Visit the official website of Income Tax Department -

Open Quick Links section and select Link Aadhaar Status

Enter your PAN and Aadhar card number

Click on 'View Link Aadhaar Status' option

The screen will show you the PAN-Aadhaar link status

If your PAN card is linked to Aadhaar, the screen will show Linked otherwise, it will show the link to link both the cards.

Check Complete Details