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Much like choosing a computer password, you should keep your PIN a secret. You may also want to avoid using a PIN that contains repeating characters or digits, contains digits in sequence, or represents publically researchable information, such as birthday, year of birth, or address.

Your PIN should be between 4 and 12 digits long and it should only contain numbers. A longer PIN number is much harder to guess than a shorter one. If you're travelling or residing overseas, keep in mind that a longer PIN may not be compatible in some overseas locations.

Find out more security tips

With CommBank, creating or changing your PIN is easy.

If you have a personal credit card or Debit MasterCard or a Business Visa Debit Card, here's how you can select a PIN:

  • Log onto NetBank and click on the ‘More’ tab, ‘Security’ and then ‘My Card PIN.’
  • Log onto the CommBank app then tap the card image and choose PIN
  • Visit any branch
  • Call us on 13 2221

If you have a CommBank Corporate charge card, corporate credit card or a business liability business credit card, you can change your PIN by:

  • Calling us on 13 1576 or
  • Visiting a branch

Changing your PIN is easy with CommBank.

  • Log onto NetBank
  • Click on the ‘More’ tab, ‘Security’ and then ‘My Card PIN.’
  • Choose and confirm PIN
  • Get your NetCode SMS, enter your NetCode and click submit to change PIN.

If you're not registered for NetCode SMS, call us on 13 2221.