A credit card is a card which allows people to buy items without cash. Each card has a unique number. Using this number, plus other details on the card (such as the validity date, or a code), the client can buy goods or services. The issuer of the card automatically transfers the money to the seller. The person using the card gets a credit. The customer has a certain amount of time to pay the credit card bill. If the bill is left unpaid for some time, the customer will have to pay interest for the amount that is left unpaid. Payment using a credit card is one of the most common methods of electronic payment. A debit card similarly allows paying without cash, but it pays with money in the user's bank account.
Paying with a credit card means you borrow the money and must pay it back in a specified time. Users who fail to pay in time may have to pay much more.