- GM3 have established a new Payment Gateway for the submission of both Service Claims and Invoices (see above).
- Current POs have now been connected to your account and should be visible in the Payment Gateway. Note: Some historic POs have had to be reissued with new PO numbers. We have contacted affected vendors about this directly.
- For non-ERS suppliers, once you have received an approved Service Entry Sheet or confirmation of a Goods Receipt, you can submit your invoice in the Payment Gateway. Refer to the QRG for steps.
- Submitting via the Payment Gateway will deliver a timelier response and provide real-time status updates on processing. Alternatively, you can email a text-based PDF invoice to gm3invoices@gm3.au. Please ensure there is only 1 invoice per PDF attachment.
- We understand you may need to submit back-dated invoices for goods or services delivered during the system freeze. Please be assured we are processing weekly payment runs, and will aim to expedite payments where possible to align with your standard payment terms.
Supplier Portal
Working Together.
Delivering Results.
Supplier Payment Gateway
Use our online payment gateway to submit service claims and lodge invoices.
Refer to our Quick Reference Guide or watch this video for help with navigating the payment gateway.
Having trouble logging in?
If you are unable to access the payment gateway, please email GM3Supply@gm3.au
Supplier Updates
17 October 2025 – Scheduled Payments feature now available in Ariba
The new Scheduled Payments feature in Ariba offers enhanced visibility into your payment details, including indicative payment dates, amounts due, and current payment status.
To access it, simply log into the Ariba Portal, go to the “Payments” drop-down menu, and select “Scheduled Payments.”
We encourage you to explore this feature to stay up to date with your upcoming payments.
If you have any questions or need assistance, please reach out to our GM³ Accounts Payable Team at gm3accountspayable@gm3.au
Get in contact with us
For any business conduct queries, our Ethics Point confidential reporting process is here gm3.ethicspoint.com/
For any Supply enquiries, please visit the portal or email gm3Supply@gm3.au