How to Add a Minor to Your Credit Card: Age, Cost, and Liability

You can add a minor to your credit card by contacting your issuer and requesting to add your child as an authorized user on your existing account. Most major U.S. issuers allow this once the child reaches the issuer’s minimum age, and the process usually takes a few minutes online or over the phone. Your child gets a card in their name tied to your credit line, and you stay responsible for every charge.

How Old Your Child Has to Be

Federal law does not set a minimum age for authorized users, so each issuer sets its own floor. Check yours before you start.

These are internal policies and can change. Confirm the current rule by calling the number on the back of your card or checking your cardmember agreement.

What You’ll Need to Provide

Have the following ready when you make the request:

  • Your child’s full legal name, spelled exactly as it appears on their government-issued ID.
  • Their date of birth, which the issuer uses to confirm they meet the age requirement.
  • Their Social Security number. Some issuers ask for it up front; others only need it if you want the account reported to the credit bureaus. Capital One, for instance, only needs a name, date of birth, and phone number for a basic authorized user; the SSN comes in for higher-access roles or credit reporting.

If your child does not have a Social Security number yet, some issuers will still add them, but nothing will be reported to the credit bureaus. An Individual Taxpayer Identification Number is meant for federal tax purposes and is generally not accepted by credit card companies as a substitute.4Internal Revenue Service. Individual Taxpayer Identification Number (ITIN)

How to Actually Add Them

You have three ways to submit the request:

  • Online. Sign in and look for “Manage Users” or “Add Authorized User” under account services or settings. Enter your child’s information and submit.
  • By phone. Call the number on the back of your card. You’ll verify your identity with security questions or a one-time passcode, then the representative adds your child.
  • By mail. Some issuers still send a paper form on request. It’s the slowest option.

Once approved, the issuer prints a physical card in your child’s name. Standard delivery runs about seven to ten business days, and some issuers offer expedited shipping for a fee. The minor usually shows up as an active authorized user on your online dashboard within a few days of the request.

What It Costs

Most no-annual-fee cards charge nothing to add an authorized user. Premium cards often do:

  • Chase Sapphire Reserve: $195 per authorized user.
  • The Platinum Card from American Express: $195 per authorized user, though companion Gold cards can be added at no cost.
  • Capital One Venture X: no charge for up to four authorized users, though starting in 2026 a $125 fee applies per card for lounge access.

If you’re adding your child mainly to build their credit rather than share card perks, and your primary card charges a per-user fee, consider using a no-fee card instead.

Who’s on the Hook for the Charges

You are. As the primary cardholder, every dollar your child spends is your legal obligation. The minor is not a party to your cardmember agreement and has no duty to repay anything, even charges you didn’t authorize. If the balance goes unpaid, the issuer pursues you for the full amount plus interest and late fees, and any collection action, lawsuit, or wage garnishment is directed at you rather than at the authorized user.

Late fees and interest add up quickly on a card you’re not watching closely. Federal safe harbor rules cap the standard late fee, but interest on an unpaid balance compounds at your card’s APR.5Consumer Financial Protection Bureau. Credit Card Penalty Fees (Regulation Z) Set up autopay and account alerts so a teen’s purchase doesn’t quietly turn into a fee-and-interest problem.

What This Does to Your Child’s Credit

When your issuer reports the account to the credit bureaus, your payment history and the age of the account show up on your child’s credit report too. Consistent on-time payments and low utilization can give a teenager a credit score before they ever apply for their own account.

The reverse is also true. High balances relative to your credit limit or a missed payment can pull down your child’s developing profile the same way it pulls down yours. Only add your child to a card you manage well.

The SSN needs to be on file with the issuer for the account to appear on your child’s report. Without it, they get a working card, but no credit history is built.

Keeping Their Spending Under Control

Authorized users share your full credit line, so setting expectations before you hand over the card matters. Issuer tools that help:

  • Purchase alerts. Most mobile apps push a real-time notification for every transaction, or only for transactions above a dollar amount you set.6Chase. Setting a Spending Limit for Authorized Users
  • Card lock. Many issuers let you freeze and unfreeze an authorized user’s card instantly from the app.
  • Spending limits. Formal per-user caps are generally a business-card feature. On personal cards, most issuers don’t offer them, so alerts and locking are your main tools.

A conversation matters as much as any app setting. Decide together what the card is for, whether that’s gas, groceries, school supplies, or emergencies, and expand the list as your child shows they can handle it.

Taking Them Off Later

You can remove a minor at any time by calling customer service, going online, or using the app. The change usually takes effect immediately and the physical card stops working.

The account may then drop off your child’s credit report. If it doesn’t, they can contact each credit bureau and request removal. When it’s gone, the positive history that came with it, including payment record and account age, goes with it. If your child has no other credit accounts, their score can drop or become unscorable.

Give your child a heads-up before you remove them, especially if they’re applying for their own credit or financing. Waiting until they have independent accounts open makes the transition easier on their score.