04 March 2011
see this link for income tax act http://www.rrfalod.com/OtherpageTheme2.aspx?TYPE=HORIZONTAL&CompanyID=0&PAGENAME=RATES%20OF%20DEPRECIATION_2&Parent=Utilities&Current=Rates%20of%20Depreciation%20Under%20Income%20Tax%20Act
and this for companies act http://www.rrfalod.com/OtherpageTheme2.aspx?TYPE=HORIZONTAL&CompanyID=0&PAGENAME=RATES%20OF%20DEPRECIATION&Parent=Utilities&Current=Rates%20of%20Depreciation%20Under%20Company%20Act