Visit the Income Tax e-Filing portal: https://www.incometax.gov.in
Click on “Quick Links”
Select “Link Aadhaar Status”
Enter your PAN and Aadhaar number
Click “View Link Aadhaar Status”
Check the status shown on the screen
If linked, it will show that Aadhaar is already linked with PAN
If not linked, it will show that linking is pending or not completed
You can also check status after logging in to the Income Tax portal
Go to “Profile Settings” or “My Profile”
Select “Link Aadhaar Status” to view the result