Car Refinance Calculator

This car refinance calculator shows if refinancing your auto loan saves money. Enter current and new rates to see monthly savings and break-even instantly.

Car Refinance Calculator | Auto Loan Refinance Savings
Select Currency
Current Auto Loan
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months
/mo
Refinance Options
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months

Refinancing your car loan can save money if the new rate is at least 1% lower. Break-even point is when monthly savings cover refinance fees.

Refinance Analysis
💰 Monthly Savings: —
Current Monthly Payment—
New Monthly Payment—
Monthly Savings—
Refinance Fees—
Break-Even Point—
Total Interest (Current)—
Total Interest (New)—
Interest Savings Over Life—
Net Savings (Interest - Fees)—
Current vs. Refinanced Loan Comparison
MonthCurrent BalanceNew BalanceCumulative SavingsStatus

Enter loan details to view comparison schedule.

Shows month-by-month remaining balance comparison between current and refinanced loans.

Powered by Techraxy | Car Refinance Calculator

Creator & Reviewer

Hasnain Khan

Co-Founder, Techraxy

Hasnain Khan is a digital tools developer and Co-Founder of Techraxy, a platform dedicated to building modern web-based calculators and utility tools. He focuses on tool optimization, website performance, and creating accessible user experiences across categories like automotive, finance, construction, and everyday utilities.

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Introduction to Car Refinance Calculator

Refinancing your car loan replaces your existing auto loan with a new one, typically to secure a lower interest rate, reduce monthly payments, or change your loan term. Many borrowers refinance after improving their credit score, when market rates drop, or when they want to lower their monthly payment. However, refinancing comes with fees and may extend your loan term. This Car Refinance Calculator helps you determine whether refinancing makes financial sense. Enter your current loan balance, current rate, remaining term, new rate, new term, and any refinance fees. The calculator shows your new monthly payment, total interest saved, and break-even point. Toolraxy built this calculator to help car owners make informed refinancing decisions and avoid costly mistakes.

How to Use This Car Refinance Calculator

              1. Enter your Current Loan Balance (what you still owe)

              2. Enter your Current Interest Rate (rate on existing loan)

              3. Enter your Remaining Loan Term (months left on current loan)

              4. Enter the New Interest Rate (rate offered for refinance)

              5. Enter the New Loan Term (months for new loan)

              6. Enter any Refinance Fees (application, title transfer, etc.)

              7. Click Calculate to see your refinance comparison

              8. Review monthly savings, interest saved, and break-even point

Formula Section

Current monthly payment:

Current Payment = Current Balance × [ r1(1+r1)^n1 ] / [ (1+r1)^n1 – 1 ]

New monthly payment:

New Payment = Current Balance × [ r2(1+r2)^n2 ] / [ (1+r2)^n2 – 1 ]

Monthly savings:

Monthly Savings = Current Payment – New Payment

Total interest remaining (current loan):

Current Total Interest = (Current Payment × n1) – Current Balance

Total interest on new loan:

New Total Interest = (New Payment × n2) – Current Balance

Total interest saved:

Interest Saved = Current Total Interest – New Total Interest

Break-even point (months):

Break-Even = Refinance Fees ÷ Monthly Savings

Total cost of refinancing:

Total Cost = New Total Interest + Refinance Fees

Where:

  • r1 = Current monthly interest rate (current rate ÷ 12 ÷ 100)

  • n1 = Remaining months on current loan

  • r2 = New monthly interest rate (new rate ÷ 12 ÷ 100)

  • n2 = New loan term in months

  • Refinance Fees = Application, title, and processing fees

Real-Life Examples Section

  • Example scenario:

    • Current loan balance: $20,000

    • Current interest rate: 9.0%

    • Remaining term: 48 months

    • New interest rate: 6.0%

    • New loan term: 48 months

    • Refinance fees: $250

    Results:

    • Current monthly payment: $498

    • New monthly payment: $470

    • Monthly savings: $28

    • Current total interest: $3,904

    • New total interest: $2,560

    • Interest saved: $1,344

    • Break-even point: $250 ÷ $28 = 9 months

    • Total cost of refinancing: $2,810

FAQs

1. What is car refinancing?
Car refinancing replaces your existing auto loan with a new one. You pay off the old loan and start a new loan, typically with a lower interest rate or different term. It can reduce your monthly payment or save interest.

2. When should I refinance my car loan?
Consider refinancing when interest rates drop, your credit score improves, or you want a lower monthly payment. Refinancing is usually worthwhile if you can recover fees within a few months and plan to keep the car.

3. How much can I save by refinancing my car?
Savings depend on your current rate, new rate, balance, and term. A 2-3% rate reduction on a $20,000 loan can save $1,000-$2,000 in total interest. Use this calculator for your exact numbers.

4. What is a good break-even point for car refinancing?
A break-even point of 6-12 months is generally good. If break-even takes longer than 24 months, refinancing may not be worthwhile unless you plan to keep the car long-term.

5. Does refinancing a car hurt my credit score?
Refinancing may cause a small temporary dip in your credit score due to a hard inquiry. However, if you keep up with payments, your score typically recovers and may improve over time.

6. Can I refinance a car with bad credit?
Yes, but rates will be higher. Improving your credit score before refinancing can help you qualify for better rates. Some lenders specialize in refinancing for borrowers with lower credit scores.

7. What fees are associated with car refinancing?
Common fees include application fees, title transfer fees, and processing fees. Some lenders charge no fees. Total fees typically range from $0 to $500. This calculator includes a fee input.

8. Does refinancing a car extend the loan term?
Refinancing can extend, shorten, or keep your term the same, depending on your new loan. A longer term lowers your monthly payment but increases total interest. A shorter term does the opposite.

Disclaimer

This Car Refinance Calculator is provided for educational and planning purposes only. Results are based on standard amortization formulas and the numbers you enter. Actual refinance rates, terms, and fees vary by lender, credit score, vehicle age, and mileage. This tool does not constitute financial or lending advice. Consult a licensed auto lender or financial advisor before making refinancing decisions. Toolraxy is not responsible for any actions taken based on these calculations.

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