Yes, you can use a personal loan to pay off a car loan. No federal law restricts how you spend unsecured loan proceeds, and lenders don’t ask you to justify the use. The real question is whether you should. The swap converts a secured debt, where your car is collateral, into an unsecured one that typically carries a higher interest rate, and it can cost you a new federal tax deduction on car loan interest. In a narrow set of situations the trade pays off. In most, it doesn’t.
What Actually Changes When You Swap the Loans
Your current auto lender holds a lien on the vehicle, a legal claim that lets them repossess the car if you stop paying. Pay off that loan with personal loan funds and the lien is released. No lender has a claim on the car anymore.
The personal loan replaces that structure with one based on your creditworthiness alone. If you default, the lender can’t take your car. They can, however, send the debt to collections, sue you for the balance, and pursue wage garnishment. The obligation doesn’t disappear. It changes form.
When the Swap Actually Saves Money
Unsecured personal loans almost always carry higher rates than secured auto loans because the lender takes on more risk without collateral. As of early 2026, the average personal loan rate sits at roughly 12% for a borrower with a 700 credit score. New-car loan rates for prime borrowers average around 6.5%, and used-car loans average near 9.7%. Switching only saves money when your personal loan rate comes in below your current auto loan rate. That’s realistic mainly if your credit has improved significantly since you originally financed, or if you took out a high-rate dealer loan.
Origination fees change the picture too. Many personal lenders charge a one-time fee of 1% to 10% of the loan amount, though some charge nothing. On a $15,000 loan, a 3% origination fee adds $450 to your cost before the first payment.
Term length matters as much as rate. Personal loan terms typically run two to seven years. If your remaining auto loan term is longer than what a personal lender offers, your monthly payment could rise even at a lower rate. Run the numbers on total interest over the full life of each loan, not just the monthly payment, to see whether the swap really saves money.
The clearest situations where this strategy helps:
- Your credit score has risen enough to qualify for a rate below your existing auto loan.
- You owe more than the car is worth and want to sell it, but the lien blocks a clean title transfer.
- You want to fold the auto loan into other debts under a single monthly payment.
- You financed through a buy-here-pay-here dealer at a rate any reasonable personal loan would beat.
The Car Loan Interest Deduction You May Lose
For tax years 2025 through 2028, a federal provision lets you deduct up to $10,000 per year in interest paid on a qualifying car loan.1Office of the Law Revision Counsel. 26 U.S. Code 163 – Interest The deduction applies only if all of the following are true:
- You are the first owner of the vehicle (original use starts with you).
- The loan was taken out after December 31, 2024.
- The lender holds a first lien on the vehicle.
- Your modified adjusted gross income is below $150,000 (single) or $300,000 (joint). The deduction shrinks by $200 for every $1,000 your income exceeds $100,000 ($200,000 joint).
The “secured by a first lien” requirement is the piece that matters here. An unsecured personal loan doesn’t meet that test, so refinancing into one eliminates the deduction entirely.1Office of the Law Revision Counsel. 26 U.S. Code 163 – Interest Refinancing into another secured auto loan instead preserves the deduction, but only up to the outstanding balance of the original loan at the time of refinancing.2Internal Revenue Service. Treasury, IRS Provide Guidance on the New Deduction for Car Loan Interest You must also include the vehicle identification number on your tax return to claim the deduction.
If your current car loan qualifies, losing this deduction could easily offset any rate savings a personal loan brings. Compare the after-tax cost of both options before deciding.
Check Your Auto Loan for a Prepayment Penalty
Some auto loan contracts charge a fee for paying off the balance ahead of schedule.3Consumer Financial Protection Bureau. Can I Prepay My Loan at Any Time Without Penalty? Federal truth-in-lending rules require the lender to disclose that penalty clearly before you sign, so the information should be in your original loan paperwork.4Consumer Financial Protection Bureau. 12 CFR 1026.18 – Content of Disclosures If you can’t find the documents, call your lender and ask directly. Some states prohibit prepayment penalties on auto loans entirely.
A prepayment penalty doesn’t automatically kill the idea. It changes the math. Add the penalty to the total cost of switching, then compare against your projected savings.
How to Execute the Payoff
Getting Your Payoff Quote
Contact your auto lender and request a payoff quote. This is the exact amount needed to close the loan by a specific date, including interest that accrues daily between the quote date and your payment date. Most lenders provide it through their online portal, by phone, or by written request.
The payoff amount runs slightly higher than your current balance because interest keeps accruing until payment arrives. Quotes typically expire after 10 to 30 days, so plan your timing.
When you get the quote, confirm three things: the payoff amount and expiration date, the payment address or wire instructions (payoff payments often go to a different department than regular monthly payments), and the account number to reference on any check or transfer.
Sending the Funds
Once the personal loan funds hit your account, send the full payoff amount before the quote expires. Common methods include a one-time payment through the lender’s online portal (usually fastest), an ACH bank transfer, or a certified check sent by trackable mail with the account number on the memo line and a copy of the payoff quote enclosed.
Save the confirmation number for electronic payments. For mailed checks, retain the tracking receipt. Any leftover personal loan proceeds are yours to keep. If your payment slightly exceeds the final balance because interest stopped accruing sooner than projected, the auto lender will refund the difference, typically within about ten business days.
Lien Release and Title
Once the balance reaches zero, the lender must release the lien. Under the Uniform Commercial Code, a secured party must file a termination statement within 20 days of receiving a written demand after the debt is satisfied, though many lenders initiate the release automatically.5Legal Information Institute. UCC 9-513 – Termination Statement
How quickly you get a clean title depends on your state. Many states use electronic lien and title systems, where the lender releases the lien electronically to the motor vehicle agency and processing takes days rather than weeks. In paper-title states, the lender mails you the physical title with the lien marked as released, or sends a separate release document you bring to the motor vehicle agency. State fees for a new clean title typically run $15 to $75. If nothing arrives within 30 days, contact the lender’s title department with your payoff confirmation and the date the final payment posted.
Insurance and Credit Aftermath
While the car had a lienholder, your loan agreement almost certainly required comprehensive and collision coverage. Once the lien is released, that contractual requirement disappears, and you can drop those coverages to lower your premium. Weigh the car’s current value against the annual cost of coverage before doing so. If the car has depreciated to where the coverage costs nearly as much as any potential payout, dropping it may be reasonable. Either way, contact your insurer to remove the lienholder from the policy once the clean title is in hand.
The credit impact of the swap plays out in a few ways. Applying for the personal loan adds a hard inquiry that may lower your score by about five points, an effect that fades within a year. If the auto loan was your only installment loan, closing it shifts your credit mix, and the new personal loan (also installment) only partially offsets that. If the auto loan was one of your older accounts, closing it can shorten your average account age, and the new loan pulls the average down further in the short term.
None of these effects are permanent. Consistent on-time payments on the personal loan rebuild any lost ground. The bigger risk is default. Because the new loan is unsecured, a default won’t cost you the car, but it will damage your credit and can lead to collections or a lawsuit for the balance.