Guidelines FOR Contractors AND Suppliers
ATO (CWLTH) resource. Rules Mate indexes this as part of the Australian compliance corpus. Click through for the regulator's primary source.
https://www.ato.gov.au/about-ato/ato-tenders-and-procurement/guidelines-for-contractors-and-suppliers
Rules Mate indexes Australian government compliance resources to make them searchable. We link to + summarise; always verify the live source before acting.