Go to government website here and follow steps given below:
1. Select appropriate type of Return Form
2. Download Return Preparation Software for selected Return Form.
3. Fill your return offline and generate a XML file.
4. Register and create a user id/password
5. Login and click on relevant form on left panel and select "Submit Return"
6. Browse to select XML file and click on "Upload" button
7. On successful upload acknowledgement details would be displayed. Click on "Print" to generate printout of acknowledgement/ITR-V Form.
8. Incase the return is digitally signed, on generation of "Acknowledgement" the Return Filing process gets completed. You may take a printout of the Acknowledgement for your record.
9. Incase the return is not digitally signed, on successful uploading of e-Return, the ITR-V Form would be generated which needs to be printed by the tax payers. This is an acknowledgement cum verification form. A duly signed ITR-V form should be mailed to “Income Tax Department – CPC, Post Bag No - 1, Electronic City Post Office, Bengaluru - 560100, Karnataka, ” BY ORDINARY POST OR SPEED POST ONLY within 120 days of transmitting the data electronically.
ITR-V sent by Registered Post or Courier will not be accepted. No Form ITR-V shall be received in any other office of the Income-tax Department or in any other manner. In case, Form ITR-V, is furnished after the above mentioned period, it will be deemed that the return in respect of which the Form ITR-V has been filed was never furnished and it shall be incumbent on the assessee to electronically re-transmit the data and follow it up by submitting the new Form ITR-V within 120 days. This completes the Return filing process for non-digitally signed Returns.
10. To reset the password, click on the forget password link from the login page. In the password reset page, enter either of the following data :
Enter your secret question and answer which you entered during registration
(OR)
Enter the assessment-year and acknowledgement number of any of the e-returns filed by you since assessment year 2007-08.
Then enter the new password twice and then the text from the image below. Click on Reset Password to reset the password of your user.
11. For any assistance in electronic filing please contact the Public Relations Officer of the local Income Tax Office.