Calculate the Schedule 1-A deductions introduced under OBBBA (One Big Beautiful Bill Act). Estimate tips, overtime, auto loan interest, and senior deductions in one place.
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OBBBA stands for the One Big Beautiful Bill Act. It introduced Schedule 1-A deductions for tax year 2025 to help working Americans lower their taxable income.
Schedule 1-A includes four deduction categories: tips income, overtime premium pay, auto loan interest on US-assembled vehicles, and an additional deduction for seniors receiving Social Security.
If you have heard about OBBBA in the news, this calculator is the tool to estimate those Schedule 1-A deductions accurately and quickly.
Select the Schedule 1-A deductions that apply to you
Enter your income, tips, overtime hours, and loan details
Verify eligibility dates and limits under OBBBA rules
Review the line-by-line Schedule 1-A calculation trace
Export a summary for your records or tax preparer
Built-in validation for dates, caps, and qualifying criteria across all four deductions.
See exactly how your deduction is computed on each Schedule 1-A line.
Use one calculator for tips, overtime, auto loan interest, and senior deductions.
OBBBA stands for the One Big Beautiful Bill Act. It introduced the Schedule 1-A deductions for tax year 2025, including tips, overtime, auto loan interest, and senior deductions.
Schedule 1-A is the IRS form section created under OBBBA. If you are searching for OBBBA deductions, you are looking for the Schedule 1-A deductions.
OBBBA includes four Schedule 1-A deductions: Tips (up to $25,000), Overtime (no cap), Auto Loan Interest (up to $10,000), and Seniors (additional $4,000 for qualifying taxpayers).
No. The Schedule 1-A deductions are above-the-line deductions, so you can claim them even if you take the standard deduction.
This calculator provides estimates based on the information you enter. It is designed to help you understand potential deductions but does not constitute tax advice.
All calculations must be independently verified before filing. The preparer of record bears full responsibility for the accuracy of any filed return. We assume no liability for errors or omissions.Read full disclaimer →
Our free calculator helps you estimate your Schedule 1-A deduction with a complete audit trail.