Penalty under sec 271F

Balu (Accounts Officer) (50 Points)

26 June 2012  

My friends started a business as a partnership firm(Registered) during 2010-11. During the F.Y 2010-11 it was operated for 3 months only and earned a net profit (before tax) of Rs 10000. for the assessment year 2011-12 they did not pay any tax and not filed the return. Now they realised and want to file the return (i.e by the end of june'12). what are the interests they have to pay. and also explain the applicability of sec 271F (penalty).  Pls suggest me in this regard.