IRS Releases Schedule 1-A: How to Claim Your OBBB Deductions
The IRS has officially released Schedule 1-A for claiming OBBB deductions. Here's everything you need to know about the new form and filing requirements.
Breaking: Schedule 1-A is Here
After months of anticipation, the IRS has released Schedule 1-A (Additional Adjustments to Income), the official form for claiming deductions under the One Big Beautiful Bill Act. The form is now available on IRS.gov and will be supported by major tax software providers starting March 15, 2026.
🎉 Key Announcement
Form 1040 filers can now officially claim OBBB deductions using Schedule 1-A. The form covers all six OBBB deduction types and includes built-in phase-out calculations.
What's on Schedule 1-A
Schedule 1-A is surprisingly straightforward for such complex legislation. Here's the structure:
Schedule 1-A Line Items
- Line 1: Qualified overtime premium pay deduction
- Line 2: Qualified tip income deduction
- Line 3: Auto loan interest deduction (US-manufactured vehicles)
- Line 4: Enhanced senior standard deduction
- Line 5: Additional SALT deduction (over $10,000 cap)
- Line 6: Total OBBB adjustments (transfers to Schedule 1, Line 8l)
Note: Child Tax Credit increase is handled automatically on Form 1040 and doesn't appear on Schedule 1-A.
Step-by-Step Filing Instructions
Step 1: Gather Your Documents
- All W-2s (look for "OBBBTT" and "OBBBT" codes in Box 12)
- Form 1098 for auto loan interest (if provided)
- Records of state and local taxes paid
- Birth certificates or SSA records for age verification (if 65+)
Step 2: Complete Your Lines
Fill out each applicable line on Schedule 1-A:
Line 1: Enter overtime premium from W-2 Box 12 code "OBBBTT"
Line 2: Enter tip income from W-2 Box 12 code "OBBBT"
Line 3: Enter auto loan interest (after verifying US-manufactured status)
Line 4: Enter $6,000 per qualifying person if 65+ by December 31, 2025
Line 5: Enter excess SALT over $10,000 (if MAGI < $500,000)
Step 3: Apply Phase-outs (if applicable)
The form includes a built-in worksheet for income phase-outs. If your MAGI exceeds the thresholds, the worksheet automatically calculates reduced deductions.
Step 4: Transfer to Schedule 1
Line 6 total transfers to Schedule 1 (Additional Income and Adjustments), Line 8l. From there, it flows to Form 1040, Line 8.
Common Mistakes to Avoid
❌ Don't Make These Errors
- Including regular wages: Only premium overtime pay qualifies for Line 1
- Forgetting phase-outs: High earners must use the income reduction worksheet
- Wrong car eligibility: Must be US-manufactured and under $100K MSRP
- Mixing up codes: OBBBTT = overtime, OBBBT = tips (different codes!)
- Double-counting SALT: Only the amount over $10,000 goes on Line 5
Software Support Timeline
Major tax software providers are rolling out Schedule 1-A support on different schedules:
Full OBBB support
Full OBBB support
Basic OBBB support
What Comes Next
With Schedule 1-A now available, taxpayers can begin claiming OBBB deductions immediately. The IRS expects to process the first OBBB refunds by March 15, 2026. We'll continue monitoring software updates and provide detailed reviews as they roll out.
💡 Pro Tip: Don't wait for your software to update if you're comfortable with forms. You can file Schedule 1-A manually and get your refund weeks earlier than software-dependent filers.
Calculate Your OBBB Savings
Ready to see how much you can save with the new Schedule 1-A deductions? Our calculator walks you through each line item and estimates your refund.
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