Visit the Income Tax e-Filing portal
Click on “Link Aadhaar Status” under quick links
Enter your PAN and Aadhaar number
Submit the details
Check the displayed status of PAN-Aadhaar linking
Use the SMS service by sending UIDPAN to 567678 or 56161 from your registered mobile number
Call the NSDL/Protean or Income Tax helpline for assistance if needed