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.