Banks offer almost all types of payment services. The activities of a bank can be subdivided into retail banking, private banking, business banking, and investment banking. Banks offer more commercial services which include: issue of banknotes (promissory notes issued by a banker and payable to bearer on demand); issuing bank drafts and bank cheques; providing documentary and standby letters of credit, guarantees, performance bonds, securities underwriting commitments and other forms of off balance sheet exposures; safekeeping of documents and other items in safe deposit boxes; currency exchange; sale, distribution or brokerage, with or without advice, of insurance, unit trusts and similar financial products as a 'financial supermarket'.
Most banks are profit-making and private enterprises. However, some banks are government-run, or non-profits. Central banks, as a rule, are government owned.
