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Your Supplier Advocate

Your voice in The Westpac Group, helping you do business with us.

Delivering on our service promise

Westpac’s vision is “to be one of the world’s great service companies, helping our customers, communities and people to prosper and grow”.

In delivering on Westpac’s strategy, the Supplier Advocate recognises the part that our suppliers play in the community. The Supplier Advocate is the voice of suppliers within Westpac for:

  • Registering interest in supplying to Westpac,
  • On boarding new suppliers,
  • Paying valid invoices  within 30 days,
  • Queries or complaints, and
  • Fulfilling Westpac’s payment reporting obligations.

A key responsibility of the Supplier Advocate is to ensure Westpac meets its commitments under the Australian Supplier Payment Code, to which Westpac became a signatory in 2017.

Queries and Complaints

If you have a query with regards to the payment status of your invoice, please contact Payment Enquiry

If you are unhappy with the outcome or you need to escalate a complaint, please contact Supplier Advocacy Please include the following information in your correspondence:

  • Invoice details (invoice number, date, value);
  • Your preferred contact details; and
  • A brief description of your complaint.

New Suppliers

Welcome to The Westpac Group. We are excited to have you on board as a supplier. If this is your first time supplying to us, the Supplier Advocacy team are here to support you on your invoicing and payment journey.

Whistleblower Policy

If your current and former employees have knowledge of, or reason to suspect, any reportable conduct which involves Westpac, and feel you need confidentiality and protection to raise your concern, we encourage you to report it as soon as possible through our dedicated whistleblowing channels. As a whistleblower you can be completely anonymous, or you can identify yourself to those authorised by Westpac to manage reports. You can access the link to our Speak Up reporting system at or call a dedicated 24-hour independent Whistleblower Hotline. The telephone numbers for the 24-hour independent Whistleblower Hotline are set out in the policy. You can view the Speaking Up Policy (PDF 340KB) or search “Speaking Up Policy” at


Broadly, “reportable conduct” under our policy includes any conduct which is dishonest, corrupt, fraudulent or illegal, including any suspected modern slavery or human rights violations, involving Westpac’s operations or supply chain.

What is the optimal payment platform for you?

At Westpac, we have a number of payment platforms. To find the right payment platform for your business, contact Supplier Advocacy