Hi, There is no provision in Income Tax to add Stamp duty, registration and brokerage while calculating cost of acquisition hence you will have to purely go by the difference between government value and the registration value. There are two exceptions to this rule extract of which is given below:
(x) where any person receives, in any previous year, from any person or persons on or after the 1st day of April, 2017,—
(a) any sum of money, without consideration, the aggregate value of which exceeds fifty thousand rupees, the whole of the aggregate value of such sum;
(b) any immovable property,—
(A) without consideration, the stamp duty value of which exceeds fifty thousand rupees, the stamp duty value of such property;
(B) for a consideration, the stamp duty value of such property as exceeds such consideration, if the amount of such excess is more than the higher of the following amounts, namely:—
(i) the amount of fifty thousand rupees; and
(ii) the amount equal to 13[five] per cent of the consideration
Regards,
Yash Shah