Gst registration

Currently there is no clarity on this question. Only a final GST Law release could help in this matter. Further I would like to say that if such business is already having a VAT registration, then it has to register under GST irrespective of its turnover.

He can surrender his Registration Number before GST becomes applicable.

You can read it in detail on this link-
https://gstindia.net/topic/registration-under-gst-if-turnover-below-18-lac/