What is the purpose of a debit card?

The purpose of a debit card is primarily to transfer money electronically from a bank account at the point of sale or for online transactions. When a debit card is used, it withdraws funds directly from the user's checking account, making it a convenient tool for accessing account funds without the need for cash. This method of payment simplifies transactions and ensures that spending is kept within the limits of the available account balance, thereby promoting financial responsibility.

In contrast to borrowing money or receiving cash rewards, a debit card strictly operates within the money that is already available in the associated bank account. Options that mention borrowing or allowing overdrafts do not accurately represent the fundamental function of a debit card, which requires available funds to complete a transaction. Thus, the correct understanding of a debit card's purpose focuses on its ability to facilitate direct access to one's own funds for purchases and bill payments.