OBBB Calculator Comparison
We tested every OBBB calculator online and found serious errors. Here's why our calculator is the most accurate and complete tool for calculating your 2025 tax savings.
⚠️ Warning: Popular calculators have errors that could cost you thousands
Critical Errors We Found
ottcalculator.com
High ImpactWrong Income Limit
Uses $160,000 income limit instead of correct $150,000. This could cost taxpayers thousands.
TurboTax Blog Calculator
Medium ImpactMissing Phase-outs
Doesn't calculate phase-out reductions for high earners, overstating potential savings.
notaxonovertimecalculators.org
High ImpactIncomplete Deductions
Only covers 2 of 6 OBBB deductions, missing car loans, senior, child credit, and SALT.
Generic Tax Sites
Medium ImpactOutdated Information
Using pre-release estimates instead of final IRS Schedule 1-A requirements.
Feature Comparison
| Feature | Our Calculator | ottcalculator.com | TurboTax Blog | Others |
|---|---|---|---|---|
| Overtime Premium Deduction | ✅ Complete coverage | ✅ Basic coverage | ✅ Basic coverage | ❌ Missing or limited |
| Tips Deduction | ✅ All tip types | ⚠️ Limited coverage | ✅ Good coverage | ❌ Missing |
| Car Loan Interest | ✅ Full eligibility check | ❌ Missing | ⚠️ Basic only | ❌ Missing |
| Senior Deduction ($6K) | ✅ With phase-outs | ❌ Missing | ❌ Missing | ❌ Missing |
| Child Tax Credit Increase | ✅ $200 increase | ❌ Missing | ✅ Included | ❌ Missing |
| SALT Cap Increase ($40K) | ✅ Full calculation | ❌ Missing | ⚠️ Incomplete | ❌ Missing |
| Income Limits | ✅ Correct ($150K) | ❌ Wrong ($160K) | ✅ Correct | ⚠️ Varies |
| Phase-out Calculations | ✅ All phase-outs | ❌ Incomplete | ⚠️ Some missing | ❌ Missing |
| W-2 Box References | ✅ Complete guide | ⚠️ Limited | ❌ Missing | ❌ Missing |
| Filing Status Support | ✅ All statuses | ⚠️ Limited MFJ | ✅ Full support | ⚠️ Varies |
Why We're More Accurate
All 6 Deductions
We're the only calculator that covers all OBBB deductions: overtime, tips, car loans, senior deduction, child tax credit increase, and SALT cap raise.
IRS-Based Calculations
Built directly from Schedule 1-A released March 2, 2026. We use the exact formulas and limits specified by the IRS.
Tested & Verified
We've tested our calculator against known scenarios and compared results with actual Schedule 1-A calculations.
The $160K vs $150K Error
What ottcalculator.com Says
"Income limit: $160,000"
This is wrong and could cost you deductions
IRS Schedule 1-A (Correct)
"Income limit: $150,000"
Official IRS limit from Schedule 1-A
Impact of This Error:
If you earn between $150K-$160K, ottcalculator.com will incorrectly tell you that you qualify for full deductions when you actually face phase-out reductions or complete disqualification.
Get Your Accurate OBBB Calculation
Don't risk using an inaccurate calculator. Our tool covers all 6 deductions with correct income limits and phase-out calculations based on official IRS guidance.
Our Testing Methodology
We tested each calculator using the same scenarios: a nurse earning $85K with 500 OT hours, a server with $30K in tips, and a family with $45K in SALT deductions. We compared results against hand-calculated Schedule 1-A forms and identified discrepancies.