ADT-1: Information to Registrar for appointment of Auditor
Under Section 139 of the Companies Act, 2013, it is mandatory for a company to notify RoC regarding the appointment of an auditor.
ADT-3 (Notice of resignation by the Auditor)
The auditor appointed may resign at any time due to any reason before the expiry of his term of office. In doing so he has to follow the provisions as laid in the Act.
Removal of Statutory Auditor through ADT-2
The auditor can be removed from his office before the expiry of his term only by passing a special resolution and after obtaining prior approval of Central Govt.