You must be at least 18 years old to open a credit card in your own name
Federal law sets 18 as the minimum age to sign a credit card contract. Before that age, you cannot hold a card account by yourself, even with parental permission. Some card issuers require you to be 21 or older, but 18 is the legal floor.
If you are under 18, you have other ways to start building credit history. A parent or guardian can add you as an authorized user on their card, or you can open a secured credit card once you turn 18. Both routes create a credit record that lenders will see later.
Key Takeaways
- You must be 18 to open a credit card account in your name; some issuers set the minimum at 21.
- Before 18, you can become an authorized user on a parent's card and build credit history without owning the account.
- At 18, you can open a secured credit card, which requires a cash deposit but reports to credit bureaus and helps you build a credit score from scratch.
- Your credit history starts the moment an account reports to the three major credit bureaus — Equifax, Experian, and TransUnion.
Why age 18 matters for credit
At 18, you become a legal adult able to sign contracts. A credit card is a contract between you and the card issuer. The issuer needs to know you can be held responsible for what you charge and what you owe. That legal responsibility is why the age floor exists.
Before 18, a contract you sign is not binding in most states — a parent or guardian can cancel it. Card issuers will not take that risk. Even if your parents co-sign, you still cannot be the primary account holder until you turn 18.
Becoming an authorized user before 18
An authorized user is someone who can use a credit card account but does not own it. The account holder — usually a parent — remains responsible for all charges and payments. You get a card with your name on it and can make purchases, but the account stays in your parent's name.
When you are an authorized user, the account activity reports to your credit file at the three major credit bureaus. This means on-time payments build your credit score even though you do not own the account. This is one of the fastest ways to start a credit history before you turn 18.
The downside is that if the account holder misses payments or carries a high balance, that damage shows up on your credit report too. You have no control over the account, so you depend on the account holder's habits. Ask a parent to add you only if they pay on time and keep their balance low.
Opening a secured card at 18
A secured credit card requires you to put down a cash deposit, usually between $200 and $2,500. That deposit becomes your credit limit. You use the card like any other — charge purchases, receive a bill, make payments — but the issuer holds your deposit as collateral in case you do not pay.
Secured cards report to all three credit bureaus, so every on-time payment builds your credit score. After 6 to 18 months of responsible use, many issuers will convert your account to a regular unsecured card and return your deposit. This is a real path to building credit from zero.
The catch is that secured cards charge interest on balances you do not pay off each month, just like regular cards. Some also charge annual fees. Read the terms before you open one — not all secured cards are worth the cost.
What happens when you turn 18
Once you turn 18, you can open a credit card on your own. You do not need a parent's permission or signature. Card issuers will ask for your Social Security number, income, and employment history. If you have no credit history yet, they may offer you a secured card or a card with a low credit limit.
If you were an authorized user before 18, that account history stays on your credit report. It gives you a head start — your credit score may already be in the fair or good range, which means you can may have access to for better cards with lower interest rates and fewer fees.
If you are turning 18 with no credit history, start with a secured card or a student card designed for people with no credit. Build a track record of on-time payments for at least six months before you try to move to a regular card.
Building credit before you can own a card
Credit history comes from accounts that report to the credit bureaus. Before 18, the main option is being an authorized user. But you can also build credit through other accounts that do not require you to be 18.
Some credit unions offer youth savings accounts that report to credit bureaus. A few issuers offer debit cards that track your spending and report to bureaus, though these are less common. A parent can also co-sign a loan with you — a small personal loan or car loan — which creates a credit record you both own.
The goal is straightforward: get an account in your name (or as an authorized user) that reports to Equifax, Experian, or TransUnion. Every on-time payment adds to your credit score. By the time you turn 18, you will have a real credit history instead of starting from zero.
Common mistakes to avoid
Do not ask a parent to add you as an authorized user on a card they do not use responsibly. If they miss payments or carry a high balance, your credit score will suffer along with theirs. You have no control over the account, so you are betting your credit on someone else's habits.
Do not open multiple cards at once when you turn 18. Each process creates a hard inquiry on your credit report, which lowers your score slightly. Space out applications by at least three to six months. One card used responsibly will build credit faster than three cards used carelessly.
Do not treat a credit card as information programs. Every dollar you charge is a dollar you owe. If you do not pay the full balance each month, interest charges pile up fast. A $500 purchase at 20% interest costs you $100 a year if you only make minimum payments.
Frequently Asked Questions
Can I get a credit card at 17 if my parent co-signs?
No. Federal law requires you to be 18 to sign a credit card contract, even with a co-signer. A parent can add you as an authorized user, which lets you use their card and build credit, but you cannot own the account yourself until you turn 18.
Does being an authorized user hurt my parent's credit?
No. Your parent's credit is not affected by you being an authorized user. However, if you misuse the card and the account holder does not pay, it damages both your credit and theirs. The account holder is always responsible for the debt.
What credit score do I need to get a regular credit card at 18?
You do not need a credit score to open a secured card — that is the point of it. For a regular unsecured card at 18, most issuers want a score of at least 600, though some accept lower scores. If you have no history, start with a secured card or student card.
Will my authorized user account disappear when I turn 18?
No. The account stays on your credit report as long as the account holder keeps it open. It continues to help your credit score. You can keep using it, or you can open your own card and let the authorized user account age in the background.
How fast can I build a credit score from zero?
Credit bureaus need at least one account with activity to calculate a score. Most scores appear within one to two months of opening an account. However, a meaningful score — one that qualifies you for good interest rates — usually takes six months to a year of on-time payments.