Credit cards are a form of borrowing where a card issuer lends you money to make purchases, and you repay that amount later—usually with interest if you don't pay the full balance. Understanding how they work means knowing the difference between your credit limit, your balance, and what you actually owe. This category covers the mechanics of credit cards: how interest accrues, what happens when you make a payment, how your credit score connects to your card activity, and what the terms and fees mean in practice.
The articles here answer questions like: How does a credit card transaction move from the store to your bill? What does it mean when a payment posts? How do annual percentage rates and minimum payments actually work? Why does paying only the minimum cost more over time? What's the relationship between your card activity and your credit report? These guides explain the systems behind credit cards so you can see how your choices affect what you owe.