Institutional units that are independent legal entities and market producers (institutional units freely selling financial services in a market), and whose principal activity is the production of financial services (monetary financial institutions; non-MMF investment funds; other financial intermediaries, except insurance corporations and pension funds; financial auxiliaries; captive financial institutions and money lenders; insurance corporations; pension funds). Also included are institutional units providing financial services, where most of either their assets or their liabilities are not transacted on open markets.
The definition of the concept is consistent with Regulation (EU) No 549/2013 of the European Parliament and of the Council of 21 May 2013 on the European system of national and regional accounts in the European Union.