A tax return can only be filed ONLINE for FY 15-16 (AY 16-17) and FY 16-17(AY 17-18).
For years prior to FY 2015-16(AY 2016-17), you'll have to file a paper return.

Therefore, for FY 14-15, you need to file a paper return.

This means that you'll need to compute the tax liability, pay any pending taxes and give a written submission to the Assessing Officer in your ward. If you want CA help in calculating your tax liabilities, please have a look here at our tax filing plans https://cleartax.in/services

For FY 2015-2016 (AY 2016-2017) and FY 2016-2017(AY 2017-2018), you can file your return using Cleartax.

Please follow the link given below to file your IT return:

https://help.cleartax.in/hc/en-us/articles/115004475248-How-to-file-ITR-online-