The Algemene Spaar- en Lijfrentekas / Caisse générale d'épargne et de retraite was a major Belgian public bank, originally created in 1850 as a pension institution. It was acquired in stages between 1993 and 1998 by Fortis Group. In 1999 Fortis merged it with Générale de Banque and other operations to form Fortis Bank, which in turn was integrated from 2009 into BNP Paribas.

Fortis, formally Fortis N.V./S.A., was a Benelux-centered global financial services group active in insurance, banking and investment management, initially formed in 1990 by a three-way Belgian-Dutch merger and headquartered in Brussels. It grew rapidly through multiple acquisitions, and in 2007 was the 20th largest financial services business in the world by revenue. It was listed on the Euronext Brussels, Euronext Amsterdam, and Luxembourg stock exchanges.