An overdraft occurs when you write a check or initiate a debit card purchase, and your account doesn’t have enough money to cover the transaction. The bank will cover the difference to process the ...

When you use more funds than you have in your checking, savings, or money market bank account, you can end up with a negative balance. That can lead to your bank declining future transactions. If you ...

A $1 overdraft can trigger fees, negative balances, and account flags that cost far more than a dollar.