You can link or "attach" your PAN card to your Aadhaar card through the official Income Tax e-filing portal or via SMS.
- Visit the Income Tax e-filing portal and select the 'Link Aadhaar' option.
- Enter your PAN and Aadhaar number. Note that a mandatory fee (currently ₹1,000) must be paid before submitting the linking request.
- After payment verification, complete the process by entering the OTP sent to your Aadhaar-registered mobile number.
Alternatively, you can link them instantly by sending an SMS in the format 'UIDPAN \[12-digit Aadhaar\] \[10-digit PAN\]' to 567678 or 56161.