Social Security Tax 2026
The check you waited your whole career for can still be taxed. Up to 85% of your Social Security benefit is federally taxable once your other income crosses a threshold — but many retirees keep it at 0% with the right income mix. Here is exactly how the 2026 math works.
0% taxable
Under $25k
Provisional income, single
Up to 50%
$25k–$34k
Single; $32k–$44k joint
Up to 85%
Over $34k
Single; over $44k joint
Thresholds
Fixed
No inflation adjustment
How Social Security Gets Taxed
Social Security is not automatically taxed. Whether any of it is taxed — and how much — depends on your provisional income (also called combined income):
- Your adjusted gross income (AGI) — wages, IRA withdrawals, pension, interest, dividends, capital gains
- Plus tax-exempt interest (municipal bond interest counts here even though it is tax-free)
- Plus one-half of your Social Security benefit
If that total stays under the first threshold, your entire benefit is tax-free. Cross it, and a slice of your benefit becomes taxable at your ordinary income-tax rate — but you are never taxed on more than 85% of the benefit.
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Enter your income to see the federal and state tax impact.
The 2026 Thresholds (Provisional Income)
| Filing status | 0% taxable | Up to 50% taxable | Up to 85% taxable |
|---|---|---|---|
| Single / head of household | Under $25,000 | $25,000 – $34,000 | Over $34,000 |
| Married filing jointly | Under $32,000 | $32,000 – $44,000 | Over $44,000 |
| Married filing separately* | Up to 85% of benefits taxable (no base exclusion) | ||
*Married-filing-separately filers who lived apart for the whole year use the single thresholds; otherwise up to 85% of benefits are taxable. These thresholds have been fixed since 1984 (single) and 1993 (joint) and are not indexed for inflation — which is why more retirees cross them every year.
How the 50% / 85% Tiers Work
A single retiree receiving $24,000 in Social Security illustrates the cliff clearly:
- Other income $10,000: provisional income = $10,000 + $12,000 (half the benefit) = $22,000. Under $25,000, so $0 of the benefit is taxable.
- Other income $25,000: provisional income = $25,000 + $12,000 = $37,000. Over $34,000, so up to 85% of the benefit — about $20,400 — becomes taxable.
Notice the cause is not the benefit itself, but the other income pulling provisional income over the line. That is the lever you control: the timing of IRA withdrawals, the source of your income, and whether you draw from Roth or traditional accounts.
How to Lower Taxable Social Security
- Draw Roth money first. Roth IRA withdrawals do not count in AGI, so they do not push provisional income up. Traditional IRA withdrawals do.
- Delay Social Security while converting. Doing Roth conversions in the years between retirement and claiming Social Security can shrink future required minimum distributions (RMDs) that would otherwise make more benefits taxable.
- Watch municipal-bond interest. It is tax-free for regular income tax, but it still counts in provisional income — a surprise many bond investors discover.
- Consider your state. Federal tax is only half the story. Most states do not tax Social Security at all, but about a dozen do (some fully, some partially).
Frequently Asked Questions
Is Social Security taxed at the state level?
Most states exempt Social Security entirely. A handful tax it — some (like Minnesota and Vermont) with their own income thresholds, others fully. Nine states have no income tax at all, so benefits are never taxed there.
Do the 2026 thresholds change from 2025?
No. The $25,000/$34,000 (single) and $32,000/$44,000 (joint) thresholds are set in statute and are not adjusted for inflation. They have been unchanged for decades, which is why a fixed benefit plus rising other income gradually pushes more retirees into the 85% tier.
Can I owe tax on 100% of my Social Security?
No. The maximum taxable portion is 85% of your benefit, no matter how high your other income. The other 15% is always tax-free.
Does the 65+ senior deduction help with Social Security tax?
The new $6,000 senior deduction lowers your taxable income after the Social Security calculation, so it reduces the tax on whatever portion of benefits is already taxable — but it does not change how much of the benefit is counted as taxable in the first place.
Sources
- IRS Publication 915 — Social Security and Equivalent Railroad Retirement Benefits (provisional income tiers).
- IRS Revenue Procedure 2025-32 — 2026 federal brackets and standard deduction used in the examples.
- Social Security Administration — benefit taxability thresholds ($25,000/$32,000 base amounts).
Figures are estimates for illustrative purposes and do not constitute tax advice. Your exact taxable benefit depends on the IRS Social Security benefits worksheet, your full income picture, and state rules.