The GAB was established in 1962, when the governments of eight International Monetary Fund (IMF) members—Belgium, Canada, France, Italy, Japan, the Netherlands, the United Kingdom, and the United States—and the central banks of two others, Germany and Sweden, agreed to make resources available to the IMF with an additional $6 billion of their resources. The additional money was intended to allow the IMF to have increased lending resources.
In 1964, the funds were used by the IMF to rescue the pound sterling. The G-10 grew in 1964 by the association of the eleventh member, Switzerland, then not a member of the IMF, but the name of the group remained the same. In 2011, Spain and Australia also joined.