Social Security and Taxes: What Gets Taxed and What Doesn't

Key Takeaways

• Social Security benefits are taxed based on your combined income and filing status, not your age.
• Up to 85 percent of your benefits may be included in taxable income, but that doesn’t mean you’ll pay an 85 percent tax rate.
• The federal income thresholds haven’t been adjusted for inflation in decades.
• The enhanced senior deduction is separate from the calculation that determines whether Social Security is taxable.
• Eight states may tax some Social Security benefits in 2026, although many residents qualify for exemptions or deductions.
• Some seniors discover back taxes they didn’t expect, but find that tax relief options exist.

Does Social Security Get Taxed? The Short Answer

Yes, Social Security can be subject to federal income tax, but the answer depends on your combined income and filing status — not your age or the size of your benefit alone.

If Social Security is your only income, your benefits generally won’t be taxable. If income from work, pensions, investments, or retirement-account withdrawals pushes you above the federal thresholds, up to 50 percent or 85 percent of your benefits may be included in your taxable income.1

That doesn’t mean the government takes 50 percent or 85 percent of your benefits. It means that portion is added to your other taxable income and taxed at your regular federal income tax rate.

How the IRS Calculates Combined Income

The IRS uses a figure commonly called combined income or provisional income. The basic formula is:

Adjusted gross income before taxable Social Security benefits

+ Tax-exempt interest

+ Half of your annual Social Security benefits

= Combined income

Tax-exempt interest is important here. For example, municipal-bond interest may be exempt from federal income tax, but it still gets added when determining whether your Social Security benefits are taxable.

A Simple Example

Let’s say Robert files as single, receives $20,000 in Social Security benefits, and withdraws $18,000 in taxable income from his 401(k). He has no other income or tax-exempt interest.

• Taxable 401(k) withdrawal: $18,000
• Half of Social Security benefits: $10,000
• Combined income: $28,000

Because Robert’s combined income falls between $25,000 and $34,000, up to 50 percent of his benefits may be taxable. The IRS worksheet determines the actual amount.

Federal Social Security Tax Thresholds for 2026

Once you know your combined income, compare it with the threshold for your filing status. These figures determine the maximum portion of your benefits that may be included in taxable income.

If you’re married filing but separately and lived apart from your spouse for the entire year, the $25,000 and $34,000 thresholds generally apply. If you lived with your spouse at any point during the year, your base amount is $0, so some benefits may be taxable even at a relatively low income.
These thresholds aren’t adjusted for inflation and haven’t changed in decades. Remember that “up to 50 percent” and “up to 85 percent” describe how much of your benefits may be included in taxable income — not your tax rate.

>> Try Our Tool: 2026 Social Security Calculator

What Counts Toward Combined Income?

Income that commonly affects the calculation includes:

• Wages and net self-employment income
• Taxable pensions and annuities
• Taxable withdrawals from traditional IRAs and 401(k)s
• Interest, dividends, and capital gains
• Tax-exempt interest, including municipal-bond interest

Qualified Roth IRA or Roth 401(k) distributions generally aren’t included in gross income, while nonqualified distributions may be partly taxable.3 Supplemental Security Income, or SSI, isn’t taxable.

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The Enhanced Senior Deduction for 2025–2028

For tax years 2025 through 2028, eligible taxpayers age 65 or older can claim an enhanced deduction of up to $6,000 per person. Married couples filing jointly may claim up to $12,000 if both spouses qualify.4

To qualify, you must:

• Be 65 or older by the final day of the tax year
• Have a valid Social Security number
• File a joint return if you’re married

The deduction is available whether you take the standard deduction or itemize. It begins to phase out when modified adjusted gross income exceeds $75,000 for most individual filers or $150,000 for joint filers. Because it phases out at a rate of 6 percent, it reaches zero at $175,000 for individual filers and $250,000 for joint filers.

This deduction doesn’t change the combined-income formula or the portion of Social Security considered taxable. Instead, it may reduce the overall federal income tax you owe.

>> Related Reading: Tax Relief for Seniors

Do States Tax Social Security?

Most states don’t tax Social Security benefits. For the 2026 tax year, eight states may tax at least some benefits: Colorado, Connecticut, Minnesota, Montana, New Mexico, Rhode Island, Utah, and Vermont.

Even in those states, income limits, deductions, and exemptions mean many residents won’t owe state tax on their benefits. West Virginia completed its phaseout of Social Security taxation in 2026.

The other 42 states and Washington, D.C., don’t tax Social Security benefits, but they may still tax pensions, retirement-account withdrawals, property, or purchases. We recommend checking your state revenue department’s current rules and reviewing our state tax guide for retirees.

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How to Estimate What You Owe

1. Find your SSA-1099 and note the total benefits reported in Box 5.
2. Gather records for wages, pensions, retirement-account withdrawals, interest, dividends, capital gains, and tax-exempt interest.
3. Add half of your Social Security benefits to your other applicable income.
4. Compare that combined-income figure with the threshold for your filing status.
5. Use IRS Publication 915, tax software, or a qualified tax professional to calculate the taxable portion.

We recommend using this manual calculation as an estimate rather than your final tax figure. Deductions, adjustments, and unusual income can affect the result. If you find that these steps reveal a balance from a prior year, the next section on owing back taxes covers your options.

If You Owe Back Taxes

Many seniors are surprised to discover they owe the IRS or their state at all, often because they didn't realize a life change had pushed them into a higher tax bracket. A pension starting, a required minimum distribution kicking in, or simply more of their Social Security becoming taxable once other income is added in can quietly raise someone's bracket. Because retirement income doesn't always have taxes withheld automatically the way a paycheck does, that shift can go unnoticed until a balance has already built up over one or more years.

If you're preparing a current return, a CPA, enrolled agent, or qualified tax preparer may be able to help. If you have unresolved taxes from earlier years, we suggest starting with the IRS notice and your IRS Online Account, so you know exactly what the agency says you owe.

Depending on your circumstances, options may include an IRS payment plan or, for eligible taxpayers, an offer in compromise. Tax relief companies can help some consumers evaluate or apply for these programs, but no company can guarantee that the IRS will reduce a balance.

We recommend reviewing credentials, written fees, cancellation terms, and promises carefully before signing an agreement. The IRS specifically warns consumers about companies that promise unrealistically inexpensive settlements.

If you decide professional help makes sense for your situation, Tax Relief Advocates is one we highly recommend — the firm holds an A+ Better Business Bureau rating and staffs cases with in-house tax attorneys, CPAs, and enrolled agents, which is a useful baseline to compare against any provider you're considering. As with any tax relief company, it’s important to get its fee structure in writing before signing anything.

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Ways to Potentially Lower Your Tax Bill

A few planning strategies may help manage combined income, but they aren’t right for everyone:

• Spread taxable retirement-account withdrawals across multiple years when practical instead of taking one large distribution.
• If you already have Roth savings, ask whether qualified Roth withdrawals could meet your needs without increasing taxable income.
• Model a Roth conversion carefully. The converted amount generally increases income in the year of the conversion.
• If you’re age 70½ or older, ask whether a qualified charitable distribution from an IRA could satisfy charitable goals without adding the distribution to taxable income.6
• Review when to claim Social Security as part of your broader retirement plan, rather than making the decision based on taxes alone.
• Consider voluntary tax withholding if you’d rather avoid a large bill at filing time.
• If you're dealing with unresolved back taxes, consider seeking help from a highly qualified tax- relief company like Tax Relief Advocates.

We recommend discussing major withdrawals, conversions, or claiming decisions with a tax or financial professional who can review your complete situation.

>> Learn About: Common Health and Medical Tax Deductions for Seniors

Common Myths About Social Security and Taxes

Myth: “Social Security is never taxed.”
Fact: Whether your benefits are taxable depends on your combined income and filing status.

Myth: “Once I cross a threshold, all of my benefits are taxed.”
Fact: No more than 85 percent of your benefits can be included in taxable income.

Myth: “An 85 percent taxable benefit means an 85 percent tax rate.”
Fact: It means up to 85 percent of the benefit is added to your taxable income. Your normal federal income tax rate then applies.

Myth: “If I owe back taxes, my only option is to pay the IRS in full right away.” 

Fact: Payment plans and other professional tax debt relief options exist.

The Bottom Line

Social Security taxation becomes easier to understand once you know two things: your combined income and your filing status. Those figures determine whether any of your benefits are taxable and whether the maximum taxable portion is 50 percent or 85 percent.

The enhanced senior deduction is a separate benefit that may lower your overall federal tax bill, but it doesn’t change the combined-income calculation. We recommend starting with your SSA-1099 and IRS Publication 915, then asking a qualified professional for help if your income sources or filing situation are complicated.

If you discover you owe back taxes as a result of this calculation, know that you're not alone — it's a common surprise for retirees whose income sources shifted without a corresponding change in withholding. Options like an IRS payment plan or an offer in compromise may help; however, a qualified tax relief company can walk you through evaluating them if the debt feels too complex to handle alone.