ABN Lookup Australia

An Australian Business Number (ABN) is a unique 11-digit identifier that makes it easier for businesses to interact with the Australian Taxation Office (ATO) and other government agencies.

All Australian businesses must have an ABN to:

• Avoid pay as you go (PAYG) tax on payments you receive
• Claim GST credits
• Claim energy grants credits
• Access business activity statement online

Verifying an ABN is important when:

• Hiring contractors or suppliers
• Issuing or receiving tax invoices
• Checking if a business is GST registered
• Verifying business legitimacy
• Completing financial due diligence

Data is sourced from the Australian Business Register (ABR), maintained by the Australian Taxation Office.