A credit card is a financial product that allows the holder to borrow money from a bank or financial institution to make purchases or withdraw cash. Credit cards are issued by banks and other financial institutions, and they typically come with a credit limit, which is the maximum amount that the cardholder can borrow. Credit cards also have an interest rate, which is the percentage of the borrowed amount that the cardholder must pay back in addition to the principal amount. Credit cards are widely used as a convenient and secure way to make purchases and access cash. They also often come with rewards and other benefits, such as cash back or travel points. However, it is important to use credit cards responsibly and avoid overspending or carrying a high balance, as this can lead to debt and damage your credit score.