Cash Tank™ app for iPhone & Android

Want to know if you can grab the tab, get both the jacket and the shoes, or get through the checkout without any ‘declined’ dread – and fast?

Now it's really easy to check what's left in your 'Cash Tank', super fast, when you're on the go.

Cash Tank™ is an app that allows you to check the balance of a pre-selected account anywhere, anytime at the touch of a button - there's no need to login once you've set up the app.

Also now available as a widget on Android phones and the Sony SmartWatch (1&2).

Don't rely on guess work when you need your balance quickly. Put your finger on the gas and download it now:

Cash Tank™ for iPhone from the App Store

Cash Tank from the Android Market


Balance gauge Show/hide $ balance
See visually how full your account is, at a glance. Touch the 'show balance' button to see exactly how much you've got.
One-time secure login Visit Mobile Banking
Once you've done the initial set up, you don't need to login again to get your Cash Tank™ balance Touch the Mobile Banking button to login and transfer funds, etc

How it works

  • Download Cash Tank™ for iPhone from the App Store now.
  • Download Cash Tank™ from the Android Market now.
  • Enter your regular Westpac New Zealand Online Banking login ID and password on the registration screen. (You won’t need to do this again to see your Cash Tank™ balance after this).
  • Select the account that you want the available balance displayed for.
  • Set your own ‘full’ and ‘empty’ settings for your chosen account.
  • Your current balance will be visually represented on the Cash Tank™ gauge against these settings and you can then tap the ‘Available $’ button to display your actual available balance. You can change your “full” and empty” settings at any stage.

You can also use your iPod touch or iPad if you’ve got access to a Wi-Fi network and the App Store for the initial download.

For Cash Tank to work on a Sony SmartWatch, the watch will need to be paired with an Android phone running Android  4.0+ and have the latest version of the Cash Tank app on the phone.

Your Cash Tank™ requests are protected by a certified encrypted secure connection (SSL).

We recommend you always adhere to manufacturer’s software and support to ensure your mobile devices are covered by the latest software and security updates. If you’re connecting via a Wi-Fi, we recommend you use a trusted network.

During the setup process, you will be asked to select which account you wish to have displayed in Cash Tank™.You will be able to select from accounts for which you:

  • are the account holder and sole signatory or
  • have authority to operate in the account alone when there is more than one signatory

Lost phone?

If you lose your iPhone or other mobile device used for Cash Tank™ or it is stolen, please contact Westpac New Zealand immediately on 0800 400 600.

Cash Tank™ is an Electronic Banking Service and is therefore, in addition to these terms and conditions, subject to Westpac’s Electronic Banking Services Terms and Conditions forming part of the General Terms and Conditions.

There are no charges for downloading Cash Tank™ or making Cash Tank™ requests. Internet data charges may be incurred through your mobile service provider – check with your internet service provider or your mobile service provider for more details.

All information submitted by you during the set-up and use of Cash Tank™ will be retained by Westpac and used strictly in accordance with our Privacy terms as set out in our General Terms and Conditions.

Cash Tank™ is only available to Westpac New Zealand customers who are registered for Westpac Online Banking. We reserve the right to modify or withdraw the service at any time. Access is subject to availability and maintenance.

To the extent permitted by law, Westpac will not be responsible to you for any direct or indirect costs, losses or other liabilities resulting from any failure or delay in providing Cash Tank™ via an iPhone, iPad or iPod touch or any loss of access to Cash Tank™ or any malfunction of any equipment or system which supports Cash Tank™, regardless of whether the equipment or system is ours or used by us to provide this Cash Tank™ service.

iPhone, iTunes and iPod touch are trademarks of Apple Inc., registered in the U.S. and other countries. iPad is a trademark of Apple Inc. App Store is a service mark of Apple Inc. Android is a trademark of Google Inc. Westpac Cash Tank and Cash Tank are trade marks of Westpac Banking Corporation.