Citibank offers free e-mail and wireless alerts if you get near to overdrawing your account.

FORBES: Don't Get Fleeced By Overdraft Fees

Bank of America announced on Wednesday that it plans to deny any debit-card transaction that will result in a customer overdrawing his account.

FORBES: Bank of America's New Overdraft Policy: What It Means To You

One way to avoid overdrawing your account is to sign up for e-mail or mobile text alerts from your bank to notify you of a low account balance.

FORBES: Banking