Skip to main content Skip to main navigation
Skip to access and inclusion page Skip to search input

How to add or update your ABN in Online Banking

There’s no need for a branch visit. You can add an Australian Business Number to your profile in Online Banking.

How do I add or edit my ABN online?

Sole traders

  1. Sign in from a PC using your 8-digit customer number and password
  2. Hover over Service and select Preferences
  3. Select Personal details, then in the Australian Business Number (ABN) section select Add or Edit to add or change your ABN
  4. Enter your ABN in the field and select Search. If the information is correct, select Confirm. If we cannot identify your ABN, please call us on 132 142.
 
 

Network businesses

  1. Sign in from a PC using your 8-digit customer number and password. You have to be an Administrator to be able to complete this task
  2. Hover over Administration and select Business settings contact details
  3. In the Registered business details section, select Edit/Add in the ABN line
  4. We will use the Australian Company Number (ACN) we have on our records to fetch your ABN. If the number we provide is correct, select Confirm. If we cannot identify your ABN, please call us on 132 142.

 

What else can I update online?

What if I have more than one Approver for administration tasks?

If your business network only requires one Administrator to perform admin tasks, your new ABN will now be active. However, if your Online Banking is set up to need more than one approval, the required number of extra Approvers will need to:

  1. Sign in to Online Banking on a PC
  2. Select the Approval button near the Sign Out button
  3. Select the Administration tab, where they will see the task pending approval.

 

Will the ABN be applied to my online invoicing?

If you use our Biz Invoice online invoicing tool, the ABN you have added or edited is the one that will appear on the invoices linked to your account in Online Banking. Therefore, it is important that you check and verify that the number provided during the update process is correct.

 

How do I add an ABN and/or TFN when opening a savings account?

When opening a Westpac Business Cash Reserve, Business Cash Reserve Bonus or Business Term Deposit account online:

 

  1. Look out for the Your company details section of the online application form
  2. In the Tax details section, Select tax details for this account
  3. Choose what you want to do from:
  • Use the ABN/TFN I have supplied previously
  • I'll provide my ABN now
  • I'll provide my TFN now
  • I've got an exemption reason
  • I'll skip and provide my ABN/TFN later

 

Then follow the prompts to complete your request(s).

Providing the correct ABN/TFN details will help avoid you being charged withholding tax. If you think you may have supplied the wrong details, you can visit a branch or call Customer Care on 132 032 to correct them.

What do the steps look like?

  1. Sign in from a PC using your 8-digit customer number and password. You have to be an Administrator to be able to complete this task.
  2. Hover over Administration and select Business settings and contact details.
  3. In the Registered business details section, select Edit/Add in the ABN line.
  4. We will use the Australian Company Number (ACN) we have on our records to fetch your ABN. If the number we provide is correct, select Confirm.