1967 A.D.       :           Chamber was formed with the name of “Bandipur Merchant Association” at Bandipur, Tanahun

1974 A.D.       :           Chamber Office was transferred to Dumre, Tanahun

1982 A.D.       :           Chamber Name was changed into “Tanahun Chamber of Commerce and Industry”

1988 A.D.       :           Chamber Office was transferred to Damauli, Tanahun

1993 A.D.       :           The First Office Secretary Appointed

1995 A.D.       :           Started to collect Service Charge

1998 A.D.     :  Partnership Programme Launched with PCCI/HWK RH Mainz Germany.

2011 A.D.       :           Dairy MASF Project was launched with Practical Action Nepal in collaboration with Chitwan Chamber of Commerce & Industry till 2013 A.D.