Fellow CA
86871 Points
Joined June 2009
yes, it can be added and yes she will get the benefits from day 1 but there is a problem...If you want to add your sister's name today, it would amount to gift and stamp duty shall have to be paid on the relevant stamp duty value.
now lets say you don't take this route, then you can share the income in any manner you wish to but the taxability of the gains shall be in your and your brother's hands only.