I have sold my flat in jul17 for 52 lakh, the total cost of the flat was 39 lakh, i got the possession an year back, however i booked the flat in 2010 and its was delayed at builder end and finally i got it in 2017, please let me know how the tax is calculated for it, will it fall under short term capital gain, but in that case will cost of acquisition apply as per my payments year on year from 2010 to 2017, so though i paid 39 lakh the cost of acquisition will be much higher. How are what are my options to invest if i want to save tax.