Bank statements are accounting records produced by banks under the various accounting standards of the world. Under GAAP and IFRES there are two kinds of accounts: debit and credit. Credit accounts are Revenue, Equity and Liabilities. Debit Accounts are Assets and Expenses. This means you credit credit accounts to increase their balances and you debit debit accounts to increase their balances. This also means you debit your savings account everytime you deposit money into it (and the account is normally in deficit) and you credit your credit card account everytime you spend money from it (and the account is normally in credit). However, if you read your bank statement, it will say the opposite- that you have credited your account when you deposit money, and you debit when you withdraw it. If you have cash in your account you have a positive or credit balance and if you are overdrawn it will say you have a negative or a deficit balance. The reason for this is because the bank, and not you, has produced the bank statement. Your savings might be your assets, but it is the bank's liability, so your savings account is a liability account which is a credit account and should have a positive credit balance. Your loans are your liabilities but the bank's assets so they are debit accounts which should have a negative balance. Below where bank transactions, balances, credits and debits are discussed, they are done so from the viewpoint of the account holder which is traditionally what most people are used to seeing.