Adding a minor as an authorized user on a credit card is the standard way to build a child’s credit before they turn 18, and no federal law sets a minimum age for doing it. Each bank picks its own cutoff: some have none at all, others require the child to be at least 13. The child takes on no debt and doesn’t have to use the card for the account’s history to show up on their credit file.
This matters because the Credit CARD Act of 2009 blocks anyone under 21 from opening their own credit card unless they can show independent income or get a cosigner who is at least 21.1Office of the Law Revision Counsel. 15 USC 1637 – Open End Consumer Credit Plans Authorized user status sidesteps that rule entirely because the child isn’t applying for credit.
Age Cutoffs by Issuer
Policies at major banks as of late 2025:
- Bank of America: no minimum age
- Capital One: no minimum age
- Chase: no minimum age
- American Express: 13
- Barclays: 13
These policies change without notice. Call the number on the back of your card before you try to add a child, especially a young one. If the bank’s internal cutoff is 13 and your child is 10, the request will simply be denied without an explanation attached.
What You Need to Add Your Child
Three pieces of information do the whole job:
- Full legal name, spelled exactly as it appears on the child’s Social Security card. A small mismatch can keep the credit bureaus from linking the account to the right file.
- Social Security number, which the bureaus use to create or locate a credit file for the child.2Social Security Administration. Social Security Number and Card – Documents
- Date of birth, so the bank can confirm the child clears its age requirement.
Most banks accept this through the account management area of their website or app. You can also call customer service. Double-check every digit of the Social Security number before submitting; a typo means the account either won’t appear on the child’s credit report or will attach to someone else’s.
How the Account Shows Up on Your Child’s Credit
Once the child is added, the issuer typically reports the account to the credit bureaus under the child’s Social Security number. The child’s file then shows the account’s full history: the original open date, the credit limit, and the payment record. Reporting usually begins within one or two billing cycles. Your child does not have to use the card for any of this to happen.
Reporting isn’t uniform. Most major issuers report to all three bureaus, but they aren’t legally required to report authorized user accounts at all. Experian automatically excludes late payments from authorized user accounts on that user’s report, since the authorized user isn’t responsible for paying the bill. The other two bureaus don’t necessarily do the same.
That cuts both ways. Low balances and on-time payments build a strong foundation for your child. Missed payments and high utilization can drag the child’s credit down before they ever hold the card. The scoring factors that matter here are the same ones that matter anywhere: payment history, account age, and utilization. Financial advisors commonly suggest keeping balances below 30 percent of the limit.
One caveat on how lenders read the file. Some can tell the difference between a primary account and an authorized user account, and they may mentally discount the latter when deciding whether to extend credit. The score benefit is real; the lender’s judgment is a separate layer.
Your Child Doesn’t Owe the Debt
An authorized user can make purchases but has no legal obligation to pay the bill. The debt belongs to the primary cardholder. The Consumer Financial Protection Bureau confirms that authorized user status generally does not create liability for the account’s balance.3Consumer Financial Protection Bureau. Am I Liable To Repay the Debt as an Authorized User If a collector ever contacts your child about the balance, authorized user status is the answer.
The protection is especially solid for minors, who in most states lack the legal capacity to enter binding contracts anyway. The scenario rarely comes up, because the child never signs a credit application. The primary cardholder handles everything.
Costs and Card Controls
Adding an authorized user is free on most cards. The exception is premium cards with high annual fees. American Express Platinum, for example, charges $195 per year for each additional cardholder. If your child isn’t going to use the perks, a no-fee card with a long clean history is the better credit-building tool.
Whether you hand the card to your child is your call. Many parents add a child purely for the credit history and keep the card locked in a drawer.
If you do let your child use the card, spending controls on personal credit cards are limited. Most personal cards don’t let you set a dollar cap for an individual authorized user. What you can usually do is lock and unlock the authorized user’s card through your bank’s app, which gives you an on-off switch but not a ceiling. Some business cards go further; Chase’s Ink business cards, for instance, let you set a specific dollar limit for each authorized user. That isn’t typical on personal accounts.
Protecting Your Child’s Credit File
Adding your child creates a credit file they didn’t have before, and that file is now a potential target. Child identity theft often goes undetected for years because nobody thinks to check a 10-year-old’s credit report. The Federal Trade Commission warns that stolen child identity information can be used to open bank accounts, cell phone plans, and other credit lines.4Federal Trade Commission. How To Protect Your Child From Identity Theft
Federal law lets a parent place a security freeze on a child’s credit file if the child is under 16. The freeze blocks new accounts from being opened in the child’s name.5Office of the Law Revision Counsel. 15 USC 1681c-1 – Identity Theft Prevention, Fraud Alerts and Active Duty Alerts Minors who are 16 or 17 can place and remove the freeze themselves.4Federal Trade Commission. How To Protect Your Child From Identity Theft To put the freeze in place, contact each of the three bureaus individually and provide proof of your identity and your authority to act on the child’s behalf, such as a birth certificate. The freeze won’t interfere with the authorized user account you’ve already added; it only blocks new accounts.
When to Remove Your Child
Removing the child erases the tradeline from their credit report. The account history, age, and payment record all drop off as though it was never there. If the account was the oldest item on the child’s file, losing it can noticeably shorten their credit history.
Pull them off anyway if the account goes sideways: missed payments, high balances, collections. Late payments damage a credit profile more than a short credit history does. A clean account, though, is worth keeping in place indefinitely.
At 18, the Head Start Pays Off
Authorized user history gives your child a running start, but lenders also want to see that the young adult can manage credit on their own. A secured credit card is the usual first step. The child puts down a deposit, typically a few hundred dollars, that serves as the credit limit, and uses the card normally. With an authorized user history already on file, some 18-year-olds also qualify for a student card or an entry-level unsecured card without a cosigner, as long as they can show the independent income the CARD Act requires.1Office of the Law Revision Counsel. 15 USC 1637 – Open End Consumer Credit Plans
There’s no reason to remove your child from the old account when they turn 18. Keeping the long-standing tradeline active while they open accounts in their own name gives them both a lengthy credit history and proof of solo responsibility. That combination tends to produce stronger scores than either on its own.