12 April 2012
TAN is compulsory while filing the return as well as issuing Form 16. Without mentioning TAN, you would not be able to file the TDS return.
13 April 2012
Form 16 is TDS certificate on salary. In case a salaried employee is not having Form 16, he can ask his company to issue salary certificate and on the basis of salary certificate, return could be filed. For ITR Forms for AY 2012-13, please visit www.incometaxindia.gov.in. The forms have been released.