The Province of Ontario Savings Office (POSO) was a financial institution established by the Government of Ontario, Canada in 1922 to provide a government-owned alternative to banks. The POSO was closed in 2003 when its assets were sold to the Quebec-based Desjardins Group cooperative of caisses populaires (credit unions) to form Desjardins Credit Union. In 2011, Desjardins Credit Unions in Ontario were transferred to Meridian Credit Union.