Authorized User on a Credit Card: How It Works
Becoming an authorized user (AU) on someone else's credit card is one of the fastest ways to build credit without opening your own account. When added correctly, the account's full payment history, account age, and credit limit appear on your credit report — often adding 30-60 points within 1-2 billing cycles.
See also: best first credit cards — for when you are ready to open your own account.
What Is an Authorized User?
An authorized user is someone added to another person's credit card account with permission to make charges. Unlike a joint account holder, an AU has no legal obligation to pay the bill — that responsibility belongs entirely to the primary cardholder. You can be an AU without ever using the card or even holding a physical copy.
The primary cardholder can add an AU through their online account portal or by calling the issuer's customer service line. Most issuers require only a name, date of birth, and sometimes the AU's SSN to add them.
How Being an Authorized User Builds Your Credit
When the issuer reports the account to credit bureaus, your credit report gains:
- The account's complete payment history (on-time payments dating back years)
- The full credit limit (which reduces your utilization ratio)
- The account's age (which improves your average account age)
- A new credit mix entry if you had no credit card before
The effect is strongest when the primary account has a long, clean payment history and a low balance relative to its limit. A 10-year-old account with zero late payments and 10% utilization will move your score far more than a 1-year-old account with 80% utilization.
Benefits and Risks
| For the AU (You) | For the Primary Cardholder |
|---|---|
| Benefit: Build credit with no application or deposit | Benefit: Help a family member or friend |
| Benefit: Gain instant access to established account history | Risk: AU spending increases their utilization |
| Risk: If the primary misses a payment, it hurts your score too | Risk: Financial responsibility stays with primary cardholder |
| Risk: No control over the primary's payment behavior | Tip: Set a $0 spending limit on the AU to prevent charges |
Issuer Rules for Authorized Users
Most major issuers allow authorized users at no charge. Here is what you need to know by issuer:
| Issuer | Min. AU Age | Fee | Reports to Bureaus? | Notes |
|---|
Authorized User vs. Opening Your Own Card
Being an authorized user builds credit passively but has limits. You cannot control the account's payment history, and you will not have your own credit utilization data. Once you have established a score (usually 6-12 months), opening your own card gives you full control over your credit profile and opens doors to higher limits and rewards.
When you are ready to open your own account, see: best credit cards for beginners — including cards that require no credit score. Also read: how to get your first credit card.