GST on flat sold partly before OC and partly after OC

Dhruv Jain (Practicioner) (200 Points)

12 October 2021  

Assessee is a builder developer and they have made an agreement to sell a Flat before OC on instalments basis. Of which 70 percent of the amount is to be receivable post OC. the client of the assessee is having a contention of not paying GST on the 70 percent as it is payable after OC. 

Is there any section or law to refer so as to understand the correctness of this situation.

A response would be highly appreciated.