Schedule 1-A Calculator: Estimate Your OBBBA Tax Deductions

See how much you can deduct on the new IRS Schedule 1-A (Form 1040). Enter your details for each qualifying section — tips, overtime, car loans, or seniors — and get an instant estimate of your total deduction and federal tax savings.

New to Schedule 1-A? Read the full Schedule 1-A guide to understand the rules before you calculate.

Part II

No Tax on Tips Deduction

For workers in qualifying tipped occupations with total income under $150,000 (single) or $300,000 (married filing jointly). Deduction capped at $25,000.

Total tips from W-2 Box 7 + any unreported cash tips
Your base wages from W-2 Box 1, minus the tip amount
Enter your annual tip income to calculate Part II.

What Goes on Each Part of Schedule 1-A

Schedule 1-A is the new IRS form (2025 tax year) that consolidates all four OBBBA above-the-line deductions onto a single attachment. You only complete the parts that apply to your situation.

Part I
No Tax on Seniors

Additional deduction for taxpayers 65+. Income limit: $75K single / $150K joint.

Part II
No Tax on Tips

Up to $25,000 in qualified tip income. Income limit: $150K single / $300K joint.

Part III
No Tax on Overtime

FLSA-covered overtime pay. Income limit: $150K single / $300K joint.

Part IV
No Tax on Car Loans

Up to $10,000 in interest on domestic auto loans. No income limit.

Who Qualifies for Schedule 1-A?

  • Seniors (Part I): Age 65 or older with total income under $75,000 (single) or $150,000 (married filing jointly).
  • Tipped workers (Part II): Employees in occupations that customarily receive tips — servers, bartenders, hair stylists, casino dealers, delivery drivers, and 60+ other jobs. Total income must be under $150,000/$300,000.
  • Overtime workers (Part III): Non-exempt hourly employees covered by the Fair Labor Standards Act. Total income must be under $150,000/$300,000.
  • Auto loan holders (Part IV): Anyone paying interest on a loan for a domestically assembled personal vehicle. No income limit applies to Part IV.

You can claim multiple parts on the same Schedule 1-A if you qualify for more than one deduction.

Frequently Asked Questions

Does Schedule 1-A replace Schedule 1?

No. Schedule 1-A is a separate attachment. You still file Schedule 1 (Form 1040) as normal. The total from Schedule 1-A flows into Schedule 1, Part II as an additional adjustment to income.

Do I need Schedule 1-A if I only have car loan interest?

Yes. If you want to claim the Part IV car loan interest deduction, you must file Schedule 1-A and complete Part IV, even if Parts I, II, and III are all blank.

Will FICA taxes go down because of Schedule 1-A?

No. Schedule 1-A reduces your federal income tax only. Social Security and Medicare taxes still apply to all wages, tips, and overtime income at the same rate. Your Social Security benefits record is unaffected.

Related Calculators

Need more detail on a specific deduction? Use these dedicated tools: