Here's a step by step guide which can help you to link your Aadhaar and PAN card.
-Spot and click on the new 'Link Aadhaar' hyperlink on the left hand side of the income tax e-filing website.
-Fill details in the respective fields, follow instructions and check the 'Request OTP' option.
-Click the 'Link Aadhaar' button at the bottom of the form.
-"Enter Aadhaar no. and ENTER NAME EXACTLY AS GIVEN IN AADHAAR CARD (avoid spelling mistakes) and submit.
After 1st July, it is mandatory to link your Aadhaar with your PAN and mention it while e-filing income tax returns.
If you have any questions or want help with your E-filing, just reach out to a TruTax Expert.