Rule 80(3) of CGST Rules 2017 prescribed limit of 2 crore to conduct audit u/s 35.
It is to be noted that though in Section 35(5) the term “turnover” has been used, it shall mean “aggregate turnover”. Which is defined as under Section 2(6) of the CGST Act/SGST Act: Aggregate Turnover” means the aggregate value of all taxable supplies (excluding the value of inward supplies on which tax is payable by a person on reverse charge basis), exempt supplies, exports of goods or services or both and inter-State supplies of persons having the same Permanent Account Number, to be computed on all India basis but excludes central tax, State tax, Union territory tax, integrated tax and cess.
So it can be said that while calculating turnover under Rule 80(3) turnover of all units of taxpayer to be considered even though these units located in different states.(Until any clarity comes from department on calculation of turnover for audit purpose we can follow this approach).
Hope its clear that limit is 2 crore and not 1.5