We have filed the TDS Returns for the Last 3 Qtrs. of the F.Y.2012-2013. Now we want to revised the Last 3 Qtrs. of the F.Y.2012-13. From the Income Tax persecptive is it admissible to file for the last 3 Qtrs.? And what is last date of deposting the TDS for the month of march 2013 and when same can be filed. Pls. explain. Thanks in advance.