Prior to 1975, the Department was a small cell functioning within the then Planning and Development Department. After the State joined the mainstream of the Indian Union in 1975-76 a full-fledged Cooperation Department was established with Secretary Cooperation as Ex-officio Registrar of Cooperative Societies.

Sikkim Cooperative Societies (Amendment) Act, 2009

Sikkim Cooperative Societies Act, 1978 & Sikkim Cooperative Societies Rule1981