There is no federal tax on Social Security benefits when your provisional income stays below $25,000 as a single filer or $32,000 as a married couple filing jointly. Above those lines, a portion of benefits becomes taxable on a sliding scale that caps at 85 percent. The thresholds are set by statute, have not been adjusted since 1983, and a new $6,000 senior deduction available for 2025 through 2028 lowers tax bills for those who owe without changing the thresholds themselves.1Office of the Law Revision Counsel. 26 USC 86 – Social Security and Tier 1 Railroad Retirement Benefits
The Income Thresholds That Decide It
Federal law uses two tiers to determine how much of your benefit is subject to tax. The numbers depend on filing status and apply to your provisional income, not your gross benefit or your paycheck.
For single filers, heads of household, and qualifying surviving spouses:
- Below $25,000: no federal tax on benefits.
- $25,000 to $34,000: up to 50 percent of benefits may be taxable.
- Above $34,000: up to 85 percent of benefits may be taxable.
For married couples filing jointly:
- Below $32,000: no federal tax on benefits.
- $32,000 to $44,000: up to 50 percent of benefits may be taxable.
- Above $44,000: up to 85 percent of benefits may be taxable.
Because these dollar amounts don’t adjust for inflation, each year’s cost-of-living increase moves more retirees across the line.1Office of the Law Revision Counsel. 26 USC 86 – Social Security and Tier 1 Railroad Retirement Benefits
How to Calculate Your Provisional Income
Provisional income, which the IRS also calls combined income, is the yardstick that decides whether any of your benefit gets taxed. Three numbers go into it.
Start with your adjusted gross income, the figure on line 11 of Form 1040. That captures wages, pension payments, traditional IRA and 401(k) withdrawals, investment gains, and most other income.2Internal Revenue Service. Adjusted Gross Income Add any tax-exempt interest, including interest from municipal bonds that never appears on your regular return as taxable. Then add half of your Social Security benefits, taken from box 5 of the SSA-1099 mailed each January.3Internal Revenue Service. Social Security Income
The sum is your provisional income. If Social Security is your only income, provisional income is simply half your benefit. A retiree collecting $22,000 a year with nothing else coming in has a provisional income of $11,000, well under the single-filer threshold. No federal tax, and often no return required.
The tax-exempt interest piece is where retirees get surprised. Municipal bond income stays invisible to the regular income tax, but the Social Security formula adds it back in. A large muni portfolio can push you across a threshold on its own.1Office of the Law Revision Counsel. 26 USC 86 – Social Security and Tier 1 Railroad Retirement Benefits
A Boundary for Married Couples Filing Separately
Married couples who file separate returns and lived together at any point during the year get the harshest rule in the statute. Their base amount is zero, which means up to 85 percent of benefits can be taxed starting from the very first dollar of provisional income. There is no untaxed tier and no 50 percent intermediate step.1Office of the Law Revision Counsel. 26 USC 86 – Social Security and Tier 1 Railroad Retirement Benefits
The one exception: if you and your spouse lived apart for the entire calendar year, you’re treated as a single filer with the $25,000 and $34,000 thresholds. For most couples, filing jointly produces a lower tax bill on benefits than filing separately.
The New $6,000 Senior Deduction
The One Big Beautiful Bill Act, signed as P.L. 119-21, created an additional deduction for taxpayers age 65 and older. For tax years 2025 through 2028, each qualifying individual can claim $6,000. A couple where both spouses are 65 or older can claim $12,000 combined. The deduction is available whether you itemize or take the standard deduction, and it stacks on top of the standard deduction.4Internal Revenue Service. One Big Beautiful Bill Act – Tax Deductions for Working Americans and Seniors
What it does not do is change how much of your Social Security counts as taxable. The provisional income thresholds under 26 U.S.C. § 86 are unchanged. The deduction reduces the taxable income figure after the taxable share of benefits has already been calculated.5Congressional Research Service. Taxation of Social Security Benefits and the Senior Deduction in P.L. 119-21 – In Brief
The deduction phases out at higher incomes. It shrinks by 6 percent of every dollar your modified adjusted gross income exceeds $75,000 for singles or $150,000 for joint filers, disappearing entirely at $175,000 and $250,000. Married taxpayers must file jointly to claim it.4Internal Revenue Service. One Big Beautiful Bill Act – Tax Deductions for Working Americans and Seniors For lower-income retirees who owe only a small amount on their benefits, the deduction can wipe out that remaining federal liability altogether.
Strategies to Keep Benefits Tax-Free
Every strategy runs through the same lever: keep provisional income low enough to stay under the threshold, or at least out of the range where each extra dollar pulls more benefits into the taxable share.
Draw From Roth Accounts First
Qualified distributions from a Roth IRA or Roth 401(k) are not part of adjusted gross income and don’t feed into provisional income. Pulling $30,000 from a traditional IRA adds $30,000 to the formula. The same withdrawal from a Roth adds nothing. For anyone near a threshold, that choice can be the difference between zero tax on benefits and having half of them taxed.
Roth conversions done before you file for Social Security are themselves taxable in the year of the conversion, but they shrink your traditional balance and reduce future mandatory withdrawals. The best window is usually the stretch between retirement and the start of benefits or required minimum distributions, when your taxable income is naturally lower.
Use Qualified Charitable Distributions
If you’re at least 70½ and give to charity anyway, a qualified charitable distribution lets you send up to $111,000 per person in 2026 directly from a traditional IRA to a qualifying charity. The transfer is not counted as taxable income, so it doesn’t raise AGI or provisional income.6Internal Revenue Service. Seniors Can Reduce Their Tax Burden by Donating to Charity Through Their IRA It also satisfies your required minimum distribution for the year, up to the QCD amount.7Congressional Research Service. Qualified Charitable Distributions From Individual Retirement Accounts
Compared with taking a distribution as income and then writing a check to charity, the QCD gets the same money to the same place but keeps your provisional income lower because the withdrawal never lands on your return as income.
Manage Required Minimum Distributions
Starting at age 73, the IRS requires yearly withdrawals from traditional IRAs, 401(k)s, and similar tax-deferred accounts.8Internal Revenue Service. Retirement Topics – Required Minimum Distributions (RMDs) Those distributions are fully taxable and count toward provisional income. The larger your traditional balance, the larger the forced withdrawal.
Converting portions of traditional accounts to Roth before 73 lowers future RMDs. Roth IRAs have no required distributions during the owner’s lifetime, so money moved into a Roth stops generating forced taxable income later. The conversion itself is taxable in the year you do it, so timing matters: do it in years when other income is low enough that the tax cost stays manageable.
Watch Municipal Bond Holdings
Municipal bond interest doesn’t show up as taxable on your regular return, but it does get added back into the provisional income formula. A retiree whose AGI sits safely below the threshold can be pushed over by a large muni portfolio alone. Near a threshold, shifting some assets toward investments that produce unrealized growth rather than yearly interest can keep provisional income in check.
Working While Collecting
Earning wages while receiving benefits creates two separate issues. Wages raise AGI, which can push benefits into taxable territory through the provisional income formula. Separately, the retirement earnings test temporarily reduces benefit payments if you haven’t reached full retirement age.
For 2026, if you’re under full retirement age for the whole year, Social Security withholds $1 in benefits for every $2 you earn above $24,480. In the year you reach full retirement age, the limit rises to $65,160 and the reduction changes to $1 for every $3 above it, counting only earnings before the month you reach full retirement age.9Social Security Administration. Receiving Benefits While Working After full retirement age the earnings test disappears, and Social Security recalculates your benefit to credit back the months where payments were withheld. The withheld benefit is deferred, not lost. The wages you earned, though, still count for the tax calculation.
States That Still Tax Benefits
Federal rules get most of the attention, but eight states also tax Social Security to some degree in 2026: Colorado, Connecticut, Minnesota, Montana, New Mexico, Rhode Island, Utah, and Vermont. West Virginia completed its phase-out in 2026, making benefits fully exempt on returns filed in 2027. Kansas and Nebraska ended their taxes on benefits in 2024.
Each of the remaining states applies its own income limits, exemptions, and age-based exclusions. Because these rules change often, residents should check their state revenue department’s current guidance before filing.
How to Pay What You Owe
Social Security doesn’t withhold taxes from your monthly benefit unless you ask. Retirees who owe tax on their benefits and never arrange withholding can face an underpayment penalty at filing time.
The simplest fix is voluntary withholding. Submit Form W-4V to the Social Security Administration or use your my Social Security account online to choose a flat rate of 7, 10, 12, or 22 percent.10Social Security Administration. Request to Withhold Taxes Custom dollar amounts and other percentages are not available.
If withholding won’t cover your full liability, or if you have significant income from other sources, quarterly estimated payments using Form 1040-ES may be needed. The 2026 quarterly deadlines are April 15, June 15, September 15, and January 15 of the following year.11Internal Revenue Service. Estimated Tax To avoid a penalty, most taxpayers need to pay in at least 100 percent of the prior year’s tax liability through combined withholding and estimated payments. If your AGI exceeds $150,000, the safe harbor rises to 110 percent.