To file a revised income tax return, visit mytaxcafe.com and create a new account. Select the option to revise the return for a previous financial year, such as 2013-14. Complete all steps, entering the acknowledgment number and original efiling date from the previous return. Review the revised return and e-file it, accepting the terms and conditions. Mytaxcafe provides free guides on topics like income tax efiling, deductions, tax savings, and investments.