You have to be at least 18 years old to get a credit card in your own name in the United States, and if you’re under 21 federal law requires you to show independent income or bring a qualified co-signer. Anyone under 18 cannot sign a credit card contract at all, but a parent or guardian can add a minor as an authorized user on an existing account. So the practical ages break down into three stages: under 18 (authorized user only), 18 to 20 (apply with income proof), and 21 and up (standard adult rules).
Why 18 Isn’t Always Enough
Turning 18 gives you the legal right to apply, but approval is a separate question. The Credit CARD Act of 2009 amended the Truth in Lending Act to require that card issuers not open an account for anyone under 21 unless the applicant demonstrates an independent ability to make the minimum payments or has a co-signer who is 21 or older.1eCFR. 12 CFR 1026.51 – Ability to Pay
Before that law, 18-year-olds could sign up with few restrictions, and campus marketing was aggressive. The current rule keeps the application door open at 18 but forces the issuer to verify you can actually afford the card. Many 18-to-20-year-olds without steady income get denied, which is the point.
How to Qualify Between 18 and 20
If you’re under 21, you have two paths on paper and, in practice, only one.
Show Your Own Income
The common route is proving you earn enough to cover minimum payments yourself. That can include wages, salary, tips, scholarships applied to living expenses, or other income you personally receive. The word doing the work is “independent.” Issuers can only count income or assets that actually belong to you, not money you have access to through a parent’s account or household funds.2Consumer Financial Protection Bureau. Regulation Z, 1026.51 Ability to Pay
This is stricter than the rule for applicants 21 and older. A 2013 amendment to Regulation Z lets adults 21 and over include household income or income they reasonably expect to access, such as a spouse’s earnings. That flexibility does not extend to applicants under 21.3Federal Register. Truth in Lending (Regulation Z)
When you apply, the issuer may ask for your income, personal income, or salary. They can rely on what you report without demanding pay stubs, but they cannot approve you based on household income alone.2Consumer Financial Protection Bureau. Regulation Z, 1026.51 Ability to Pay
The Co-Signer Path (Mostly Closed)
The law also lets you apply with a co-signer age 21 or older who agrees to be financially responsible if you can’t pay, and whose ability to cover the debt the issuer verifies.1eCFR. 12 CFR 1026.51 – Ability to Pay In practice this option has nearly disappeared. American Express, Bank of America, Capital One, Chase, Citi, Discover, and Wells Fargo have all stopped accepting co-signers on credit card applications. Showing your own income is effectively the only route.
Credit Limit Rules Before 21
Approval isn’t the end of the age rules. If you’re under 21 and your card has a co-signer, the issuer cannot raise your credit limit without written permission from that co-signer. Even without a co-signer, the issuer must re-evaluate your ability to pay before granting any limit increase, whether you asked for it or they offered it.2Consumer Financial Protection Bureau. Regulation Z, 1026.51 Ability to Pay Once you turn 21, those restrictions lift.
Under 18: Authorized User Status
If you’re under 18, you cannot apply for any credit card in your own name, including a secured card. Credit card agreements are contracts, and minors generally lack the legal capacity to enter them.
The workaround is becoming an authorized user on a parent’s or guardian’s account. You get a card with your name on it linked to the primary cardholder’s account. You can make purchases, but you have no legal obligation to pay the bill. That responsibility stays with the primary cardholder.4Consumer Financial Protection Bureau. Am I Liable to Repay an Authorized User Debt
Most issuers report authorized user accounts to the credit bureaus, so once the account appears on your reports, its payment history and credit utilization factor into your profile. Some issuers may not report authorized user activity until the user turns 18, so call the issuer to confirm the policy before relying on it for credit building.
Issuer Age Minimums
Each issuer sets its own minimum age for authorized users, and the range is wide. Bank of America, Capital One, and Chase have no minimum age, so a parent can add a young child. American Express, Barclays, and U.S. Bank require the authorized user to be at least 13. Discover requires 15. Wells Fargo requires 18, which eliminates the minor-credit-building benefit on that issuer’s cards.
Risks to Watch
Authorized user status runs both ways. On-time payments and low balances by the primary cardholder help the authorized user’s credit profile. Missed payments or high balances hit the authorized user’s reports too. A parent who adds a teenager to an account they’re struggling to manage can damage the child’s credit before that child ever applies for their own card. The authorized user can be removed at any time, and the account will eventually drop off their reports, but negative marks recorded during that period can linger.
Alternatives for Teenagers
For families who want to teach money habits without involving credit, teen debit cards and prepaid spending cards fill the gap. They don’t build credit history, but they let teenagers practice spending decisions with parental oversight. Many are available with no minimum age and pair with apps where parents can set limits and watch transactions. A common progression is a debit card at 14 or 15, authorized user status at 16 or 17, and a first credit card at 18 once there’s some work income.
What to Check When You Apply at 18
Once you’re old enough to apply, choosing the card matters as much as getting approved. A few things to weigh:
- APR. Cards marketed to young adults and people with limited credit history often carry rates above 25%. If you pay in full each month, the APR is irrelevant. If you carry a balance, it adds up quickly.
- Fees. Look at annual fees, late payment fees, and foreign transaction fees. No annual fee is worth prioritizing on a first card.
- Credit limit. First-time cardholders usually get low limits, sometimes just a few hundred dollars. That’s normal and helpful, since it caps how much debt you can build while you learn.
- Secured versus unsecured. If you can’t qualify for a regular card, a secured card requires a cash deposit that becomes your credit limit. Responsible use is reported to the bureaus the same way and can move you to an unsecured card in six to twelve months.
The single most important habit for any new cardholder is paying the full statement balance by the due date every month. Carrying a balance doesn’t help your credit score, but it does cost you interest. On-time payments are the largest factor in your credit score, and a missed payment can stay on your credit report for seven years. Start with a small limit, use the card for one recurring expense you’d pay anyway, and set up autopay.