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Auto Loan Refinance Calculator

Calculate if refinancing your car loan actually saves you money, or if a lower monthly payment is just a trap to pay more total interest.

Math Engine Online
Current Loan Reality
$
%
Refinance Offer
Enter the proposed terms from the new bank.
%
Refinance Analysis
Monthly Payment Difference
-$141.56

New Pmt: $474.65

Remaining Interest (Current)$4,577.96
Total Interest (New Loan)$3,478.98
Total Interest Savings$1,099
✅ Good Refinance

You are mathematically saving money. You pay less per month and less in interest over the life of the loan.

Refinance Caveats

This calculator shows purely mathematical outcomes. It does not account for fees, prepayment penalties, or changes to insurance/taxes. Confirm full offer terms before refinancing.

Methodology

Compares present payment schedule PV using standard amortization formula. Monthly and total interest computed from annuity formula.

Frequently Asked Questions

When does it make sense to refinance?

Refinance if new rate is 0.5-1% lower OR if you can shorten loan term without increasing monthly payment. Factor in refinance fees (typically $200-500).

How much can refinancing save?

On a $30,000 loan at 6% (60 months) → 4% (48 months), you save $1,500+ in interest. Use this calculator to compare scenarios.

Does refinancing hurt my credit?

Hard inquiries slightly drop credit score (3-5 points), but typically recover within 3-6 months. Long-term benefits usually outweigh temporary dips.

Disclaimer & Legal Notice

All tools and calculators provided by Lapsite are for informational and educational purposes only. While we strive for mathematical precision, these results are approximations and should not be used as the sole basis for critical engineering, financial, or safety decisions. Lapsite Ltd and its creators provide no warranty, express or implied, regarding the accuracy or fitness of these calculations for any specific use.Always double-check calculations independently, especially for safety-critical components such as brakes, suspension, or structural changes. By using these tools, you agree that Lapsite Ltd is not liable for any mechanical failure, financial loss, or injury resulting from the use of this data.

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