To finance a car in your own name, you generally have to be at least 18 years old, which is the age of majority in most states. Alabama and Nebraska set it at 19, and Maryland at 21. Reaching that age is only the first requirement — lenders also need to see that you can realistically repay the loan, and most 18-year-olds run into trouble on that second test.
Why 18 Is the Cutoff
A car loan is a contract, and contracts only bind people who have the legal capacity to enter them. A minor doesn’t. Any agreement signed by someone under the age of majority is voidable at the minor’s choice, so the lender has no reliable way to enforce repayment.1SSA – POMS. Validity of Loans to Minors (RTN 371) That’s why lenders won’t finance a vehicle for someone below the state’s threshold, no matter how strong their income or savings look.
The threshold is 18 in most of the country. The exceptions:
- Alabama: 19
- Nebraska: 19
- Maryland: 21
If you live in one of those three states, you need to hit the state’s age, not 18, before a lender will approve financing in your name alone.2Interstate Commission for Juveniles. Age Matrix
If You’re Under the Age of Majority
There are two paths for buyers who haven’t reached the required age.
Adding a Co-Signer
The common workaround is bringing on an adult co-signer, usually a parent or close relative. The co-signer signs the loan alongside you and takes on full legal responsibility for repayment. This isn’t a formality. The lender can collect from the co-signer without first going after you, and any missed or late payments hit the co-signer’s credit report just as hard as yours.3Federal Trade Commission. Cosigning a Loan FAQs4Consumer Financial Protection Bureau. Should I Agree to Co-sign Someone Else’s Car Loan? The loan also counts against the co-signer’s debt-to-income ratio, and if the loan defaults, the lender can repossess the car and sue both of you for any remaining balance, late fees, and collection costs.
Some lenders will release a co-signer after 12 to 24 months of on-time payments and a fresh credit check on the primary borrower. If your lender doesn’t offer that, refinancing the loan into your name alone is the usual alternative once your credit will support it — generally a score around 600 with a steady payment history.
Emancipation
A minor who has been declared emancipated by a court gains adult legal status, which generally includes the capacity to sign contracts.5Cornell Law School LII / Legal Information Institute. Emancipated Minor To use it when applying for a loan, you’ll need to give the lender a court-certified copy of the emancipation decree. Some states still restrict the types of contracts an emancipated minor can enter, so this isn’t a guaranteed approval, but it does remove the age-based objection.
Why Turning 18 Often Isn’t Enough
Reaching the legal age doesn’t mean a lender will approve you. 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 gap is severe. 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 on new vehicles and above 21 percent on used ones. On a $20,000 loan over five years, the difference between 6.5 percent and 19 percent adds up to roughly $7,500 in extra interest.
Building Credit Before You Apply
The most effective preparation is starting a credit history before you turn 18. Many credit card issuers let a parent add a child as an authorized user, with minimum ages as low as 13 at some issuers. The account’s payment history reports on the authorized user’s credit file, so by the time you’re ready to finance a car, you could have 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 will open a file. Plan on at least six months before you’ll have a score a lender can evaluate.
A Larger Down Payment
Putting more money down cuts the amount you need to borrow, which cuts the lender’s risk. It can also earn a lower rate and better terms. There’s no universal minimum, but the thinner your credit file, the more a down payment does to move a marginal application into approval.
Insurance Will Cost More Than You Expect
Lenders require comprehensive and collision insurance for the full life of the loan, so the vehicle is covered if it’s damaged, stolen, or totaled. If you let the required coverage lapse, the lender can buy a policy on your behalf and bill you for it, and that force-placed coverage is typically far more expensive than a policy you’d buy yourself.
This lands hard on young buyers. Auto insurance is significantly more expensive for drivers under 25, and an 18-year-old pays roughly 70 percent more than a driver in their early 30s. When you’re budgeting, add the full-coverage premium to the monthly loan payment before deciding what you can afford. The insurance alone can push the total past what a young buyer planned for.
What Age-Based Denials Are and Aren’t Allowed
Once you’ve reached the age of majority, the Equal Credit Opportunity Act bars a lender from denying you 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 for being 18 or 22.
The law does let lenders weigh factors that correlate with age. In a credit scoring model, age can be a predictive variable as long as it doesn’t penalize elderly applicants. In a judgmental review, a lender can consider things like the length of your credit history, the stability of your income, and how long you’ve held your job.7eCFR. 12 CFR Part 1002 – Equal Credit Opportunity Act (Regulation B) So a lender can’t turn you away for being young, but it can decline you for a thin credit file or a short income history, which are things young applicants are more likely to have.
What You’ll Need to Apply
Whether you apply through a dealership, a bank, or a credit union, expect to bring:
- Government-issued photo ID such as a driver’s license or passport
- Your Social Security number, so the lender can pull your credit
- Proof of income — recent pay stubs, bank statements, or tax returns
- Proof of residence, such as a utility bill, lease, or bank statement
- Proof of insurance meeting the lender’s comprehensive and collision requirements
- Your down payment, whether cash, a check, or a trade-in
If you’re emancipated, bring a certified copy of the decree. If you’re using a co-signer, that person needs to bring their own ID, income verification, and Social Security number, and the lender will evaluate both credit profiles together before deciding.