Linking your PAN (Permanent Account Number) card with your Aadhaar card is a mandatory process in India. This linking is done to help prevent tax evasion and to promote transparency in financial transactions. 

Go to the official e-filing website of the Income Tax Department: [https://www.incometaxindiaefiling.gov.in/](https://www.incometaxindiaefiling.gov.in/)

Log in to your e-filing account. If you don’t have an account, you’ll need to register first.

After logging in, you may see a pop-up window asking you to link your Aadhaar. If not, you can find the option under the “Profile Settings” or “Profile” menu.

Enter your Aadhaar number and the Captcha code. Make sure that the details match those on your PAN card.

You’ll receive an OTP (One-Time Password) on your registered mobile number linked with Aadhaar. Enter the OTP for verification.

Once the Aadhaar-PAN linking is successful, you’ll receive a confirmation message.

You can also link your Aadhaar with PAN by sending an SMS in the following format: `UIDPAN <12-digit Aadhaar> <10-character PAN>` to 567678 or 56161.

   Example: `UIDPAN 123456789012 ABCDE1234F`

After sending the SMS, you’ll receive a confirmation message if the linking is successful.

If you prefer the offline method, you can visit a service center authorized by the Income Tax Department to link your Aadhaar with PAN.

– Ensure that the details on your Aadhaar and PAN cards match. If there are discrepancies, you may need to update the information.

– Linking Aadhaar with PAN is essential for filing income tax returns.

– The government may periodically announce updates or changes to the linking process, so it’s advisable to check the official website or contact the Income Tax Department for the latest information.

Please note that the procedures might change, and it’s recommended to check the official Income Tax Department website or contact their helpline for the most recent instructions.