Visit the official income tax e-filing website: https://incometaxindiaefiling.gov.in.
Click on the "Link Aadhaar" option under the "Quick Links" section.
Enter your PAN number, Aadhaar number, and name as per Aadhaar.
Check the box to verify if your details match with Aadhaar records.
Enter the CAPTCHA code displayed on the screen and click "Link Aadhaar."
You will receive a confirmation message once the linking is successful.