About This Calculator
This is an independent, free tool for estimating your potential tax savings under the One Big Beautiful Bill Act (OBBBA). It is not affiliated with or endorsed by the IRS, any government agency, or any tax preparation company.
All calculations are performed in your browser — your numbers never leave your device. No signup, no data collection, no cookies beyond standard analytics.
Calculation Sources
Our calculations are based on:
- IRS Schedule 1-A instructions (tax year 2025)
- 2025–2026 federal tax brackets
- OBBBA statutory text (Public Law 119-21)
Calculation Transparency
The formula for each deduction:
Overtime Premium
hourly_rate × 0.5 × ot_hours, capped at $12,500/$25,000, phase-out $150K–$275K (single) / $300K–$550K (MFJ)
Tips
min(tip_income, $25,000), same phase-out as overtime
Car Loan Interest
min(interest_paid, $10,000), phase-out $100K–$150K (single) / $200K–$250K (MFJ)
Senior Bonus
If age ≥ 65: $6,000, phase-out $75K–$150K (single) / $150K–$300K (MFJ)
Tax Savings
deduction_amount × marginal_tax_rate (from 2025 federal brackets)
Limitations
- Federal income tax only — state taxes not included
- FICA (Social Security & Medicare) not included
- Does not account for itemized deductions, AMT, or other tax situations
- Estimates are for informational purposes — not tax advice
For decisions affecting your actual tax return, consult a qualified tax professional. Find a tax professional at IRS.gov.