Below is the step by step procedure of filing Income Tax Return with your digital Signature:

1. Prepare your Income Tax Return and Generate XML.
2. Save XML file in your favourite location [Say Desktop].
3. Connect your digital Signature Certificate - USB Token to your System.
4. If not registered, Register Assessee PAN at http://incometaxindiaefiling.gov.in
5. Login to Income Tax eFiling website.
6. Click on" Submit your Return" for Respective ITR Form..
7. Select the XML file saved on your computer.
8. Click on "Digitally Sign" button and select respective digital signature from USB Token.
9. Click on "Submit" button". It will verify the return and signature, then will show ITR-V with Acknowledgement number.
10. Take the printout of ITR-V and keep it for future reference along with Paper printout of complete return form.

**Digital Signature should be a valid certificate and should be on the name of "Authorised Signatory" of the Return.