You won’t pay interest on the transactions you make with your debit card, but you need to be aware of common debit card fees and how to avoid them:
Overdraft fees. If your bank doesn’t offer overdraft protection, this is a fee to keep an eye on. That’s because if you accidentally spend more money than you have in your linked account, your bank may charge you an overdraft fee.
ATM fees. Using ATMs outside of your bank’s ATM network may result in transaction fees that will be deducted from your linked account.
Maintenance fees. Some banks charge account maintenance fees if your minimum balance falls below a certain amount.