1. Financial accounting.
In financial accounting a debit balance is an asset within the balance sheet, or an expense within the profit and loss account (or income statement).
In banking a debit balance - in the bank's records - is one which stands in favour of the bank.
The customer owes money to the bank.
Also known as an overdrawn balance.
(Contrasted with a credit, or positive, balance in the bank's records. Being a balance standing in favour of the customer.)