All companies/branches doing business in the life insurance sector (life insurers (in German language)) in the Federal Republic of Germany are bindingly required to belong to the insurance guarantee fund.
The only exception to this are branches of insurers that are based in another country of the European Union or the European Economic Area (EEA). Another compulsory member is the Versorgungsausgleichskasse (a pension equalisation fund pursuant to Section 3 Subsection 4 of the German Pension Equalisation Act (VersAusglKassG)). Pensionskassen, a specific kind of pension funds, with comparable financial circumstances to life insurance companies can also become members of the insurance guarantee fund on the basis of fixed regulations (in German language), (Section 221 Subs. 2 of VAG (in German language)) (Pension funds (in German language)).