Last date for filing financial statements in XBRL mode for phase-I class of companies (excluding exempted class) has been extended up to 31.12.2011 or within 60 days of their due date of filing, whichever is later. For details kindly see General Circular No:69/2011.
Please note that companies filing after expiry of this extended timeline would be charged additional fee as per their normal 23AC and 23ACA filings. i.e., late fee for such companies would be calculated with effect from original due date of filing.