Withdrawing more than your account contains is called an overdraft. Bank overdraft services generally allow your transaction to go through, but you will be charged a fee. Some banks prevent you from over drafting when swiping your debit card and may let you request that all transactions are declined when your account doesn’t contain enough funds. You can also enroll in optional overdraft protection, which allows you to cover an overdraft with money from another account, such as your savings or a credit card. Keep in mind that this protection can result in a fee, and if you pay for the overdraft via a credit card, it may also be subject to interest.
