23 May 2014
ITR of FY 2011-12 cannot be filed now. ITR of FY 2012-13 can be filed upto 31.03.2015, but if taxable income > 2,00,000 for FY 2012-13; penalty of Rs. 5000/- is leviable. If tax is not paid, interest @ 1%pm is payable from 01.08.2013 till date of filing return.
24 May 2014
If income is below 2 lakh, no penalty is levied. File return easily. You will also get interest on refund (for the period excluding the default on your end).