In most of the United States, you can get a loan at 18, because that is the age at which your signature on a contract becomes legally binding. Two states set the age of majority at 19, and federal student loans have no minimum age at all. Beyond those baselines, whether you can actually borrow depends on the type of loan, your state, and whether an adult is willing to cosign.
Why 18 Is the Default
A loan agreement is a contract, and contract law requires both sides to have the legal capacity to be bound by it. You gain that capacity on your 18th birthday in most states. Before then, any loan contract you sign is “voidable” at your option: you could return whatever you bought and walk away from the balance, and the lender would have little recourse in court.
Picture a 17-year-old who signs a $20,000 auto loan. Under the voidable-contract rule, that borrower could hand the car back and cancel the remaining debt. Lenders know this, which is why banks and credit unions almost never approve borrowers under 18 without a cosigner or a court order of emancipation. Once you turn 18, your signature sticks, and the lender can sue you if you default.
States Where the Age Is Different
Three states depart from the standard 18-year rule in ways that affect borrowing.
- Alabama sets the age of majority at 19. An 18-year-old in Alabama is still legally a minor and generally cannot sign an enforceable loan without a cosigner.1Alabama Legislature. Alabama Code Title 26 Chapter 1 Section 26-1-1 – Age of Majority Designated as 19 Years
- Nebraska’s general age of majority is also 19, but state law specifically allows anyone 18 or older to enter into binding contracts, sign promissory notes, and grant security interests. So 18-year-olds in Nebraska can, in practice, take out loans.2Nebraska Legislature. Nebraska Revised Statute 43-2101
- Mississippi defines a minor as anyone under 21 for most purposes, but carves out contracts involving personal or real property, where the cutoff is 18. An 18-year-old Mississippian can sign a mortgage or a secured auto loan even though the general age of majority is 21.3Justia Law. Mississippi Code Title 1 Chapter 3 Section 1-3-27 – Minor
If you live in one of these states, check whether your specific loan type falls under the general age rule or an exception before assuming you cannot borrow.
Federal Student Loans Have No Minimum Age
Federal student loans are the biggest exception. There is no minimum age to receive federal student aid; the Department of Education has said so explicitly.4U.S. Department of Education. Adult Students – Federal Student Aid Financial Aid Toolkit The federal statute governing eligibility lists requirements like enrollment in an eligible program and U.S. citizenship, but no age floor.5Office of the Law Revision Counsel. 20 USC 1091 – Student Eligibility
Congress also eliminated the “defense of infancy” for federal student loans in 1986. Ordinary contract law lets a minor void an agreement; federal student loans do not. Even if you signed the promissory note before turning 18, you are legally bound to repay, and you cannot use your age at signing as a defense. A dependent student under 18 still completes the FAFSA with parental information and can receive Direct Subsidized or Unsubsidized Loans through the school’s financial aid office.
Private student loans work differently. They follow standard contract law, so the borrower or a cosigner must have reached the age of majority in their state. Because most student borrowers under 21 have limited credit history and income, private lenders usually require a creditworthy adult cosigner regardless.
Credit Cards Add a Rule at 21
Credit cards technically are not loans in the installment sense, but people searching for the minimum borrowing age often want to know about them, so it is worth flagging the extra rule. Even after you turn 18, the Credit Card Accountability Responsibility and Disclosure Act of 2009 restricts how card issuers can approve applicants under 21. An issuer cannot open an account for someone under 21 unless the applicant demonstrates an independent ability to make at least the minimum required payments.6eCFR. 12 CFR 1026.51 – Ability to Pay
In practice, an 18-, 19-, or 20-year-old applicant needs to show enough income, usually from a job, to cover the card’s minimum payments. If you cannot show that income on your own, the alternative is a cosigner who is at least 21 and who takes on full legal responsibility for the balance. Once you turn 21, these extra requirements fall away.
Getting a Loan Before You Turn 18
There are two ways someone under the age of majority can access credit in their own name: a cosigner or emancipation.
With a cosigner, an adult co-signs the loan and becomes fully liable for the debt alongside the minor. Lenders rely on the cosigner’s contract enforceability and creditworthiness. If payments stop, the lender can collect from the cosigner without first pursuing the primary borrower.
Emancipation is a court process that ends a parent’s legal authority over a minor and grants many of the legal rights of adulthood, including, in most states, the ability to enter into binding contracts. That said, emancipation does not guarantee identical treatment across every category of lending, and some states limit which contracts an emancipated minor can sign. For conventional mortgages, for instance, Fannie Mae requires that the borrower has “reached the age at which the mortgage note can be enforced in the jurisdiction where the property is located,” which still turns on state law.7Fannie Mae. General Borrower Eligibility Requirements
If you are emancipated, bring a certified copy of your court order to any lender. Approval still depends on the usual factors: credit history, income, and debt-to-income ratio. Emancipation removes the age barrier, not the underwriting.
Building Credit Before You Can Borrow
If you are still too young to borrow on your own, you can start building a credit file as an authorized user on someone else’s credit card. A parent or guardian adds you to an existing account, and you get a card in your name. You are not legally responsible for the balance, but the account’s payment history may appear on your credit report.
Minimum ages for authorized users vary by issuer. American Express and U.S. Bank set the minimum at 13, Discover requires 15, and Wells Fargo requires 18. Chase, Bank of America, and Capital One do not publicly specify a minimum. Not every issuer reports authorized-user activity to the credit bureaus for minors; Chase, for example, does not report authorized-user history for cardholders under 18. Before going through the setup, ask the issuer about its reporting policy, because a card that does not report will not build a credit file.
Done early, this can leave you with several years of positive payment history by the time you turn 18 and apply for your own loan or card. That head start can help you qualify without a cosigner and get a better interest rate.
Do Not Lie About Your Age
Misrepresenting your age on a loan application is fraud, with consequences beyond having the loan canceled. Courts in many states have held that a minor who commits actual fraud, meaning an affirmative false statement rather than mere silence, can be sued for the resulting damages.
The rules vary. In some states, a minor who lied about their age can still void the contract but must return what they received or compensate the lender. In other states, the minor is blocked from voiding the contract at all if the lender reasonably relied on the misrepresentation. Either way, a false statement on a loan application can bring criminal charges for obtaining money under false pretenses and lasting damage to your ability to borrow later.