Is your Social Security taxable?

Is Social Security taxable?

Yes, for many retirees — but never all of it. Up to 85% of your benefits can be counted as taxable income. If half your benefits plus all your other income stays at or below $25,000 ($32,000 for married couples filing jointly), none of your Social Security is taxed by the federal government.

Congress set those thresholds decades ago and, unlike the tax brackets and the standard deduction, they have never been adjusted for inflation. Each cost-of-living raise pushes a few more retirees over the line, which is why a couple who paid nothing on their benefits ten years ago may pay today with no change in how they live.

“Taxable” doesn’t mean you lose that share. The taxable part is added to your other income, and you pay your normal rate on it — often 10% or 12%, and sometimes nothing once your deductions are subtracted.

How much of my Social Security is taxable?

Between 0% and 85%, depending on your filing status and provisional income. The IRS worksheet taxes 50% of each dollar of provisional income above the base amount, then 85% of each dollar above the adjusted base amount, and never more than 85% of your benefits in total.

Watch the last row. Married, filing separately and living together at any point in the year means a base amount of $0: 85% of your provisional income is taxable from the first dollar. Filing separately to “protect” benefits almost always backfires.

Here is how it plays out for a single retiree, 65 or older, with $24,000 of Social Security, as IRA withdrawals rise (2026 tax figures):

What is provisional income?

Provisional income — Social Security’s website calls it combined income — is half of your Social Security plus all your other income, including tax-exempt interest. It is figured before the standard or itemized deduction, so neither those nor the new senior deduction lowers it.

Counts in full:

• IRA, 401(k) and 403(b) withdrawals, including RMDs and Roth conversions
• Pensions, annuities and wages
• Interest, dividends and capital gains — even gains taxed at 0%
• Tax-exempt municipal bond interest

Doesn’t count:

• Qualified Roth IRA withdrawals
• Qualified charitable distributions (QCDs) sent straight from an IRA to charity
• Money you take from savings, or the part of an investment sale that is your original cost
• Health savings account (HSA) withdrawals for medical bills

The only subtractions allowed are the “adjustments” on Schedule 1, such as half of self-employment tax or a deductible traditional IRA contribution — and not even all of those: student-loan interest is added back.

The mistake we see most: buying municipal bonds to keep Social Security untaxed. The interest is free of federal tax itself, but it goes straight into provisional income and can make more of your benefits taxable.

Did the One Big Beautiful Bill make Social Security tax-free?

No. The law signed on July 4, 2025 left the Social Security formula untouched. It added a temporary $6,000 deduction for each person 65 or older, for tax years 2025–2028. For many retirees that deduction wipes out the tax, but up to 85% of benefits still counts as taxable income.

Social Security’s own press release said “nearly 90% of Social Security beneficiaries will no longer pay federal income taxes on their benefits.” That describes the effect of the bigger deduction, not a change to the rules — and the deduction ends after 2028 unless Congress extends it.

Example: a couple, both 65, with $40,000 of Social Security and $30,000 of IRA withdrawals. The worksheet still makes $11,100 of their benefits taxable. After the standard deduction and $12,000 of senior deductions they owe $0; without the senior deduction they would owe $560.

• $6,000 per person 65 or older — $12,000 for a married couple who both qualify.
• It shrinks by 6% of modified adjusted gross income above $75,000 ($150,000 joint) and is gone at $175,000 ($250,000 joint).
• You get it whether you itemize or not, on top of the extra standard deduction for age ($2,050 single or head of household, $1,650 per married person in 2026).
• Married couples must file jointly, and each person needs a valid Social Security number.
• It doesn’t lower adjusted gross income, so it changes neither your taxable benefits nor your Medicare IRMAA surcharge.

What is the Social Security tax torpedo?

It’s the income range where each extra dollar you withdraw also makes 50 or 85 cents of Social Security taxable. Your real rate there is 1.5 or 1.85 times your bracket, so a 12% bracket behaves like 22.2% and a 22% bracket like 40.7%.

The calculator above draws this curve for your own numbers. Older articles quote higher peaks because they use older, higher tax brackets. One more trap: if you have qualified dividends or long-term gains near the top of the 0% capital-gains band, each extra IRA dollar can also push gains into the 15% band — real rates near 49.95% are possible.

The torpedo has an end: once 85% of your benefits is taxable, the extra charge stops and you are back to your normal bracket. Before you decide how much to withdraw or convert each year, find where your zone starts and ends — the chart in the calculator shows it — because a dollar inside the zone can cost nearly twice what the same dollar costs on either side of it.

How can I reduce the tax on my Social Security?

Lower your provisional income, not just your taxable income. The levers that work are qualified charitable distributions, Roth money, and timing: doing more of your IRA withdrawals or Roth conversions in the years before benefits start, so less lands on top of Social Security later.

• QCDs from age 70½. Up to $111,000 per person in 2026 can go straight from an IRA to charity, count toward your RMD and never enter provisional income. That beats the new deduction for non-itemizers ($1,000, $2,000 joint), which comes off after the worksheet.
• Roth conversions in the gap years. Between retirement and claiming Social Security there are no benefits for a conversion to drag into tax, so it costs only your bracket rate — and every dollar converted is one fewer dollar of RMDs stacked on your benefits later. Within two years of starting Medicare, also check it against the IRMAA (income-related Medicare surcharge) brackets: premiums look back two years.
• Spend from Roth or savings inside the torpedo zone and from the IRA above it.
• Spread one-off income. A large capital gain in one year can make 85% of that year’s benefits taxable.

If we had to pick one move for a charitable retiree over 70½ with an IRA, it’s the QCD — the only giving strategy that reaches back into the Social Security worksheet.

Should I have federal tax withheld from Social Security?

If you will owe tax, yes — or pay quarterly estimated tax instead. Withholding is voluntary: file Form W-4V with Social Security and choose 7%, 10%, 12% or 22% of each payment. No other percentages and no flat dollar amounts are allowed, and nothing is withheld unless you ask.

Those four choices are coarse. Having tax withheld from IRA withdrawals or a pension, where you can pick any amount, is usually more precise. The calculator shows the smallest W-4V rate that covers your estimate.

Does my state tax Social Security too?

Most states don’t tax Social Security at all, and the few that do usually exempt it below an income limit or offer a retiree deduction. This calculator covers federal tax only, so check your own state’s rules separately — they can change which withdrawals are cheapest.

See state taxes on retirement income for every state’s treatment of Social Security, pensions and IRA withdrawals.