Senior Deduction

The deduction was added to section 151 of the tax code by the One Big Beautiful Bill Act, signed July 4, 2025. Each qualifying individual is worth $6,000: you, if you are 65 by the last day of the tax year, and your spouse on a joint return if they are too. A couple where both qualify can deduct up to $12,000.

You claim it in Part V of Schedule 1-A, the new schedule for the OBBBA deductions, and it is subtracted after adjusted gross income is figured, alongside the standard deduction or your itemized deductions. So it lowers taxable income but not AGI, and nothing tested against AGI moves. It is also a deduction, not a tax credit: it can take taxable income down to zero, but any unused part is lost, and it never produces a refund on its own.

Three conditions can shut it off. The qualifying person’s valid Social Security number must be on the return. A married couple must file jointly; spouses who file separately get nothing. And it does not exist for tax years after 2028 unless Congress extends it.

Each $6,000 is reduced by 6% of modified adjusted gross income above $75,000, or $150,000 on a joint return. For this rule MAGI is AGI plus any excluded foreign earned income or income from Puerto Rico and U.S. territories, so for most retirees it is simply AGI. The thresholds are flat amounts in the law, not adjusted for inflation.

The reduction applies to each person’s $6,000 separately. A single filer loses all of it at $175,000 of MAGI. On a joint return where both spouses qualify, each $6,000 shrinks by 6% of the excess over $150,000, so the couple loses 12 cents of deduction per extra dollar and the benefit is gone at $250,000. If only one spouse is 65, that single $6,000 also runs out at $250,000.

Inside the band the deduction acts like a hidden surtax. Each extra $1,000 of income removes $60 of deduction for one qualifying person, or $120 for two. A couple who both qualify therefore pay an effective 24.64% on the next dollar in the 22% bracket, and 26.88% in the 24% bracket, until the deduction is used up. That higher marginal tax rate is worth knowing before you add income in these years.

Filers who are 65 or older, or blind, already had a larger standard deduction under section 63(f): for 2026, an extra $2,050 if unmarried, or $1,650 for each qualifying spouse if married. The senior deduction is a separate benefit that stacks on top, and the two follow different rules.

The age-65 addition is permanent, indexed for inflation, not income-tested, and only available if you take the standard deduction. The senior deduction is temporary, a flat $6,000, income-tested, and available to itemizers as well. A married person who files separately keeps the $1,650 addition but loses the senior deduction entirely, one more cost of married filing separately for older couples. The table shows what the three pieces add up to for 2026 when income is below the phase-out.

No, although it was widely described that way. The rules that decide how much of a Social Security benefit is taxable did not change, and the deduction applies only after taxable benefits have been counted. A single retiree aged 67 with $30,000 of benefits and $40,000 of IRA withdrawals still has $22,350 of those benefits in income in 2026, exactly as before; the deduction then saves her $720 at the 12% rate.

What it does is lower the tax on everything in taxable income, benefits included, which is why many retirees with modest income now owe little or nothing. Because it sits below AGI, other tests stay where they were.

Because it lasts four years, the deduction widens a temporary window for low-taxed income. A single filer 65 or older who takes the standard deduction has $24,150 of deductions in 2026, so AGI made up of ordinary income can reach $74,550 before any of it is taxed above 12%, just under the $75,000 point where the phase-out begins. For a couple who are both 65 or older, the equivalent figure is $148,300, again just under their $150,000 threshold.

Those ceilings are natural stopping points for Roth conversions or extra IRA withdrawals while the deduction lasts. Filling them now can shrink pre-tax balances and later required minimum distributions, which will meet $6,000 or $12,000 less deduction from 2029 if the law is not extended. Going past them has a cost: the phase-out adds 6 or 12 cents of taxable income per dollar, and income that counts in AGI can also raise Medicare premiums two years later. Test the whole sequence of years rather than one year at a time.