A banker or bank is a financial institution whose primary activity is to act as a payment agent for customers and to borrow and lend money.

Banks have influenced economies and politics for centuries. Historically, the primary purpose of a bank was to provide loans to trading companies. Banks provided funds to allow businesses to purchase inventory, and collected those funds back with interest when the goods were sold. For centuries, the banking industry only dealt with businesses, not consumers. Banking services have expanded to include services directed at individuals, and risk in these much smaller transactions are pooled.

Traditional banking activities

Banks act as payment agents by conducting checking or current accounts for customers, paying cheques drawn by customers on the bank, and collecting cheques deposited to customers’ current accounts. Banks also enable customer payments via other payment methods such as telegraphic transfer, EFTPOS, and ATM.

Banks provide almost all payment services, and a bank account is considered indispensable by most businesses, individuals and governments. Non-banks that provide payment services such as remittance companies are not normally considered an adequate substitute for having a bank account. Banks borrow most funds from households and non-financial businesses, and lend most funds to households and non-financial businesses, but non-bank lenders provide a significant and in many cases adequate substitute for bank loans, and money market funds, cash management trusts and other non-bank financial institutions in many cases provide an adequate substitute to banks for lending savings.

Accounting for bank accounts

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.