If you do your banking business with a regular bank and not a credit union, your accounts likely will not be closed just because you filed bankruptcy, even if you happen to owe them money for fees or overdrafts. Many major banks have proven to be willing to continue doing business with clients even if they have declared bankruptcy while owing them a debt.
However, just because you may be able to maintain your relationship with your bank doesn’t always mean that you should. Contact an experienced bankruptcy attorney who can help talk you through these decisions and help inform you about the risks and benefits involved with staying with your bank.