A credit limit is the maximum amount you can borrow, or spend, on your credit card. As you use your card, the amount of each purchase is subtracted from your credit limit. And the number you’re left with is known as your available credit, or the amount of money you can still charge to your card. As you pay off your balance, the amount of credit available to you increases once more based on your credit limit. There are numerous factors that can influence your credit limit.