Visit the Income Tax e-Filing portal: https://www.incometax.gov.in
Click on “Link Aadhaar” or “Link Aadhaar Status”
Enter your PAN number
Enter your Aadhaar number
Enter your name as per Aadhaar
Enter the captcha code
Click “View Link Aadhaar Status” or “Link Aadhaar”
If already linked, the status will show as linked
You can also check Aadhaar-PAN linking through the SMS service if available
Send an SMS in the prescribed format to the official government number
Use the UIDAI or Income Tax portal only for official verification