If i've got shares of a new company after demerger, then should i enter buy price as 0

Suppose there is a share A, which was at 170. It demerged and price of A became rs 50 and I got shares of new company B priced at 120. Now in discrepant holdings, should I enter the buy price of B as 0. @siva-reddy

When the stock demerged, a certain amount of book assets and debt etc went to each company. Based on the split of such book value, we can divide our purchases. So the company will (usually) issue a note saying look, we split the book value like this, so this is how you should split your acquisition price.
The split price is your purchase price for the purpose of tax calculations.

No need to do anything, we will handle this case.

The demerger I am referring to was completed 1 yr ago, however no adjustment has been made to buy price in my holdings. @siva-reddy

Can create ticket here with all details, concerned team will reply you.

Could you pls refer to this link and help me calculate the cost of acquisition? @TAXIQ.IN

i know this d-merger ( Raunak singh group /appolo type) and as i understand the cost of acquisition for income tax purpose is zero .however if you are not considering taxation view but profit/loss view the best way is to work as 152.23 minus 59.87 as the cost price of ARTEMAS GLOBAL means 92.36 as per bse traded price data AS CUM SPIN OFF PRICE (friday 24 march 2017 ) and EX SPIN OFF PRICE ( monday 27 march 2017).