23 February 2013
The reduction or waiver of interest liability under 234A, 234B and 234C is dealt under a CBDT notification issued on 26 June 2006 - Direct Tax Order No. 400-29-2002 dated 26 June 2006
You may refer to the same for further information.
As a heads up - the assessee is required to file return and pay off the dues before claiming for such reduction or waiver.
23 February 2013
CBDT directed vide order dt 2 June 1994 that a return changed due to order of court, appeal revision of provision, assessment order than interest u/s 234A, 234B and 234C can be waived by the Chief commissioner/Director General subject to condistions: 1 relevant income is disclosed 2 tax to such income has been paid