Credit Card Basics guides

Credit card basics guides explain how credit cards work, and they are for you if you are getting your first card or want to understand the terms on a card you already have. They cover the parts of a card agreement that affect what you pay and how your credit develops.

The essentials are straightforward. Your APR is the yearly interest rate charged on balances you carry past the due date; if you pay your statement balance in full each month, most cards charge no interest on purchases. Your credit limit is the most you can owe at once, and the share of it you use affects your credit score. Paying on time every month is the habit that matters most for your credit history.

Read how credit card APR works to see how interest is calculated, and understanding your credit score before you apply. How your credit limit is decided explains what issuers look at, and how to build credit with a credit card shows how to use a first card well.