Adding a Child as an Authorized User on Your Credit Card

If you want your child to start adulthood with a credit history, adding them as an authorized user on your card is one of the few ways to do it before 18. It works only if the card is in good shape, and only if your issuer reports authorized users at your child’s age. Not all of them do.

What happens when you add a child as an authorized user?

Most issuers let you add an authorized user online or by phone in a few minutes. Once the issuer reports your child on the account, its payment history and how much of the credit limit you’re using can appear on their credit report, typically including the account’s full history.

If the card has a long record of on-time payments and a low balance, that gives your child a head start. If it has late payments or runs close to its limit, those can show up on their report too.

Is adding an authorized user the same as opening a joint account?

No. On a joint account, each cardholder owes the full balance. An authorized user, however, can use the card but generally isn’t obligated to pay the debt.

As the primary cardholder:

• You’re responsible for every charge on the account, including your child’s.
• You can remove your child at any time.
• With some issuers, you can set a spending limit specifically for your child.

Your kid can’t change account settings, request a credit limit increase, or close the account.

At what age can you add a child as an authorized user?

At 18, your child can open a credit card, but until 21, they’ll need to show their own income or have a cosigner. Adding them as an authorized user is one way to get them to that point with a record already in place.

Each issuer sets its own minimum age, and some don’t publish one at all. Just as important is when the account starts showing on your child’s credit report. Some issuers wait until 18.

Based on each issuer’s own website, checked October 2026. “Not published” means we couldn’t find the policy on the issuer’s site, not that the issuer has no policy. Call your issuer to confirm before adding your child.

Read more >> Can You Open a CD for a Child?

Does your child need a Social Security number?

Yes, typically. American Express, Discover, and U.S. Bank all ask for the authorized user’s Social Security number (SSN) along with their name and date of birth.

American Express also accepts an individual taxpayer identification number (ITIN). If your issuer doesn’t require an SSN or an ITIN, ask whether the account will still be reported to your child’s credit file without one.

Read more >> How to Build Credit From Scratch

How adding a child as an authorized user affects their credit

What gets reported to the credit bureaus

Card issuers usually report authorized users to the credit bureaus, but they aren’t required to, and several wait until your child is 18. When the account does appear, it typically brings its full history with it, not just the months since you added them.

How it can help or hurt their credit

Once it’s reported, a card that’s managed well can help your child’s credit in three ways:

1. Length of history. The account’s age counts toward theirs, so they start adulthood with an established account.
2. Payment history. Your on-time payments show up as part of their record.
3. Low balances. A low balance against the limit shows them using little of their available credit.

Read more >> How to Monitor Your Child’s Credit Score

How adding a child as an authorized user affects your credit

Adding your child doesn’t change your credit on its own. Their spending can, however. Every charge they make is your debt. If the balance rises, so does the share of your limit you’re using, and a balance you can’t pay on time becomes a late payment on your report.

That’s important because amounts owed make up 30% of your FICO Score, and your credit utilization is the biggest part of that category.

Tips for managing the card shared with your child

Your child doesn’t need to use the card to benefit. If they do use it, a few habits protect both of you while also teaching them how credit works.

Set spending limits where you can

Some issuers, including American Express, let you set a spending limit for each authorized user. A limit caps what a mistake can cost and gives your child a budget to practice with. If your issuer doesn’t offer one, you can keep the physical card yourself and still have your child listed on the account.

Check the account regularly

Your card’s online account shows every purchase, including your child’s. If you see a charge neither of you made, report it to the issuer right away. Then walk your kid through what happened, since spotting fraud is a skill they’ll need on their own cards.

Use it as a teaching opportunity

If your child uses the card, show them the monthly statement, how to check it against their own receipts, and how the payment gets made. By the time they open their own card, they’ll have watched the whole cycle.

Read more >> How to Remove an Authorized User From a Credit Card

Bottom line

Adding your child as an authorized user can give them a credit history before they can open an account on their own, as long as your card is managed well and your issuer reports authorized users at their age.

That history still belongs to your account. You can remove them, and anything that happens on the card shows on their report too. Once your child turns 18, an account in their own name gives them payment history that doesn't depend on yours.

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