Some stores may require a processing fee for debit card transactions. (americantitleloans.com)
Most of them will have requirements like you must have direct deposit setup with them, and you must do a minimum number of debit card transactions from the account per month. (money.stackexchange.com)
When there are insufficient funds in the account, we may, at our discretion, use the courtesy overdraft limit to pay checks, automatic bill payments and recurring debit card transactions. (univest.net)