Yes Technical guide of ICAI states April 2017 to March 2018. I think that is a very conservative view. How can turnover of non-GST period be included for purpose of computing turnover?
Yes , according to GSTN also its turnover shall be inculded for whole year . But as per my view shall be for 9 months only because the GST Act was implemented from 1/7/2017 , cannot be effective retrospective
As per Section 35(5) , every registered person whose Turnover For FINANCIAL YEAR exceeding prescibe limit (read with Rule 80) The Relevant Section 35 & Rule 80 uses the Expression Financial Year & also no clarification from govt in this regard its better to compute Turnover from 1/4/2017 to avoid any kind of default