Two-Car Household Loan Interest Deduction Calculator
For families paying two auto loans at once.
The short answer: At the combined numbers below, the deduction is $6,800 — $816 back at 12% ($31 per paycheck).
New, US-assembled vehicle only
Modified Adjusted Gross Income
Car Loan Interest Deduction
$6,800
✅ You qualify for the full deduction
⚠️ This calculator provides estimates for informational and educational purposes only. It is not tax advice. Results are based on the One Big Beautiful Bill Act (OBBBA) and IRS Schedule 1-A. Consult a qualified tax professional for your specific situation.
Two Loans, One Cap
Households with two auto loans stack interest fast — $6,000–$8,000 a year combined is common — but the $10,000 cap is per return, not per car.
- • Car 1 interest + Car 2 interest → one deduction, cap $10,000
- • Phase-out uses household MAGI
- • MFJ or single, the cap doesn't double for two cars
Worked Example
MFJ household, $3,400 + $3,400 of interest on two loans.
- • Combined deduction $6,800; savings $816 at 12%
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Frequently Asked Questions
Can we deduct interest on two car loans?
Yes — both loans' interest combines into one deduction capped at $10,000 per return.
Is the cap per vehicle?
No — $10,000 total per tax return, however many qualified vehicle loans you hold.