ABN Lookup

Verify any Australian Business Number and check GST registration status instantly.

Search ABN

Enter an 11-digit Australian Business Number to look up business details

Example: 51 824 753 556 (Australian Taxation Office)

Demo Mode

Live ABN lookup coming soon. Currently showing sample data for the example ABNs below.

Try these sample ABNs:

About ABN Lookup

The Australian Business Number (ABN) is a unique 11-digit identifier issued to businesses operating in Australia. You can use this tool to:

  • Verify a business's ABN before paying an invoice
  • Check if a business is registered for GST
  • Confirm business names and entity types
  • Validate contractor and supplier details

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

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Disclaimer: ABN data is sourced from the Australian Business Register. While we strive for accuracy, always verify important business details directly with the ATO or the business in question. TaxRoo is not responsible for any decisions made based on this lookup tool.