Capital Gains from sale of property

Poorna (software engineer) (44 Points)

09 February 2020  

I bought a flat for 44L in 2012. 

Now I am planning to sell it for 90L in 2020.

1) Within what period of the sale, I need to invest in another property so that I dont have to pay capital gain tax?

2) Also, How to calculate the tax liability for this sale?