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  1. We’ve United: Big Sky Building Society and Australian Unity

We’ve United: Big Sky Building Society and Australian Unity

On the 24th of October 2018 Big Sky Building Society Limited became Australian Unity Bank Limited.

What does this mean for you?

The great news is not much will change!

Automatic payments and debits haven’t changed

Our BSB and your account number hasn't changed so payments into and out of your account are unaffected.

Your cards and cheque books are still valid

We’ll send you new Australian Unity ones when they expire.

Your log in details haven’t changed

You’ll just need to use them to log in to Australian unity internet banking.

Redi ATM’s are no longer free of charge

Instead you’ll be able to use Commonwealth, Westpac and ANZ ATMs free of charge.

Why did Big Sky Building Society change its name?

In 2012 Big Sky Building Society became a part of the Australian Unity family. With our shared commitment to community and delivering award-winning products and services for our customers, it’s only natural that we have decided to become known as one. On 24 October 2018, Big Sky Building Society Limited was renamed Australian Unity Bank Limited, which means we’re still the same legal entity, use the same ABN and continue to be wholly owned by Australian Unity Limited.

What should you do?

We’ve taken care of most of the work but there is a bit of housekeeping that could make the change even easier for you.

Download the Australian Unity Banking App

You’ll no longer be able to use the Big Sky app. So get the Australian Unity Banking app today. Your log in details haven’t changed.

Get the app

Update your bookmarks

You’ll need to log in to Australian Unity internet banking, so make sure you update any bookmarks you’ve saved.

Keep an eye out for Australian Unity Communications

Your statements and any communications like emails or letters we send you will be Australian Unity branded.

We’ve updated our Terms and Conditions

Make sure you read them when you get a chance.

Read more

What will happen to my Big Sky account?

First things first — your Big Sky accounts are still valid and there’s no need to change anything beyond considering the tips listed above.

That said, we have decided to stop offering Big Sky products to new customers and you won’t be able to find information about these on the Australian Unity website the same way you’re used to.

View product information

Where to next?

Log in to internet banking

Use your existing Big Sky account details to log in to Australian Unity internet banking.

Log in

Learn more about Australian Unity

See how Australian Unity helps almost 1 million Australians create a brighter future.

Find out more

Need help?

See our FAQs below or Call +1300 790 740. We're here Mon-Fri 8.30am - 5.30pm AEST. If you're overseas, call +61 3 8682 7666.


  • Why did Big Sky change its name?

    The decision to rename Big Sky Building Society to Australian Unity Bank Limited was made to provide customers with a more consistent banking experience. We wanted a unified brand that clearly represents the wide range of customer centric products and services we offer.

  • Will I be able to use my existing Big Sky credit or debit cards from 24 October?

    Any credit cards or debit cards you have will continue to operate like normal. Once they expire you’ll receive new Australian Unity branded cards and your current PIN(s) will remain the same.

  • Will any of my automatic payments or regular direct debits change as a result of the rename?

    Good news, they will continue to work as they have in the past. Any BSB, account number, credit card number or debit card number you had has not changed. This means credits and debits to/from your account have not change or been disrupted.

  • How will my statements be affected?

    Your statements will now be Australian Unity branded. However the content, layout and delivery method (paper or online) will remain the same.

  • How will this impact my access to internet banking from 24 October?

    You will no longer be able to access Big Sky internet banking. If you visit the Big Sky website you will be redirected to the Australian Unity banking website ( for all your internet banking needs. Your login details remain the same.

  • Will the Mobile Banking App be impacted by the rename?

    You will no longer be able to use the Big Sky Mobile App and need to download the Australian Unity Mobile App. Your login details and PIN code remain the same. However, now you are also be able to see your account number displayed on your account summary page.

  • Why are there different numbers displayed on my account page in the AU Mobile Banking App?

    The Big Sky Mobile Banking App displays your customer number followed by a suffix to differentiate between your different types of accounts (E.g. 12345S1, with 12345 being your customer number and S1 being the account type). The Australian Unity Banking App uses an alternate reference numbers, which are unique nine digit numbers for each of your different account types.

  • Can I change the name of my accounts?

    Yes, simply log into Australian Unity Internet Banking, select “Accounts”, from the drop down list select “Customise”, to personalise your account names “Click here”, select the account you wish to customise, enter your personalised account name then save and finish.

  • Can I download the Australian Unity banking app while overseas?

    No. The Australian Unity mobile banking app is only available for download while you’re in Australia. If you’re planning a trip overseas please consider downloading the app before you travel. Once downloaded you’ll be able to access your accounts and banking from anywhere in the world.

  • What impact will the rediATM changes have on me?

    ​The use of rediATMs is no longer free of charge or included in your transaction fee rebate as of 24 October. If you use a rediATM, you will incur a direct fee from the machine provider. Before you proceed with the transaction you’ll be notified of how much that fee will be, and given an opportunity to cancel your transaction should you not wish to pay the charge. You are able to continue to withdraw free of charge from any Commonwealth Bank, ANZ and Westpac ATM right across Australia. 

  • Can I still use my cheque books?

    You can continue to use your current cheque books to make payments. If you request a replacement after 24 October 2018, you will be issued an Australian Unity cheque book.

  • Can I still post and deposit cheques?

    You can post cheques to us at GPO Box 1801, MELBOURNE, VIC 3001 with instructions for the depositing account. Cheques will take 3 – 5 business days to clear. Please note that 3rd party cheques may only be negotiated at our discretion.

    You can also deposit cheques using your card at an Australia Post Bank@Post outlet. You need to know the PIN associated with the card.  The name on the cheque must match the name of the card, joint payees on cheques cannot be deposited at Australia Post Bank@Post. Australia Post imposes a 7 business day clearance time on cheques.

  • Have our T&Cs changed as a result of the name change?

    As a result of this name change we have updated our terms and conditions documents which have come into effect on 24 October 2018. These documents can be found on our website at