Help & support
Securely lock your CommBank Debit Mastercard or your CommBank Business Visa Debit Card when you need to and unlock it again when you don’t. Use it to help minimise your spending while you’re working out the best financial decisions for you.
If you’re not already registered for NetBank, you can register now
We’ll protect you from losses due to unauthorised transactions on personal and business accounts when you take the necessary steps to stay safe online.
Locks don’t apply to transactions that are flagged as recurring (e.g. direct debits) and transactions not sent to us for authorisation. Transactions made using Tap & Pay set up on a compatible smartphone aren’t blocked. Some transactions made in CommBank branches, telephone, online or mobile banking including transfers to other accounts, bill payments, and assisted cash withdrawals are also excluded. Other conditions apply.
Full terms and conditions available on the CommBank app. The CommBank app is free to download however your mobile network provider charges you for accessing data on your phone. Find out about the minimum operating system requirements on the CommBank app page. Terms and conditions are available on the app. NetBank access with NetCode SMS is required.
Mastercard is a registered trademark, and the circles design is a trademark of Mastercard International Incorporated.