The Institute caters to the training needs of all IA & AD offices located in Kolkata. The list of user offices as notified by the Office of Comptroller and the Auditor General of India is as follows:

1 Principal Accountant General (Audit -I), West Bengal, Kolkata
2 Principal Accountant General (Audit - II), West Bengal, Kolkata
3 Office of the Director General of Audit (Environment & Scientific Departments) Kolkata Branch
4 Director General of Audit (Central), Kolkata
5 Director General of Audit, Eastern Railway, Kolkata
6 Director General of Audit, South Eastern Railway, Kolkata
7 Principal Director of Audit, Railway Production Units & Metro Railway, Kolkata
8 Director General of Audit (Mines), Kolkata
9 Director General of Audit (Coal), West Bengal, Kolkata
10 Director General of Audit, Ordnance Factories, Kolkata 
11 Principal Accountant General (A&E), West Bengal, Kolkata 
12 Branch : Director General of Commercial Audit &Ex Officio Member, Audit Board I, Kolkata at Kolkata
13 Branch : Principal Director of Commercial Audit & Ex Officio Member, Audit Board IV, New Delhi at Kolkata
14 Branch : Finance and Communication Audit Office, Kolkata 
15 Branch : AG(A&E), West Bengal at Kolkata, Kolkata
16 Branch : Director General of Audit (Central), Kolkata at Port Blair, Andaman & Nicobar, Port Blair
17 Branch : Director of Audit Railway Production Units & Metro Railway, Kolkata at Bhardaman, West Bengal
18 Branch : Principal Director of Commercial Audit & Ex Officio Member, Audit Board, Ranchi at Durgapur, West Bengal