Gst 5% on property

Pradeep gupta (Business) (26 Points)

24 February 2019  

I have booked a flat in Jan 12, 2019 . Builder told me then GST will be 12%. I gave him some amount in cheque. He gave me received but that time we both not made any agreement.

Now Govt reduse GST date 12% to 5%. My question is how much GST applicable on my case 12%or 5% if now I will go for registry and made agreement with builder.