if a person acquires a property under a "Power of attorney Transaction" by satisfing the conditions of section - 53A of the Transfer Of Property Act, he is deemed as owner of the property, although he may not be the "registered Owner" of the Property.
cnditions of sec.53A of the "Transfer Of Property Act" :-
(i) There is an agreement in writing b/w the purchaser & the seller.
(ii) the purchaser has paid the consideration or he is ready to pay the consideration ( if there is no consideration as in the case of gift, then sec. 53A of the Transfer of Property Act is not applicable).
(iii) The Purchaser has taken the possession of the property..
if all the above 3 conditions are satisified then mr. B is treated as Deemed Owner eventhough he may not be a registered owner of the property. then capital gains will be calculated in the hands of Mr.B
if POA is not for consideration then MR.B is not owner of the property. then, capital gains will be calculated in the hands of the Mr.A.