The One Big Beautiful Bill Act created a brand-new deduction for taxpayers age 65 and older. Claimed on Schedule 1-A, it reduces taxable income by up to $6,000 per qualifying person for tax years 2025 through 2028. This is separate from the long-standing additional standard deduction for seniors and is available to both standard deduction filers and itemizers.
Who Qualifies for the Senior Deduction?
You qualify if you are age 65 or older on December 31 of the tax year. For 2025 returns, that means a birth date on or before December 31, 1960. You also need a valid Social Security number and cannot be claimed as a dependent on another taxpayer's return.
The deduction is $6,000 per qualifying person. On a joint return, each spouse is evaluated separately: if only one is 65 or older, the deduction is $6,000. If both qualify, it is $12,000.
Unlike the pre-existing additional standard deduction for seniors (which applies only to standard deduction filers), the new OBBBA senior bonus is available whether you itemize or take the standard deduction.
How Does the Phase-Out Work?
The deduction phases out at 6% for every dollar of MAGI above the applicable threshold.
| Filing Status | Phase-Out Begins | Fully Phased Out |
|---|---|---|
| Single or Head of Household | $75,000 | $175,000 |
| Married Filing Jointly | $150,000 | $250,000 |
| Married Filing Separately | $75,000 | $175,000 |
Example: A single filer age 70 with $110,000 MAGI starts with a $6,000 maximum. The excess above $75,000 is $35,000, and 6% of $35,000 equals $2,100. The allowable deduction is $3,900.
The phase-out is gradual, not a cliff. Every $1,000 of MAGI over the threshold reduces the deduction by exactly $60. That means even taxpayers above the starting threshold can still claim a meaningful partial deduction.
How It Stacks With Other Deductions
For a standard deduction filer who is single and 65 or older in 2025, the full deduction picture looks like this:
- Standard deduction (2025): $15,350
- Additional standard deduction (pre-existing, age 65+): $2,000
- OBBBA senior bonus (full amount): $6,000
- Total: $23,350 of deduction from taxable income
Itemizers replace the standard deduction with Schedule A totals and then add the $6,000 senior bonus on top. The deduction flows through Schedule 1-A to Form 1040 Line 13b.
What the Deduction Does Not Do
This is a below-the-line deduction. It reduces taxable income but not AGI. That means it does not:
- Lower Medicare IRMAA surcharges (which are AGI-based, looking back two years)
- Reduce the portion of Social Security benefits subject to income tax
- Improve eligibility for AGI-sensitive credits or other deduction phase-outs
If reducing AGI is the priority, above-the-line moves like traditional IRA contributions, HSA contributions, or Qualified Charitable Distributions work better.
Strategies to Maximize the Deduction
Trim MAGI to Protect the Full $6,000
Each $1,000 of MAGI above the threshold costs $60 of deduction (6% rate). If you are within $20,000 of the starting threshold, contributing to a traditional IRA, a health savings account, or a deferred compensation plan can reduce MAGI enough to preserve thousands in deductions. Timing larger IRA withdrawals in lower-income years can also keep MAGI in check.
Coordinate Roth Conversions With the Phase-Out
Roth conversions increase MAGI and can partially or fully erode the senior bonus. A $50,000 conversion for a single filer already at $70,000 MAGI pushes MAGI to $120,000, losing 6% of the $45,000 overage, or $2,700 of deduction. Factor that cost into conversion modeling before converting. Qualified Charitable Distributions (which do not count toward MAGI) can be a better tool for seniors with charitable goals.
Verify Both Spouse Ages for the Full $12,000
The $6,000 deduction is per qualifying person, not per return. A spouse who turns 65 on or before December 31 of the tax year counts for the full year. A spouse who turns 65 on January 1 does not qualify until the following year. For 2025 returns, the cutoff is a birth date on or before December 31, 1960. A couple with only one qualifying spouse receives $6,000, not $12,000.
Bottom Line
The OBBBA senior bonus is one of the more substantial new deductions from the 2025 legislation, worth up to $6,000 per qualifying senior and up to $12,000 for qualifying couples. The gradual 6% phase-out means partial deductions remain available well above the starting thresholds. Both standard deduction filers and itemizers can benefit, making this relevant to nearly all taxpayers 65 and older.
For help calculating your senior deduction or working it into a broader retirement tax strategy, contact TS CPA.