You can build credit before 18, but not by opening an account yourself. The practical route is for a parent or guardian to add you as an authorized user on their credit card, which lets that account’s payment history appear on your credit file years before you can sign for credit on your own.
Why a Minor Cannot Open a Credit Account Alone
Two legal barriers block independent credit before 18. Under the CARD Act of 2009, no one under 21 can open a credit card without either independent income or a co-signer aged 21 or older who can cover the debt.1Office of the Law Revision Counsel. 15 USC 1637 – Open End Consumer Credit Plans Contract law adds a second layer: an agreement signed by a minor is voidable at the minor’s option, so the minor can walk away and the lender has little recourse. Because the debt cannot be enforced, no issuer will extend credit directly to a 15- or 16-year-old.
That is why the workaround exists. Authorized user status is not a loophole; it is the mechanism the credit reporting system provides for building a file before adulthood.
How Authorized User Status Works
A parent or guardian adds the minor to an existing credit card. The issuer reports that account’s activity to the credit bureaus under the minor’s name, and the minor gets a card linked to the same account. Legal responsibility for the balance stays with the primary cardholder. What flows onto the minor’s report is the account’s payment history, its age, and its credit limit.
The minor does not need to use the card. The credit-building benefit comes from the account being reported, not from any spending activity.
Which Issuers Allow Minors, and at What Age
There is no federal minimum age for authorized users. Each issuer sets its own rule. American Express and U.S. Bank allow authorized users starting at 13. Discover requires age 15. Wells Fargo will not add anyone under 18. Chase, Capital One, Bank of America, and Citi do not publish a minimum age, which in practice means minors of any age can be added. Confirm with the specific issuer before assuming a particular card is an option.
What the Primary Cardholder Provides
The primary cardholder submits the request online or by phone. The bank asks for the minor’s full legal name, date of birth, and mailing address. Some issuers also ask for the Social Security number. Providing it is not always required, but it helps the bureaus match the account to the correct file. Without an SSN, matching depends on name and date of birth, which can cause delays or mismatches.
If the primary account is in good standing, most banks process the request within a few business days and mail the new card to the primary holder’s address. The account typically shows up on the minor’s credit report during the next billing cycle, roughly 30 days later.
When a Credit Score Actually Appears
Appearing on a credit report is not the same as having a credit score. FICO requires at least one account open for six months or more, and at least one account reported to the bureau within the past six months, before it will generate a score. A minor added in January would not have a scorable file until around July at the earliest.
Once a score exists, three factors do most of the work: the length of the account’s history, a consistent record of on-time payments, and low credit utilization. A parent who has held the card for a decade with a perfect payment record and keeps the balance well below the limit passes all of that positive history through to the minor’s file. A teenager can reach 18 with a credit report showing years of responsible account management.
One qualifier is worth keeping in mind. Newer FICO scoring models give authorized user accounts less weight than accounts where the person is the primary borrower. The benefit is real but not a full substitute for eventually holding credit in your own name.
h2>The Risks of Sharing an Account
The same reporting that transmits good history transmits bad history. A missed payment, a balance close to the credit limit, or a delinquency on the primary account lands on the minor’s report too. A parent who runs into financial trouble can damage the file they were trying to build.
Removal is the safety valve. The minor, or the primary holder on their behalf, can ask the issuer to remove the minor from the account. Once removed, the account drops off the minor’s credit report and stops affecting scores. Experian says it will automatically remove delinquent authorized user accounts when the authorized user is not responsible for paying. The other bureaus handle removal on request. This exit is far easier than getting off a co-signed loan, where liability continues until the debt is paid or refinanced.
Before adding a minor, the primary cardholder should look honestly at the account. A card with a $10,000 limit carrying a $9,500 balance will pull the minor’s utilization ratio down and hurt their score even if every payment is on time. The account that helps most has a low balance, a high limit, and a long clean history.
Freezing a Minor’s Credit File Against Identity Theft
Children are frequent targets for identity theft because no one is watching their credit reports. Federal law lets a parent or legal guardian place a free credit freeze on a child’s file at all three major bureaus. The statute covers anyone under 16 and requires the bureaus to create a file solely to freeze it if one does not already exist. That protective file cannot be used for credit decisions.2Office of the Law Revision Counsel. 15 USC 1681c-1 – Identity Theft Prevention; Fraud Alerts and Active Duty Alerts Parents need to provide proof of authority, such as a birth certificate, along with identification for themselves and the child.3Federal Trade Commission (FTC). New Protections Available for Minors Under 16
It is worth checking whether a file already exists in a child’s name. A pre-existing file that the family did not create is a warning sign for fraud. The CFPB advises contacting each bureau directly: TransUnion and Experian have online inquiry forms, and Equifax requires a written request by mail.4Consumer Financial Protection Bureau. How Do I Check to See if a Child Has a Credit Report? If a report exists and the family didn’t create it, file an identity theft report and dispute the fraudulent accounts with each bureau.
A freeze does not interfere with authorized user reporting. The parent is adding the child to an account the parent already owns, not opening a new account in the child’s name, so the freeze can stay in place while the credit-building activity continues.
What Changes at 18
Turning 18 removes the contract barrier, but the CARD Act rules still apply between 18 and 20. Without a co-signer, you must show your own current or reasonably expected income and assets.5Consumer Financial Protection Bureau. Regulation Z – 1026.51 Ability to Pay That includes wages from a part-time job, tips, scholarship funds beyond tuition, and money deposited regularly into your own account. It does not include a parent’s income, even if they help pay your bills, unless those funds are deposited regularly into an account in your name.
A secured credit card is usually the easiest first primary account. You put down a cash deposit, the issuer gives you a limit near that deposit, and the account reports to the bureaus like any other credit card. After several months of on-time payments, many issuers upgrade the account to unsecured and return the deposit.
Keep the authorized user account open through this transition. Its length continues to support your file while your own new accounts are still young. After a year or two of clean primary account history, you’ll have a blended profile: long average account age from the authorized user card, plus a track record of managing credit yourself.