How Will Bonus Shares in RIL Affect My Taxes?

Ans: Option a. As mentioned in your question is the way how it would be looked at, from capital gain tax perspective (100 shares at original price & date of purchase & 300 shares at zero price with date of allotment as reference for determining LT or STCG)

Ans: Issuance of bonus share does not invoke any tax liability. It is treated as shares acquired on date of allotment at zero price. Whenever you sell these bonus shares the LT/ST CG liability will come into play based on your holding period. Regarding Jio Finance demerger from RIL, it was a part of RIL business which they have now separated therefore for eg. if your buy price of RIL share is Rs.100 per share then you need to apportion this cost between the two after demerger, in the ratio as communicated by RIL to regulators, and record that as your cost of these shares on the date you purchased original RIL shares. Let's say it is 95 & 5 so your acquisition cost of RIL share shud be shown as 95 and cost of acquiring Jio Finance share as 5. Sounds like lot of calculations but if you deal in shares you must have a habit of physical/digital record keeping. Also LT/ST count for Jio Finance shares will be from the same date as you bought original RIL shares and not the date of demerger. Hope this helps.

Ans: tax treatment will be same as your buy value of bonus share will be zero so zero minus the sell price will be your capital gain