A debit transaction occurs when a customer uses their debit card to make a purchase or withdraw cash from their bank account. This type of transaction directly deducts the amount spent from the available balance in the account, ensuring that the customer only spends what they have. Debit transactions are commonly used for everyday purchases, such as groceries or gas. They are considered a convenient and secure way to manage money, as they do not involve borrowing funds like credit transactions. Additionally, many banks offer real-time notifications for debit transactions, helping customers track their spending.