Ms. Purnima,
It is mandatory to adoption of Cost Audit Report in BOD meeting before filing with MCA.
As per Cost Audit Rules 2014, for the Cost Audit Year 2015-16 Chronological order is as follow:
1. Cost Auditor Appointment should be completed within 180 days from start of FY year 2015-16 (last date was 27th Sep. 2015).
2. Cost Auditor has to submit Cost Audit Report for the year 2015-16 to BOD within 180 days from end of FY year 2015-16.
3. Company has to submit Cost Audit Report within 30 days from the date of BOD where BOD have approved it.
For the better clarification herewith enclosing a excel sheet regarding the Cost Audit Applicability and procedure.