Visit the Income Tax e-Filing portal: https://www.incometax.gov.in/
Click on “Link Aadhaar” under the Quick Links section
Enter your PAN number
Enter your Aadhaar number
Enter your name as per Aadhaar
Enter your mobile number
Click on “Validate”
Enter the OTP received on your mobile number
Submit the request
Check the status of PAN-Aadhaar linking on the portal if needed
Alternatively, send an SMS in the format UIDPAN
Ensure your PAN and Aadhaar details match before linking