Anyone who is 65 or older by December 31 can subtract an extra $6,000 from taxable income for tax years 2025 through 2028, and a married couple who both qualify gets $12,000. This senior deduction comes on top of the age 65 add-on already built into the standard deduction. It shrinks by 6 cents for every dollar of modified adjusted gross income above $75,000, or above $150,000 on a joint return, which means it’s gone at $175,000 for a single filer and $250,000 for a couple. The first returns to carry it are 2025 returns, filed in 2026.
The deduction came from Public Law 119-21, the 2025 law most people still call the One Big Beautiful Bill Act. The IRS files it under section 70103 on its Working Families Tax Cuts page and calls it the enhanced deduction for seniors.
Who qualifies for the senior deduction?
Age is measured at the end of the year. The IRS says you must reach 65 on or before the last day of the tax year, and Publication 554, the Tax Guide for Seniors, adds that if your 65th birthday falls on January 1, you’re treated as 65 at the end of the year before. So for 2025 the test is a birth date before January 2, 1961. For 2026 it moves to January 2, 1962.
You also need a Social Security number that is valid for employment and was issued by the Social Security Administration before the due date of your return, extensions included. An individual taxpayer identification number is a different thing and won’t work. Married people have to file a joint return. Married filing separately gets no senior deduction at any income.
Each spouse is tested on their own. A 66-year-old married to a 62-year-old gets one $6,000 deduction on their joint return.
$6,000 per person, then 6% off above $75,000
Part V of Schedule 1-A (Form 1040) handles the phaseout in seven lines. Line 31 is your MAGI, which for most retirees is the adjusted gross income on line 11b of Form 1040. It only gets bigger if you excluded income from Puerto Rico or claimed the foreign earned income exclusion. Subtract $75,000, or $150,000 if you file jointly. Multiply whatever is left by 6% and take that from $6,000. The result goes on line 36a for you and again on line 36b for a spouse who qualifies, and line 37 adds them.
Because the same reduction comes off each spouse’s $6,000, a couple who both qualify lose 12 cents of deduction for every dollar of MAGI over $150,000. At $200,000 they’re down to $3,000 each. At $250,000 there’s nothing left. A single filer runs out at $175,000, since $100,000 over the line times 6% is exactly $6,000.
Retirement income piles into MAGI quickly. AGI already includes the taxable part of your Social Security benefits, along with IRA and 401(k) withdrawals, pension payments, interest, dividends and capital gains. A big required minimum distribution, a Roth conversion or the sale of a rental house in the same year can push a couple from $140,000 to $190,000 and cut their deduction from $12,000 to $7,200.
Does it stack with the extra standard deduction for 65 and older?
Yes. The new $6,000 is separate from the additional standard deduction that people 65 and older have been getting under existing law. For 2025, Publication 554 sets that add-on at $1,600 per person for married filers and $2,000 for single or head of household filers. It sits on top of the basic standard deduction, which is $31,500 for a joint return and $15,750 for a single filer in 2025. When a senator asked the IRS about a constituent’s Social Security taxes, the agency’s reply (information letter 2025-0006) said the new deduction comes on top of the senior amount that is added to the standard deduction.
Itemizers get it too. Line 38 of Schedule 1-A carries the total to line 13b of Form 1040 or 1040-SR, a separate line from the one where you take the standard deduction or your itemized total. The older age 65 add-on works differently, because it only exists inside the standard deduction, so an itemizer gives that piece up.
Worked example for a married couple, both 67
A couple, both 67 during 2025, have pension income, IRA withdrawals and Social Security that leave them with $172,000 of adjusted gross income on line 11b. They have no foreign income, so their MAGI is also $172,000. They take the standard deduction and file jointly.
$172,000 minus $150,000 is $22,000. Six percent of $22,000 is $1,320. Each spouse’s $6,000 drops to $4,680, and the two together come to $9,360. With MAGI of $150,000 or less they’d have had the full $12,000, so the phaseout cost them $2,640 of deduction.
Add the pieces and they subtract $31,500 of basic standard deduction, $3,200 of age add-on ($1,600 each) and the $9,360 senior deduction, a total of $44,060. Taxable income lands at $172,000 minus $44,060, or $127,940. If their top bracket is 22%, the senior deduction by itself saves them about $2,059 in federal income tax ($9,360 times 0.22).
Now run the same couple through 2026 with the same income. The senior piece doesn’t move, because the IRS lists the same $6,000 and the same $75,000 and $150,000 thresholds for every year from 2025 through 2028, with no inflation adjustment. The rest of the stack grows a little. Revenue Procedure 2025-32 raises the age add-on for 2026 to $1,650 per person, or $2,050 for an unmarried filer, and the IRS puts the 2026 basic standard deduction at $32,200 for joint filers and $16,100 for single filers. Their 2026 total would be $32,200 plus $3,300 plus $9,360, or $44,860.
Is this no tax on Social Security?
No. The 2025 law left the rules for taxing benefits where they were. The IRS Social Security income FAQ still uses the same test: add half of your benefits to all of your other income, tax-exempt interest included, and compare the total with $25,000 for a single filer or $32,000 for a joint return. Go over that and part of your benefits becomes taxable. The IRS letter mentioned above says up to 85% of benefits can be taxed once a couple’s income passes $44,000, or $34,000 for a single person.
What the senior deduction does is lower taxable income after your benefits have already been counted in AGI. For a retiree with modest income, an extra $6,000 or $12,000 can bring taxable income to zero, so no federal income tax is owed on anything, benefits included. Anyone under 65 collecting disability or early retirement benefits gets nothing from it. If you’re 65 and still working, Social Security and Medicare tax keep coming out of your paycheck as before.
State tax is its own question. The same IRS letter notes that the deduction has no effect on whether benefits are taxable at the state level.
Easy ways to lose it on a 2025 return
Filing separately ends it outright. On a separate return the senior deduction is zero, whatever the income. The SSN rule shuts out a spouse who files with an ITIN or whose number was issued after the return’s due date. The January 1 rule works in your favor and is easy to overlook. Someone born on January 1, 1961 counts as 65 for 2025, even though a quick look at the birth year says they turned 64.
The deduction is also temporary. Under the current law, 2028 is the last tax year it covers, so the 2028 return filed in 2029 is the final one unless Congress extends it.
What to do before you file
- Check both spouses’ birth dates against January 2, 1961 for the 2025 return, or January 2, 1962 for the 2026 return.
- Make sure each person claiming it has a Social Security number valid for employment printed on the return.
- Estimate your MAGI from last year’s line 11b. If a couple is near $150,000, or a single filer near $75,000, look at whether a large IRA withdrawal or sale can wait until January.
- Fill out Part V of Schedule 1-A and attach it to Form 1040 or 1040-SR. In tax software, confirm that line 13b of the 1040 isn’t blank.
- If you planned to file separately, run a joint return too and compare the two totals.
Related reading
- Social Security COLA for 2027 Is 3.6%, or $72 More on a $2,000 Check
- Who Qualifies for No Tax on Tips, and How Much Is It Worth?
- Capital Gains Tax on Stocks for 2026, With the Math Worked Out
The senior deduction amounts and thresholds above come from IRS forms and publications for tax years 2025 and 2026, and the IRS can still revise its Schedule 1-A instructions. Check the current instructions on irs.gov, or ask a licensed tax preparer, before you count on the $6,000 for your own return.
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