Capital gain account scheme extension

Kumaran Durairaj (15 Points)

17 August 2021  
Dear sir/Madam,
My mother sold her flat in feb 2019 and deposited 20 lakhs in CGAS in mar 2019 for 2 years. We could not invest it yet , can we extend the CGAS account one more year so that she can buy land and construct before feb 2022 to get tax exemption. Please guide me on this. Thanks
(She has not closed the CGAS account though 2 years is over.)