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Lock, block and limit your credit card.

Lock your card with the CommBank app or via NetBank.

Enjoy extra security at your fingertips

Lock, block, limit® is an Australian-first, award-winning security innovation exclusive to CommBank. It gives you the power to control your credit card transactions and enjoy extra security instantly using the CommBank app or NetBank.

LOCK in-store international payments

LOCK international payments

If you’re not shopping on an international website or travelling overseas you can lock international online and in-store payments. Then simply unlock them instantly whenever you need to.

LOCK your card temporarily

LOCK your card temporarily

If you misplace your credit card, you can temporarily lock it while you look for it. Then unlock it when you find it again. 

BLOCK ATM cash advances

BLOCK ATM cash advances

Now you can block ATM cash advances if you don’t want to withdraw cash from your credit card.

LIMIT your spending

LIMIT spend per transaction

Set a limit per transaction, then whenever a purchase is above that limit, it’ll be declined and we’ll alert you. 

Lock your card in 4 simple steps on the CommBank app


Open the CommBank app and tap the cards icon on the home screen.

Logon screen

Log on securely (if you haven’t already).

Swipe to choose the credit card you want

Swipe to choose the credit card you want to lock, then tap to manage your card settings.

Select the lock or limit feature you’d like

Select the lock, block or limit feature you’d like to activate. To temporarily lock your card, tap the 'Lost, stolen or damaged card' button.

Lock your card in 4 simple steps using NetBank

Log on to NetBank.

Step 3

Select 'Card Settings' to lock international payments, limit spend or block ATM cash advances or “Lost, stolen or damaged cards” if you want to temporarily lock your card.

Step 2

Click the “More” tab on the navigation bar.

Step 4

Click 'Manage' and select lock.

Things you should know:

Transactions that are recurring (e.g. direct debits) and transactions not sent to us for authorisation are not locked. Lock and Limits do not apply to purchases made via Tap & Pay set up on an Android device. Other conditions apply. Apple and the Apple logo are trademarks of Apple Inc., registered in the U.S. and other countries. App Store is a service mark of Apple Inc. Android and Google Play are trademarks of Google Inc. MasterCard and the MasterCard brand mark are registered trademarks of MasterCard International Incorporated.