How to Refinance a Car Loan: Step-by-Step

Refinancing a car loan is simpler than most people expect. The full process from first check to funded loan typically takes 3 to 7 business days and requires about an hour of actual effort on your part. Here is exactly what to do at each stage.

Before You Start: Confirm the Math Makes Sense

Before contacting any lender, run the numbers. A refinance that saves $18 a month but costs $400 in fees needs 22 months to break even. If you plan to sell the car in 18 months, it is a bad deal regardless of the rate.

Use the Auto Loan Refinance Calculator with your current balance, APR, remaining term, and an estimated new rate to see your monthly savings, total interest saved, and breakeven month. Only proceed if those numbers make sense for your situation.

Step 1: Get a 10-Day Payoff Quote

Call your current lender and ask for a 10-day payoff quote. This is the exact dollar amount they need to receive within the next 10 days to fully close the loan, including all accrued interest.

Do not use the balance on your statement. That figure does not include interest accrued since the last billing cycle and will be slightly lower than what you actually owe today. Using the wrong number creates a gap that can delay funding.

Most lenders provide the payoff quote over the phone or through their online portal. Some require a written request. Get it in writing regardless.

Step 2: Check Your Credit Score

Pull your score from all three bureaus before approaching any lender. Scores can differ between Equifax, Experian, and TransUnion. If one bureau is showing an error, disputing it before you apply can shift you into a better rate tier.

Free options include your bank’s app, your credit card issuer, or AnnualCreditReport.com. For context on which tier your current score puts you in, see the credit score requirements article in this section.

Step 3: Check Your Vehicle’s Current Value

Look up your car’s current market value on Kelley Blue Book or NADA Guides using the private party value. Lenders use this figure to calculate your loan-to-value ratio. If you owe more than roughly 120% of the vehicle’s current value, most prime lenders will decline the application.

Knowing your LTV before you apply tells you which lenders to approach and sets expectations on what rate tier is realistic.

Step 4: Shop at Least 3 Lenders

This is the step most people skip and it is the most valuable one. Rate differences between lenders for the same borrower profile can be 1 to 2 percentage points. On a $20,000 loan that is hundreds of dollars.

A practical shortlist to start with:

• Your current bank or credit union. If you have an existing relationship, start here. They may offer a loyalty rate and the process is usually faster.
• A local credit union you can join. Credit unions are non-profit and consistently offer lower auto loan rates than banks. Many allow membership based on employer, location, or family connection.
• One online lender. Lenders like Autopay, RefiJet, or LightStream specialize in auto refinancing and can pre-qualify you with a soft credit check in minutes.

Use soft pre-qualification wherever available. This shows you a rate estimate without affecting your credit score. Once you have 2 to 3 estimates, you can compare them and submit a full application only to the best offer.

Step 5: Submit the Full Application

Once you have selected a lender, you will need to provide:

• Government-issued photo ID
• Vehicle registration and current title
• VIN number
• Your 10-day payoff statement from the current lender
• Proof of income (recent pay stubs or tax return)
• Proof of insurance

Most online lenders let you upload these through their portal. The full application typically triggers a hard credit inquiry at this stage.

Step 6: Review the Loan Documents

Before signing, check these four things specifically:

1. The rate matches what you were quoted. Rates can sometimes change between pre-qualification and final offer if your credit report pulled differently than expected.
2. The term length is what you agreed to. Some lenders default to a longer term to make the payment look lower. Verify the term and compare total interest paid, not just the monthly number.
3. There is no prepayment penalty. This should not be present on a new refinance loan, but confirm.
4. All fees are listed and match your estimate. Title transfer fees, origination fees, and any other charges should be disclosed clearly in the closing documents.

Step 7: Let the New Lender Handle Payoff

After you sign, the new lender pays off the old loan directly. You do not handle that money. Once the payoff clears, usually within 3 to 5 business days, your old loan is closed and you begin making payments to the new lender.

Your car does not move. Your ownership does not change. The only thing that changes is who holds the lien on the title. The new lender will file the updated lien with your state’s DMV.

How Long Does the Process Take?

Stage	Typical Timeline
Get payoff quote	Same day to 2 days
Shop and pre-qualify	1 to 3 days
Full application and approval	1 to 3 days
Document signing	Same day
Payoff and title transfer	3 to 7 business days
Total	1 to 2 weeks

Common Mistakes to Avoid

• Using the statement balance instead of a payoff quote. The difference can cause a funding shortfall that delays closing.
• Applying to too many lenders at once. Multiple hard inquiries outside a 14-day window can lower your score more than necessary.
• Focusing only on the monthly payment. A lower payment from a longer term can cost more in total interest. Always compare the total interest figure.
• Not checking for a prepayment penalty on the old loan. Pull out your original contract and confirm there is none before you start the process.

For approval criteria: Before applying, review the Loan Requirements page for the full breakdown of what lenders check on LTV, DTI, vehicle age, and credit score.