ITR FILING

You have to submit only acknowledement of return, if you haven't digitally signed your return while online filling of return

Reason...why acknowledgement is required to file after online filling of return?

You have to option:

Ist option: digitally signed your return while online filling and no need to submit any document to dept.

IInd option: Submit signed acknowledgement of online filed return to IT Dept.

You either need to digitally sign or send a signed hard copy of I.T return acknowledgement to bangalore CTC office in case of e-filing of I.T return. This is because only if you sign it (either digitally or on the hard copy) you can authenticate tht the information given by you in the return is true. If you have not authenticated the acknowledgement and latter some problem arises than it becomes easy for u to escape as u r not legally bound by the information given in ITR. So it has been made compulsory to sign ITR either digitally or manually.