S. 50C : Capital gains – Full value of consideration – Stamp – Date of agreement -Registration – Value adopted or assessed or assessable by stamp valuation authority on date of agreement is to be taken for purpose of full value of consideration- The proviso to S. 50C was inserted by the Finance Act, 2016 with effect from 1-4-2017 is prospective in nature. [ S. 2(47)(v)45 ]