2026 IRS Schedule 1A Deductions Instructions – The 2026 tax filing season (for 2025 tax returns) introduces a brand-new IRS form: Schedule 1-A (Additional Deductions). Created under the One Big Beautiful Bill, this two-page schedule lets eligible U.S. taxpayers claim four powerful new deductions that reduce taxable income—whether you take the standard deduction or itemize on Schedule A.
These deductions cover no tax on tips, no tax on overtime, no tax on car loan interest, and an enhanced senior deduction. Below is the official, step-by-step guidance based directly on the 2025 IRS Schedule 1-A form and Form 1040 instructions.
What Is IRS Schedule 1-A?
Schedule 1-A (Form 1040) is a new attachment to your Form 1040, 1040-SR, or 1040-NR. It calculates and claims four temporary deductions available only for tax years 2025 through 2028.
Unlike traditional adjustments on Schedule 1 (which affect AGI), these are additional deductions that directly lower your taxable income after your standard deduction or itemized deductions. You can claim them even if you don’t itemize.
The form has six parts:
- Part I: Modified Adjusted Gross Income (MAGI) for phaseout calculations
- Part II: No Tax on Tips
- Part III: No Tax on Overtime
- Part IV: No Tax on Car Loan Interest
- Part V: Enhanced Deduction for Seniors
- Part VI: Total Additional Deductions (flows to Form 1040)
Who Needs to File Schedule 1-A in 2026?
File Schedule 1-A if you (or your spouse on a joint return) qualify for any of these four deductions. You must have a valid Social Security Number (SSN) issued before the return due date (including extensions). Married taxpayers must file jointly to claim spouse-related amounts.
No minimum income is required, but high earners face phaseouts based on MAGI.
The Four New Deductions on Schedule 1-A
No Tax on Tips Deduction (Up to $25,000)
Qualified tips from tipped occupations (e.g., servers, bartenders—full list at IRS.gov/TippedOccupations) are deductible up to $25,000 per return.
Key rules:
- Tips must be reported on W-2 Box 7, Form 4137, or 1099s.
- Self-employed tips limited to net profit per business.
- Valid SSN required.
- Phaseout starts at MAGI over $150,000 ($300,000 if married filing jointly).
No Tax on Overtime Deduction (Up to $12,500 / $25,000 Joint)
Qualified overtime pay under the Fair Labor Standards Act (FLSA) is deductible up to $12,500 for single filers or $25,000 for married filing jointly.
Key rules:
- Must be FLSA-eligible (non-exempt) employee overtime at time-and-a-half.
- Reported on W-2 or 1099-NEC/MISC.
- Valid SSN required; joint return for spouses.
- Phaseout at MAGI over $150,000 ($300,000 joint).
No Tax on Car Loan Interest Deduction (Up to $10,000)
Interest paid on a loan for a qualified passenger vehicle purchased in 2025 for personal use (more than 50% personal) is deductible up to $10,000.
Key rules:
- Vehicle must be a passenger auto (car, SUV, pickup, motorcycle, etc., under 14,000 lbs GVWR), with final assembly in the U.S.
- Loan originated after Dec. 31, 2024; first-lien secured.
- You must list the VIN on the form (up to two vehicles).
- Phaseout starts at MAGI over $100,000 ($200,000 joint).
Enhanced Deduction for Seniors (Up to $6,000 / $12,000 Joint)
Taxpayers born before January 2, 1961 (generally age 65 or older during 2025) get an extra $6,000 deduction ($12,000 if both spouses qualify).
Key rules:
- Valid SSN required.
- Joint return required for spouses.
- Phaseout at MAGI over $75,000 ($150,000 joint).
Step-by-Step Instructions: How to Fill Out Schedule 1-A?
- Complete Part I – MAGI
Start with Form 1040 line 11b (AGI). Add back certain exclusions (foreign earned income, Puerto Rico income, etc.) to get MAGI. This determines phaseouts. - Part II – Tips
Enter qualified tips from W-2, 4137, and 1099s. Use worksheets for multiple employers or businesses. Apply the $25,000 cap, then reduce by phaseout ($100 reduction per $1,000 over threshold). - Part III – Overtime
Enter qualified overtime from W-2/1099s. Cap at $12,500/$25,000, then apply phaseout. - Part IV – Car Loan Interest
List VIN(s) and qualified interest paid. Cap at $10,000, then apply phaseout (note: phaseout uses rounding up). - Part V – Seniors
Enter $6,000 (or $12,000 joint) and apply phaseout. - Part VI – Total
Add all four deductions. Enter the total on your Form 1040 (it reduces taxable income).
Pro tip: Tax software like TurboTax or Free File automatically populates Schedule 1-A if you enter the supporting data (W-2s, 1099s, VINs, age).
How Schedule 1-A Affects Your 2025 Tax Return?
The total from Schedule 1-A flows directly to Form 1040 and lowers your taxable income dollar-for-dollar. It does not affect AGI-based credits or deductions (e.g., EITC, student loan interest) in the same way above-the-line adjustments do.
Example: A single server with $20,000 qualified tips, $10,000 overtime, $8,000 car loan interest, and qualifying as a senior could reduce taxable income by up to $53,000 (before phaseouts).
Common Mistakes to Avoid with Schedule 1-A
- Forgetting to list the VIN for car loan interest.
- Claiming tips or overtime without proper documentation (W-2 Box 7 or 1099s).
- Filing separately when married (disqualifies spouse benefits).
- Missing phaseout calculations—use the exact MAGI from Part I.
- Claiming non-qualified tips (mandatory service charges generally don’t qualify).
Frequently Asked Questions About 2026 IRS Schedule 1A
Is Schedule 1-A only for itemizers?
No—available with standard deduction or Schedule A.
Do I need to attach supporting documents?
Keep records (pay stubs, loan statements, VIN docs), but don’t attach unless requested.
Are these deductions permanent?
No—available only for tax years 2025–2028.
Where do I get the official form?
Download the 2025 Schedule 1-A and Form 1040 instructions directly from IRS.gov.
Maximize Your 2026 Tax Savings with Schedule 1-A
The new Schedule 1-A delivers real relief for tipped workers, hourly employees working overtime, new car buyers, and seniors. By following these official IRS instructions, you can confidently claim every dollar you’re entitled to on your 2025 return.
For the latest updates, always refer to the official IRS documents:
Consult a tax professional or use IRS Free File if your situation is complex. Filing accurately with Schedule 1-A could mean hundreds or thousands in extra refunds this 2026 tax season.