Cost Inflation Index updated: government specifies revised index table, effective for assessment years starting 2018-19 onward. The Central Government specifies the Cost Inflation Index table of index numbers corresponding to financial years (beginning 2001 02 onward) to determine indexed cost for computation of capital gains; the notification comes into force on 1 April 2018 and applies to assessment year 2018 19 and subsequent years, with later notifications inserting additional index figures for subsequent assessment years.