As per the Income Tax Department notification, income tax returns could be e-filed without linking Aadhaar and PAN till 5 August 2017. The deadline to link PAN and Aadhaar which was initially extended from 31 August 2017 to 31 December 2017, has now been further extended by the CBDT to 31 March 2018 to facilitate the process of linking .
The Income Tax Department has made it easy for taxpayers to link their PAN with Aadhaar with just a 2 step process which does not even require to login or register at the e- filing website. This facility can be used by anyone to link their Aadhaar with PAN.Provide PAN, Aadhaar no. and ENTER NAME EXACTLY AS GIVEN IN AADHAAR CARD