Car Refinance Calculator

Determine whether refinancing your car loan makes financial sense. Compare your current auto loan with a new refinanced loan to see potential monthly and total interest savings.

Current Auto Loan
$
Remaining balance on your current loan
%
APR on your current auto loan
Yrs
Mos
Total: 48 months
New Refinanced Loan
%
APR offered by refinancing lender
Yrs
Mos
Total: 48 months
$
Application, title, and other fees
Additional Options

What Is Car Refinancing?

Car refinancing is the process of replacing your existing car loan with a new loan, usually to get a lower interest rate, reduce your monthly payments, or change your repayment period. It can be a useful option if your financial situation has changed or you find a better loan offer from another lender.

When you refinance a car loan, the new lender pays off the remaining balance of your existing loan. You then start making payments on the new loan according to its interest rate, repayment term, and monthly payment amount. Your car remains the same; only the loan terms change.

For example, if you still owe $15,000 on your car loan but find a lender offering a lower interest rate, you may be able to refinance the remaining balance. This could help you save on interest or make your monthly payments more affordable, depending on the new loan terms.

It is also important to understand the difference between car loan refinancing and loan modification. Refinancing replaces your existing loan with a completely new loan, while a loan modification changes certain terms of your current loan without replacing it.

Before refinancing, compare the new interest rate, loan term, fees, and total repayment amount to make sure the new loan actually benefits you.

How to Use our Car Refinance Calculator

Using a Car Refinance Calculator is easy. You just need to enter a few details about your existing auto loan and the new loan offered by a refinancing lender. The calculator compares both loans to help you understand how refinancing could affect your monthly payments, total interest, and overall costs.

Follow these steps to use the calculator:

  1. Current Loan Balance: Enter the remaining balance on your existing car loan. This is the amount you still owe to your current lender.
  2. Current Interest Rate: Enter the APR (Annual Percentage Rate) you are currently paying on your auto loan.
  3. Remaining Term: Enter the time left to repay your existing loan. You can specify the remaining duration in years and months.
  4. New Interest Rate: Enter the APR offered by the new lender for refinancing your car loan.
  5. New Loan Term: Enter the repayment period of the refinanced loan in years and months. You can choose a different term based on the repayment options available from the lender.
  6. Refinance Fees: Enter any additional costs associated with refinancing, such as application fees, title fees, or other lender charges.

Additional Options

The calculator also provides two optional features to help you understand the results in more detail:

  • Show Calculation Breakdown: Enable this option to view the formulas and step-by-step calculations used to estimate your new loan payment, interest costs, and potential savings.
  • Show Amortization Comparison: Enable this option to compare the payment schedules of your existing loan and refinanced loan. It helps you see how much of each payment goes toward principal and interest over time.

Once you enter all the required details, the auto refinance calculator compares your current loan with the proposed refinanced loan. It estimates your new monthly payment, total interest, refinancing costs, and potential savings.

You can use these results to determine whether refinancing is a good option for your financial situation. A car loan refinance calculator also makes it easier to see how a different interest rate or repayment term could affect the overall cost of your car loan.

How to Calculate a Car Refinance Rate?

A car refinance rate is the new interest rate offered by a lender when you replace your existing auto loan with a new loan. Refinancing may help you reduce your monthly payment, lower your interest costs, or adjust your repayment period.

To calculate whether refinancing is worthwhile, you need to compare your current loan with the proposed refinanced loan. The lender generally considers factors such as your credit score, outstanding loan balance, vehicle age, income, repayment history, and new loan term before offering a car refinancing interest rate.

You should also consider the Annual Percentage Rate (APR), which may include certain loan fees in addition to interest. This helps you understand the overall borrowing cost rather than comparing interest rates alone.

Formula for Calculating Car Loan Refinance Payments

You can calculate the monthly payment for both your existing and refinanced auto loans using the following formula:

EMI = P × R × (1 + r)n ÷ (1 + r)n − 1

Where:

  • P = Outstanding loan balance or new loan amount.
  • r = Monthly interest rate (Annual interest rate ÷ 12 ÷ 100).
  • n = Remaining or new loan term in months.

You can also calculate the total interest using:

Total Interest= (EMI × n) − P

For the refinanced loan, the refinance fees should also be considered when calculating the overall cost.

Example of Car Refinance Rate Calculation

Suppose you have an existing auto loan with a remaining balance of $20,000 and want to refinance it at a lower interest rate. Your current loan and proposed refinancing details are:

Current Auto Loan

  • Outstanding Loan Balance: $20,000
  • Current Interest Rate: 7.50%
  • Remaining Loan Term: 48 months

New Refinanced Loan

  • New Interest Rate: 5.50%
  • New Loan Term: 48 months
  • Refinance Fees: $0

Let's calculate the monthly payments and total interest for both loans.

Step 1: Calculate the Current Monthly Payment

Using the existing interest rate of 7.50%:

r = 7.50 ÷ 12 × 100 = 0.00625

EMI = 20000 × 0.00625 × (1.00625)48 ÷ (1.00625)48 − 1

EMI = $483.58

The total remaining interest is:

Total Interest= (483.58 × 48) − 20000

Total Interest= $3,211.75

Step 2: Calculate the New Refinanced Monthly Payment

The new lender offers an interest rate of 5.50% for 48 months.

r = 5.50 ÷ 12 × 100 = 0.0045833

EMI = 20000 × 0.0045833 × (1.0045833)48 ÷ (1.0045833)48 − 1

EMI = $465.13

The total interest on the refinanced loan is:

Total Interest= (465.13 × 48) − 20000

Total Interest= $2,326.22

Step 3: Calculate Your Potential Savings

Now compare the existing loan with the new refinanced loan.

Comparison Amount
Current Monthly Payment $483.58
New Monthly Payment $465.13
Monthly Payment Savings $18.45
Current Total Interest $3,211.75
New Total Interest $2,326.22
Total Interest Savings $885.53

In this example, refinancing at 5.50% reduces your monthly payment by approximately $18.45 and saves around $885.53 in total interest over 48 months, assuming no refinancing fees.

A car refinance calculator makes this comparison easier by calculating your existing monthly payment, new monthly payment, total interest, and potential savings. You can also include refinancing fees to understand whether the new loan actually offers a financial benefit.

Important: If refinancing fees are added to the new loan balance, they will also affect your monthly payment and total interest. Always compare the total cost of both loans before making a decision.

Frequently Asked Questions (FAQs)

Yes, refinancing a car loan can be worth it if you qualify for a lower interest rate, reduce your monthly payments, or save money on total interest. However, consider any refinancing fees and the total cost of the new loan before making a decision.

Yes, refinancing can lower your monthly payment if you get a lower interest rate or extend your loan term. However, choosing a longer repayment period may increase the total interest you pay over the life of the loan.

Yes, some lenders allow you to refinance your existing car loan with them. However, not all lenders offer this option. Contact your current lender to check whether they can provide better interest rates or loan terms.

Yes, refinancing may still be possible if your outstanding loan balance is higher than your car's current market value. However, some lenders may reject the application or require you to pay the difference before approving the new loan. This situation is commonly known as negative equity.