In most states, you have to be at least 18 years old to finance a car in your own name. That’s the age at which you can sign a binding contract, which is what a car loan is. Three states set the bar higher: 19 in Alabama and Nebraska, and 21 in Maryland.1Interstate Commission for Juveniles. Age Matrix Reaching the required age is the legal floor, not a guarantee of approval — young buyers still have to clear credit, income, and insurance hurdles that trip up plenty of applications.
Why the Age Threshold Exists
A car loan is a multi-year contract, and both sides need the legal capacity to be bound by it. Minors don’t have that capacity. A contract signed by someone under the age of majority is voidable at the minor’s choice, meaning the young borrower could walk away from the deal and the lender would have no way to enforce it.2SSA – POMS. Validity of Loans to Minors (RTN 371) That’s why lenders won’t write a loan for someone below the threshold. The risk isn’t missed payments; it’s that the entire agreement could be undone.
If You Haven’t Reached the Age of Majority Yet
Adding a Co-Signer
The usual workaround is a co-signer, typically a parent or close relative. The co-signer signs the loan alongside you and takes on full legal responsibility for repayment. This is not a formality. The lender can collect from the co-signer without first trying to collect from you.3Federal Trade Commission. Cosigning a Loan FAQs Any missed or late payments show up on the co-signer’s credit report and can damage their score as much as yours. The loan also counts against their debt-to-income ratio, which affects their own borrowing capacity. If the loan defaults, the lender can repossess the vehicle and, depending on state law, sue both of you for the remaining balance, along with late fees and collection costs.4Consumer Financial Protection Bureau. Should I Agree to Co-sign Someone Else’s Car Loan?
The arrangement doesn’t have to last the full term. Some lenders offer a co-signer release after 12 to 24 months of on-time payments, usually with a fresh credit check and proof of income. If your lender doesn’t offer that option, refinancing the loan in your name alone is the alternative, though you’ll generally need a credit score of at least 600 and a steady payment history to qualify.
Emancipation
An emancipated minor is someone under the age of majority who has been granted adult legal status by a court. Once the court signs the order, the minor generally gains the legal capacity to enter contracts, auto loans included. When you apply, bring a court-certified copy of the emancipation decree so the lender can confirm the contract can’t later be voided on the basis of age. Some states still restrict the types of contracts emancipated minors can enter, so emancipation doesn’t automatically guarantee approval.5Cornell Law School LII / Legal Information Institute. Emancipated Minor
Why Turning 18 Isn’t Enough on Its Own
Legal capacity gets you to the application. It doesn’t get you approved. Most 18-year-olds have little or no credit history, which lenders read as high risk. Without a track record of borrowing and repaying, you’ll likely land in subprime territory if you’re approved at all.
The cost difference is real. As of the third quarter of 2025, the average interest rate on a new car loan was about 6.56 percent. Borrowers with credit scores between 501 and 600 paid an average of 13.34 percent on new cars and 19.00 percent on used cars. Scores below 500 pushed rates above 15 percent for new vehicles and above 21 percent for used ones. On a $20,000 loan over five years, the gap between 6.5 percent and 19 percent works out to roughly $7,500 in extra interest.
Building Credit Before You Apply
Starting a credit file before you turn 18 is one of the most effective moves. Many credit card issuers let minors be added as authorized users on a parent’s account, with minimum ages as low as 13 depending on the issuer. The account’s payment history reports on the authorized user’s credit file, so you can arrive at 18 with several years of positive history behind you.
If you’re already 18 and starting from zero, a secured credit card or a small credit-builder loan can establish your file. Plan on at least six months of activity before you’ll have a score a lender can evaluate.
Putting More Money Down
A larger down payment is one of the simplest ways to improve your odds with a thin credit file. It reduces the amount you need to borrow, which lowers the lender’s risk, and it can help you qualify for a lower rate and better terms. There’s no universal minimum, but the less you need to finance, the more willing a lender will be to work with limited credit history.
Insurance Comes With the Loan
Lenders require you to carry comprehensive and collision insurance for the life of the loan. These coverages protect the lender’s investment if the car is damaged, stolen, or totaled. If you let the required coverage lapse, the lender can buy a policy on your behalf and add the cost to your payments, and that force-placed coverage is typically much more expensive than what you’d buy yourself.
This matters more for young borrowers because insurance is significantly costlier under 25. An 18-year-old pays roughly 70 percent more for car insurance than a driver in their early 30s. When you’re budgeting, add the full-coverage insurance premium to the monthly loan payment. The insurance alone can push the total beyond what a young buyer planned for.
Age Discrimination Protections and Their Limits
Once you’ve reached the age of majority, the Equal Credit Opportunity Act protects you from being denied credit solely because of your age.6Office of the Law Revision Counsel. 15 USC 1691 – Scope of Prohibition A lender can’t reject you just because you’re 18 or 22.
The law does allow lenders to consider factors that correlate with age. In a credit scoring system, age can be used as a predictive variable as long as it doesn’t penalize elderly applicants. In a judgmental evaluation, a lender can weigh the length of your credit history, the stability of your income, or how long you’ve held your current job.7eCFR. 12 CFR Part 1002 – Equal Credit Opportunity Act (Regulation B) In practice, a lender can’t turn you away for being young, but it can decline your application because your credit file is too thin or your income history is too short.
What to Bring When You Apply
Whether you apply at a dealership, a bank, or a credit union, expect to provide:
- A government-issued photo ID such as a driver’s license or passport
- Your Social Security number, so the lender can pull your credit report
- Proof of income, such as recent pay stubs, bank statements, or tax returns
- Proof of residence, such as a utility bill, lease, or bank statement
- Proof of insurance, or evidence you can obtain the required comprehensive and collision coverage
- Your down payment, whether cash, check, or a trade-in vehicle
If you’re an emancipated minor, bring a certified copy of your emancipation decree. If you’re using a co-signer, that person needs to bring their own ID, income verification, and Social Security number. The lender will evaluate both credit profiles and your combined ability to repay before deciding.