Income tax returns can be easily filed online for free with the help of government's income tax website. This can be done even if you don't have any digital certificate. Follow these simple steps: 1. Go to the income tax website . Income tax india e-filing home page. 2. Register using the above link. The username will always be your PAN number. If it says you have already registered and you haven't done so, then you might have to call the income tax department to get it resolved. This can happen only if you have given the details to another person for filing your income tax return. 3. Once you have registered, download the relevant ITR form. Use this link . Fill the excel file by following the instructions downloaded. This would ask you to enable macros. The instructions will be present as a README file when you download. 4. Validate the sheet and create XML using the macro buttons available in the excel sheet. This will create the xml file in the s...