My Father got LTCG of 90Lack in Augest 2014 by selling of land purchased in 2003-04, can he pay LTCG Tax on 70 Lacks as advance tax or at the time of filing ITR of 2014-15 and put rest of 20lack in CGAS account to buy new recidencial flat? if he can do so what will be last date to open CAGS account for rest of 20Lack.