Check an Australian Business Number, confirm active status, review GST registration, and open the official ABR record when you need source verification.
Data source
Live results come from the Australian Business Register. If the server-side GUID is not configured, the tool still validates the ABN and links to the official ABR record.
Enter an 11 digit Australian Business Number.
Enter 11 digits to check the ABN.
The tool validates the ABN checksum before contacting ABR, then returns public register details such as entity name, ABN status, entity type, GST status, business location, and registered business names.
ABR web services informationCheck ABNs before paying suppliers, onboarding contractors, issuing tax invoices, or confirming whether GST should appear on an invoice. For formal decisions, rely on the official ABR record linked above.
Open ABN LookupUse these after verifying a business number or GST registration.