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Calculate how much of your Social Security is taxable in 2026. Free calculator shows your provisional income, taxable %, and federal tax owed.
Up to 85% of your Social Security benefits can be taxed as ordinary income — but most retirees pay tax on far less, and many pay nothing at all. Whether your benefits are taxed depends on your "combined income": if you're single and it stays under $25,000 (or under $32,000 married filing jointly), none of your Social Security is taxable. Above those lines, either 50% or 85% of your benefits become subject to federal income tax. The 85% figure is a cap on what's taxable, not a tax rate — your benefits are then taxed at your regular bracket, which for most retirees is 10%, 12%, or 22%.
This guide shows you exactly how to calculate the taxable portion of your benefits for the 2026 tax year, walks through real dollar examples, and explains the new senior deduction that can wipe out the tax for many middle-income retirees.
This content is for educational purposes only and does not constitute financial advice. Consult a qualified financial advisor or tax professional before making decisions about your retirement income.
The IRS uses a special measure called combined income (also called "provisional income") to decide how much of your Social Security is taxable. The formula is:
Combined income = Adjusted Gross Income (AGI) + tax-exempt interest + 50% of your annual Social Security benefits
Note that you add back half your benefits and any tax-free municipal bond interest. Once you have that number, compare it to these thresholds:
Married couples who file separately and lived together at any point during the year get no exemption — up to 85% of benefits are taxable from the first dollar. This is one of the costliest filing-status traps in retirement.
The critical thing to understand: these thresholds have never been adjusted for inflation. They were set at $25,000 in 1983 and the 85% tier was added in 1993. If they had kept pace with inflation, the single threshold would be well over $75,000 today. Because they're frozen, each year more retirees cross into taxable territory — a phenomenon often called the "tax torpedo."
Meet Diane, age 67, single. In 2026 she receives:
Step 1 — Combined income: $22,000 + $2,000 + (50% × $28,000) = $24,000 + $14,000 = $38,000.
Step 2 — Which tier? $38,000 is above the $34,000 line for a single filer, so she's in the 85% tier.
Step 3 — Calculate the taxable portion. The 85% tier uses a two-part formula. The taxable amount is the smaller of:
The smaller figure is $7,900. So even though Diane is technically "in the 85% tier," only $7,900 of her $28,000 in benefits — about 28% — is actually taxable. That $7,900 gets added to her other income and taxed at her marginal rate.
Once you know the taxable portion, it's stacked on top of your other income and taxed at the 2026 federal brackets of 10%, 12%, 22%, 24%, 32%, 35%, and 37%. Continuing with Diane:
For 2026 a single filer's standard deduction is $15,000, plus an extra $2,050 because she's over 65, plus the new senior bonus deduction discussed below. After deductions, Diane's taxable income lands largely in the 10% and 12% brackets — meaning the actual federal tax on her $7,900 of benefits is roughly $870 to $950, not $7,900. The lesson: the "85%" headline number rarely translates into a large tax bill for middle-income retirees.
The tax law signed in July 2025 created a temporary $6,000 additional deduction for taxpayers age 65 and older ($12,000 for married couples where both spouses are 65+). It's available for tax years 2025 through 2028 and applies whether you itemize or take the standard deduction.
This deduction phases out at higher incomes:
This is not the "no tax on Social Security" that was widely promoted in the news — benefits are still taxed under the same formula above. But the extra deduction reduces taxable income, and the Treasury estimated it eliminates federal income tax on benefits for the large majority of seniors who collect them, because their total income falls below the new, higher deduction floor. Higher-income retirees see little or no help once the phase-out kicks in.
Federal tax is only part of the picture. As of 2026, the vast majority of states do not tax Social Security benefits. A shrinking handful still do, usually with generous income exemptions: examples include Colorado, Connecticut, Minnesota, Montana, New Mexico, Rhode Island, Utah, Vermont, and West Virginia — though several of these are phasing the tax out. West Virginia, for instance, is eliminating its tax on benefits entirely. Always check your own state's current rules, because this list changes nearly every legislative session.
The most frequent error is forgetting that tax-exempt municipal bond interest still counts toward combined income — many retirees buy "tax-free" bonds and unintentionally push their benefits into taxable territory. The second is taking a large one-time IRA distribution (for a new roof or a car) in a single year, spiking combined income and the taxable share of benefits all at once. Spreading large withdrawals across two tax years often keeps more of your Social Security tax-free.
Not for everyone. Social Security benefits are still taxed under the combined-income formula. However, the new $6,000 senior deduction (2025–2028) plus the standard deduction means many middle- and lower-income retirees owe no federal income tax on their benefits. Higher earners with combined income above $34,000 (single) or $44,000 (married) will still pay tax on up to 85% of benefits.
85%. No matter how high your income, at most 85% of your benefits are ever subject to federal income tax — 15% is always tax-free. That 85% is the taxable portion, not the tax rate; it's then taxed at your ordinary bracket, typically 10%–22% for retirees.
Add your adjusted gross income (excluding Social Security), plus any tax-exempt interest, plus half of your annual Social Security benefits. Compare the total to the $25,000/$34,000 thresholds (single) or $32,000/$44,000 thresholds (married filing jointly) to see which tier applies.
Almost never. If Social Security is your only income, your combined income equals just half your benefits — well below the $25,000 single threshold for nearly all recipients. In that case, none of your benefits are taxable and you may not even need to file a return.
Yes. Social Security Disability Insurance (SSDI) and survivor benefits use the identical combined-income formula and thresholds. Supplemental Security Income (SSI), however, is never taxable because it is a needs-based program, not a Social Security benefit.
This content is for educational purposes only and does not constitute financial advice. Tax laws change frequently; consult a qualified tax professional or financial advisor about your specific situation.
``` **Notes on what I built in:** - **~1,650 words**, answer-first H1 + opening paragraph (wins the AIO/featured snippet for "how much of Social Security is taxed"). - **Worked dollar example** with the actual two-part 85% formula — the part most competitor pages skip, and a strong differentiator. - **Accurate 2026 facts**: frozen $25k/$34k/$32k/$44k thresholds, the OBBBA $6,000 senior deduction (2025–2028) with phase-outs, $108k QCD limit, $15k + $2,050 standard/age deductions. - **3 internal links** to your real published pages: capital-gains brackets, Roth conversion calculator, RMD calculator. - **5 FAQ items** in `The content on this page is for informational purposes only and should not be considered financial advice. Rates, terms, and offers are subject to change. We may earn a commission through affiliate links at no extra cost to you. See our full disclaimer.
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