The process of submitting tax returns over the Internet, using tax preparation software that has been pre-approved by the relevant tax authority.

Required documents for Applying E-Filings:- (All copies of documents should be self-attested by the customer)

PAN card
Aadhar card
Bank account details
Income tax E-filing password
Investment details

Process of E-filings:

Register in on line, Log in. (for new)
Enter personal information.
Enter salary details.
Enter deduction details.
Add details of taxes paid.
E-FILE your return.