Dear Sir,
Hope you are doing well !!
It is required to deposit such unutilised capital gain in the capital gains account before furnishing return of income but not beyond due date for furnishing return of income
I.e.. on or before 30th November 2020.
if you do not get a chance to invest in a profitable property immediately and still want to save your long-term gains from being taxed, you can invest your capital gains in CGDAS by approaching any public sector bank. The timeframe for the purchase or construction of the property remains unchanged in this case as well. But you can utilise this account momentarily so that you save your gains from being taxed and have more time to finalise a property for reinvestment.