MCA has extended the date for filing Forms 23AC & 23ACA for Non-XBRL Companies for the year commencing on or after 1st April, 2011 from 15.09.2012 to 15.10.2012 without any additional fees or penalty as the new forms after revised Sch VI has not been notified by MCA yet. The Circular in this regard can be downloaded from the link below:

http://www.mca.gov.in/Ministry/pdf/General_Circular_28_2012.pdf