Free Auto Refinance Calculator
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Reviewed by Calculator Editorial Team
Refinancing your auto loan can help you save money by taking advantage of lower interest rates or better loan terms. Our free auto refinance calculator estimates your potential savings by comparing your current loan with a new refinanced loan.
How Auto Refinancing Works
Auto refinancing is the process of replacing your current auto loan with a new one that offers better terms. This typically involves paying off your existing loan and taking out a new loan with a lower interest rate or different repayment terms.
Refinancing is different from a car loan renewal. With refinancing, you're essentially getting a new loan to replace your old one, while a renewal typically extends your existing loan terms.
Benefits of Auto Refinancing
- Lower monthly payments
- Reduced interest costs over the life of the loan
- Potential for shorter loan terms
- Access to better loan features
Types of Auto Refinancing
There are several ways to refinance your auto loan:
- Rate-and-term refinance: Extends the loan term to lower monthly payments
- Cash-out refinance: Takes out more money than the car is worth to pay off other debts
- Debt consolidation refinance: Combines multiple loans into one
When to Refinance Your Auto Loan
Refinancing your auto loan can be a smart financial move under certain circumstances. Consider refinancing when:
- Your current interest rate is significantly higher than available rates
- You have good credit and can qualify for better terms
- You plan to keep your car for more than 3-5 years
- You want to pay off your loan faster
- You need to access equity in your car
Break-even point formula:
To determine when refinancing makes sense, calculate the break-even point where the savings from refinancing equal the cost of refinancing.
Break-even point (months) = Refinancing fee / (Monthly savings × 12)
When Not to Refinance
You may want to avoid refinancing if:
- You have a short-term need for the car
- You have poor credit
- The refinancing fees exceed potential savings
- You're not planning to keep the car long-term
How to Calculate Auto Refinance Savings
Calculating your potential auto refinance savings involves comparing your current loan with a new loan scenario. The key factors to consider are:
- Current loan balance
- Current interest rate
- Current loan term
- New interest rate
- New loan term
- Refinancing fees
Monthly payment formula:
P = L[c(1 + c)^n]/[(1 + c)^n - 1]
Where:
- P = Monthly payment
- L = Loan amount
- c = Monthly interest rate (annual rate / 12)
- n = Number of payments (loan term in months)
Key Metrics to Compare
When evaluating refinancing options, compare these key metrics:
| Metric | Current Loan | Refinanced Loan |
|---|---|---|
| Monthly payment | $X | $Y |
| Total interest paid | $A | $B |
| Net savings | $C | $D |
Example Calculation
Let's look at an example to illustrate how the auto refinance calculator works.
Example Scenario:
- Current loan balance: $25,000
- Current interest rate: 7.5% APR
- Current loan term: 60 months
- New interest rate: 4.5% APR
- New loan term: 72 months
- Refinancing fee: $500
Current Loan Details
- Monthly payment: $480.65
- Total interest: $1,743.80
- Total cost: $26,743.80
Refinanced Loan Details
- Monthly payment: $416.67
- Total interest: $1,200.00
- Total cost: $26,200.00
- Net savings: $543.80 (after $500 refinancing fee)
In this example, refinancing saves you $543.80 over the life of the loan, assuming you keep the car for the full 72 months.