The story
The co-operative society Jord Arbejde Kapital was founded in Denmark during the Great Depression in 1931. The society issued a popular local currency which was subsequently outlawed by the Danish government in 1933. In 1934 it founded an interest-free savings and loan system and a Local Exchange Trading System. Though both systems were forced to close, the savings and loan system re-emerged in 1944. The experience of JAK-banking in Denmark inspired a group in Sweden to develop a non-profit organisation named Jord Arbete Kapital - Riksförening för Ekonomisk Frigörelse (National Association for Economic Emancipation) in 1965. This pioneers' group developed a mathematical system based on Saving Points, designated the "balanced saving system". The association grew slowly at first. In 1997, a legislative amendment required the association to receive a banking license from the Swedish Financial Supervisory Authority in order to continue operating as a financial institution, which was granted in that year. The bank's deposits are insured by the government.
From Wikipedia’s article on JAK Members Bank, shared under CC BY-SA 4.0.5