ABN Lookup & ABN Checker (Free)
Check if an ABN is valid and look up Australian business names and GST status from the official ABN Lookup.
🔒 Free, no sign-up. Runs in your browser – your details stay on this device.
How to use it
Type an 11-digit ABN to check it, or a business name to search the Australian Business Register.
FAQ
How do I know an ABN is real?
A valid ABN passes a check-digit test (done here instantly). Then confirm it is active and registered for GST on ABN Lookup.
Why check GST registration?
Only GST-registered suppliers can charge GST. Check before paying GST on an invoice.
Disclaimer: Estimates and templates only – not tax, legal or financial advice. Rules change; check the official sources below or ask a qualified adviser before relying on results.
Official sources
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