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 : +91-33-40112900
Fax : +91-33-25735718

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
House No.4, Lakhimi Path
Panjabari-Kalakshetra Road
Guwahati-781 037
Assam
Tel : +91-361-2335567

BRANCH OFFICE : KOLKATA (NORTH)
Swastik Building, 5th Floor
Nazarul Islam Avenues, Teghoria
PO - Hatiara
Kolkata - 700 059
Tel : +91-33-40112900
Fax : +91-33-25735718

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

BRANCH OFFICE : KOLKATA NEW ECONOMY
82, Hemchandra Naskar Road
Kolkata - 700 010
Tel : +91-33-32506541/38

BRANCH OFFICE : SILIGURI
Maitri Building, 1st Floor
New pradhan Building
70/16, 2nd By Lane Rishi Aurbondo Road
PO & PS - Siliguri - 734 401
Darjeeling , West Bengal
Tel : +91-0353-2520582