federal liability.

Strategies to reduce taxation of your benefits

Because combined income determines taxation, you can sometimes reduce the amount of your Social Security that is taxed by managing other income sources. One common strategy is to delay withdrawals from tax-deferred retirement accounts like traditional IRAs or 401(k)s if you do not yet need the money. Withdrawals from these accounts count toward combined income, while money already in a Roth IRA does not.

Another approach is to time the sale of investments. Long-term capital gains and may have access to dividends are included in adjusted gross income, which feeds into combined income. If you can spread investment sales across multiple years or defer them until a year when other income is lower, you may reduce the portion of your Social Security that is taxed.

If you are still working, earning wages does not reduce your Social Security benefit amount, but it does increase your combined income and may trigger taxation of benefits you would otherwise not owe tax on. Conversely, if you have not yet claimed Social Security, delaying your claim increases your monthly benefit amount going forward, which may or may not reduce your overall tax burden depending on your other income sources.

Tax-exempt interest from municipal bonds does not count toward combined income, so some retirees use these bonds as part of a broader strategy. However, this approach works only if you have significant investable assets and should be discussed with a tax professional or financial advisor.

How to report Social Security on your 2026 tax return

The Social Security Administration sends you a Form SSA-1099 by January 31 each year, showing the total benefits you received in the prior year. You use this form to report your benefits on your federal tax return.

If you are filing Form 1040, you report your Social Security on lines 5a and 5b. Line 5a shows your total benefits; line 5b shows the taxable portion after you have calculated it using the IRS worksheet or tax software. You do not report the full amount as income—only the taxable portion goes into your taxable income calculation.

If your only income is Social Security and it falls below the threshold, you may not be required to file a federal return at all. However, if you have other income or if you want to claim a refundable tax credit, you should file even if you have no tax liability.

Most tax software, including free versions offered through the IRS Free File program, will calculate your taxable Social Security automatically once you enter your SSA-1099 information. If you prepare your return by hand, the IRS publishes a detailed worksheet in Publication 915 each year.

What happens if you owe tax on your benefits

If you owe federal income tax on your Social Security, you pay it the same way you would pay any other income tax—either through withholding during the year or by making estimated tax payments, or by paying the balance when you file your return.

You can request that the Social Security Administration withhold federal income tax directly from your monthly benefit payment. This is done using Form W-4V, which you submit to your local Social Security office or online through your my Social Security account. Withholding is calculated as a flat percentage of your benefit—10, 15, 25, or 50 percent—and you can change it at any time.

If you do not request withholding and you owe a large amount of tax, you may need to make quarterly estimated tax payments to avoid penalties. The IRS charges a penalty if you underpay your tax by more than a certain amount during the year, even if you ultimately owe nothing when you file.

Frequently Asked Questions

Can I reduce my combined income by donating to charity?

Charitable donations reduce your taxable income only if you itemize deductions on Schedule A, and even then they do not reduce your adjusted gross income—they reduce your taxable income after you have already calculated combined income. For Social Security taxation purposes, charitable giving does not help unless you are using it as part of a broader strategy to reduce other income sources.

Does the earned income credit affect Social Security taxation?

The earned income tax credit is calculated separately from Social Security taxation and does not directly affect whether your benefits are taxed. However, if you claim the credit, it increases your refund or reduces your tax liability, which may offset some of the tax owed on your benefits.

What if I worked outside the United States and have foreign income?

Foreign earned income that is excluded from U.S. taxation under the foreign earned income exclusion still counts toward combined income for Social Security taxation purposes. This is one of the few situations where income that is not taxable still affects whether your benefits are taxed.

If I am married and file separately, can I avoid the $0 threshold?

No. Married couples filing separately face a $0 threshold, meaning any combined income triggers potential taxation of benefits. Filing separately is almost never advantageous for Social Security taxation and usually results in a higher overall tax bill. Consult a tax professional before choosing this filing status.

Does my spouse's Social Security count toward my combined income?

No. Combined income includes only your own benefits, your own adjusted gross income, and your own nontaxable interest. Your spouse's benefits and income are calculated separately on their own return, even if you file jointly.