The main source of income of commercial banks is

The main sources of income of commercial banks include the following aspects:

1. Net interest income: Commercial banks mainly obtain interest income through loans, deposits and other businesses, and the net income after paying interest costs is called net interest income.

2. Net fee and commission income: Commercial banks usually charge a certain fee and commission for providing customers with various services, such as account management, credit card service, wealth management and custody business, and the net income after deducting costs is called net fee and commission income.

3. Net investment income: Commercial banks also obtain investment income by investing in securities, buying and holding non-financial assets, and investing in company equity. The net income after deducting related expenses is called net investment income.

4. Exchange income: Commercial banks provide customers with foreign exchange services such as exchange and earn income through exchange rate fluctuations.

5. Other income: Commercial banks may also obtain other income by selling assets and earning guarantee fees.