The territory of the East Region consists of the states of West Bengal, Assam, Arunachal Pradesh, Sikkim, Meghalaya, Nagaland, Manipur, Mizoram, Tripura and Kishanganj in Bihar.

REGIONAL OFFICE : EAST
Swastik Building, 5th Floor
Nazarul Islam Avenues, Teghoria
PO - Hatiara
Kolkata - 700 059
Tel : +91-33-32503030/25731484/25736028
Fax : +91-33-32506541

BRANCH OFFICE : ASANSOL
1st Floor, Chelidangs
Income Tax Office (Near Luxmi Furniture)
P.R. Mukherjee Road,
Asansol -713304
Dist Burdwan
West Bengal
Tel : +91-341-3206640

BRANCH OFFICE : GUWAHATI
S.K. Bhuyan Road (S.N. Gohain Lane)
Dighali Pukhuri
PO- Pan Bazar
Guwahati-781001
Assam
Tel : +91-0361-2736086

BRANCH OFFICE : KOLKATA (NORTH)
Swastik Building, 5th Floor
Nazarul Islam Avenues, Teghoria
PO - Hatiara
Kolkata - 700 059
Tel : +91-33-32506536/37
Fax : +91-33-32506541

BRANCH OFFICE : KOLKATA (SOUTH)
235/2, N.S.C.Bose Road
Near UCO Bank Building
Kolkata - 700 047
Tel : +91-33-32506539-40

BRANCH OFFICE : KOLKATA NEW ECONOMY
82, M. Chandra
North Square Road
Kolkata - 700 010

BRANCH OFFICE : SILIGURI
Maitri Building, 1st Floor
New pradhan Building
2nd By Lane Rishi Aurbondo Road
PO & PS - Siliguri - 734 401
Darjeeling , West Bengal
Tel : +91-0353-3207899