In the system of national accounts, economic units that dispose of their own assets and incur liabilities in their own name by being economically active and transacting with other economic units are called institutional units. Institutional units are grouped into institutional sectors and subsectors. Institutional sector - groups of institutional units with similar economic behaviour. Institutional units are grouped into sectors according to their main activity and purpose. The following five institutional sectors are distinguished: non-financial (entities whose main activity is the sale of goods or provision of services), finance (banks, credit unions, insurance companies), general government (general government and budgetary institutions), households (sole proprietorships/individual enterprises, partnerships), non-profit institutions serving households (private non-profit organisations).