I deposited income tax at an authorized bank on 31st march 2012 for the AY 2012-2013 under type of payment code 300 (self assessment). But the Banking software didnt accept it, and hence as per the advice of the bank staff i changed to AY 2011-2012, though no tax was due.
Now when i check the FORM 26AS the amount has been credited AY 2011-2012.
1. How can i get the refund?
2. Under what type of payment should i pay income tax for AY 2012-2013"(300)SELF ASSESSMENT TAX or (400)TAX ON REGULAR ASSESSMENT or (100)ADVANCE TAX or the other options as mentioned in challan no 280" for pension recieved during the FY 2011-2012.