The best time to refinance is when interest rates drop or your credit score improves
Car refinancing means taking out a new loan to pay off your existing car loan. You keep the same car, but you replace the original loan with a new one—usually at a lower interest rate or with different terms. The main reason people refinance is to lower their monthly payment or reduce the total interest they pay over the life of the loan.
The timing matters because refinancing only makes financial sense when the new loan costs you less than continuing with the old one. That happens in a few specific situations: when interest rates in the market have fallen since you took out your original loan, when your credit score has improved enough to may have access to for better rates, or when you want to shorten the loan term and can afford a higher monthly payment.
Key Takeaways
- Refinancing saves money when market interest rates have dropped since you got your original loan, or when your credit score has improved enough to may have access to for a lower rate.
- You should have paid off at least 20 percent of the original loan before refinancing, because cars lose value quickly and you could end up owing more than the car is worth.
- The refinancing process takes one to two weeks, and you will need your current loan documents, proof of income, and proof of insurance to start.
- Refinancing costs money upfront—typically $200 to $500 in fees—so you need to calculate whether the monthly savings will cover that cost before the loan ends.
When interest rates have fallen since you got your loan
Interest rates change constantly based on what the Federal Reserve does and what banks decide to charge. If rates have dropped since you took out your car loan, a new lender might offer you a lower rate on a refinance. The difference between your current rate and the new rate is what determines whether refinancing is worth it.
For example, if you have a $20,000 loan at 8 percent interest with four years left to pay, and current rates are 5 percent, refinancing could save you hundreds of dollars. But if rates have only dropped from 6 percent to 5.5 percent, the savings might be small enough that the refinancing fees eat up most of the benefit.
You can check current car loan rates through banks, credit unions, and online lenders without affecting your credit score—these are called soft inquiries. Compare the rate you would get to your current rate, then use a loan calculator to see how much you would actually save over the remaining life of the loan.
When your credit score has improved
Your credit score is one of the biggest factors lenders use to decide what interest rate to offer you. If your score was lower when you got your original car loan, you may have paid a higher rate than you would may have access to for today. Even if market rates have not changed, an improved credit score can get you a better rate from a new lender.
Credit scores improve when you pay bills on time, pay down other debts, and fix errors on your credit report. If you have been making your car payments on time and have paid down credit cards or other loans, your score may have risen enough to matter. Check your credit score for free through AnnualCreditReport.com or through your bank or credit card company—most offer free monitoring now.
A 50-point improvement in your credit score might lower your interest rate by 0.5 to 1 percent, depending on the lender and the current market. That is enough to make refinancing worthwhile, but you should still calculate the actual savings before you commit.
When you want to shorten the loan term
Some people refinance not to lower their monthly payment, but to pay off the car faster. If you originally took out a six-year loan but now have the income to handle a four-year loan, you can refinance into the shorter term. Your monthly payment will go up, but you will pay less total interest and own the car outright sooner.
This strategy makes sense if your financial situation has improved—you got a raise, paid off other debts, or your household income increased. Shortening the loan term also protects you against being underwater on the loan (owing more than the car is worth), because you build equity faster.
When you should not refinance
Do not refinance if you still owe more than the car is worth. Cars lose value quickly, especially in the first few years. If you owe $15,000 on a car that is worth $12,000, refinancing does not solve that problem—you are just spreading the loss over a longer period. Most lenders will not refinance a car where you are underwater anyway, but some will, and taking that deal usually costs you money.
Avoid refinancing if you are close to paying off the loan. If you have only 12 months left on your current loan, the interest you would pay on a new loan will likely exceed any savings from a lower rate. The refinancing fees also become a larger percentage of your remaining balance.
Do not refinance multiple times in a short period. Each refinance involves a hard inquiry on your credit report, which temporarily lowers your score. Multiple inquiries in a few months can signal to lenders that you are desperate for credit, which can actually raise the rates they offer you.
How to calculate whether refinancing makes sense
The math is straightforward: add up the fees you will pay to refinance, then calculate how much you will save each month with the new rate. Divide the fees by the monthly savings to find your break-even point—the number of months it will take for the savings to cover the costs.
If you plan to keep the car longer than your break-even point, refinancing makes sense. If you think you might sell or trade in the car before you reach that point, it probably does not.
| Scenario | Current Loan | Refinance Offer | Monthly Savings | Refinance Fees | Break-Even (months) |
|---|---|---|---|---|---|
| Rate drop | $350/month at 7% | $320/month at 4.5% | $30 | $300 | 10 months |
| Credit improvement | $400/month at 8% | $375/month at 5.5% | $25 | $250 | 10 months |
| Shorter term | $300/month for 48 months | $380/month for 36 months | N/A (payment increases) | $300 | Depends on goals |
What happens when you refinance
The process starts with getting pre-may have access to offers from lenders. You provide basic information about your car, your current loan, and your income. Lenders will pull your credit report (a hard inquiry) and give you a rate quote. This usually takes a few minutes online or over the phone.
Once you choose a lender and formally explore, they will order a vehicle inspection or valuation to confirm the car is worth what you say it is. You will need to provide your current loan documents, proof of income (recent pay stubs or tax returns), and proof of insurance. The new lender will contact your current lender to find out the exact payoff amount.
When everything is approved, the new lender pays off your old loan and sends you new loan documents to sign. The whole process typically takes one to two weeks. Your car title may be held by your current lender until the old loan is paid off—the new lender will handle getting it transferred.
Frequently Asked Questions
How much will refinancing cost me?
Refinancing fees typically range from $200 to $500, depending on the lender and your state. Some lenders charge an origination fee (usually 1 to 2 percent of the loan amount), while others charge a flat fee. Ask for the total cost in writing before you commit, and factor it into your break-even calculation.
Will refinancing hurt my credit score?
Yes, but only temporarily. The hard inquiry lowers your score by a few points, and closing your old loan removes an active account from your credit history. The impact usually fades within a few months, especially if you make on-time payments on the new loan. The long-term benefit of a lower interest rate usually outweighs the short-term score dip.
Can I refinance a car I still owe money on?
Yes, that is the most common reason people refinance. As long as the car is worth at least as much as you owe, most lenders will refinance the remaining balance. If you owe more than the car is worth, some lenders will still refinance, but they will charge you a higher rate to cover the extra risk.
What if my current lender will not let me refinance?
Your current lender cannot prevent you from refinancing with a different lender. When you refinance, the new lender pays off your old loan in full, and you are no longer obligated to your original lender. The only restriction is that the car must be worth enough to cover what you owe.
How long do I have to wait after getting my original loan to refinance?
There is no official waiting period, but most lenders prefer that you have made at least a few payments on your original loan—usually three to six months. This shows you are a reliable borrower and gives the lender time to see your payment history. Some lenders will refinance sooner, but you may face higher rates or fees.