how to block pan card online

You can surrender or cancel an unwanted Permanent Account Number (PAN) card online, typically on the official NSDL or UTIITSL portal. The process involves selecting 'Changes or Correction in existing PAN Data,' filling out the application form, and explicitly mentioning the additional PAN(s) you wish to surrender/cancel. You will need to submit a copy of the card(s) and pay a nominal fee. An acknowledgement number will be generated to track the cancellation status with the Income Tax Department.