About this API
ABN Lookup is the public search of the Australian Business Register (ABR) — the register of all Australian businesses with an ABN (Australian Business Number). It is the Australian equivalent of Poland's VAT White List: it confirms a counterparty's details and registration status by ABN.
Frequently asked questions
Do I need an API key?
Yes — it requires a free identifier (GUID) obtained by registration. The API also works via JSONP.
What data does this API return?
An Australian business's data by ABN — name, ABN status, entity type, state and GST status.
Can this API be called directly from a browser?
Not easily — key/registration-based authentication requires a server-side call and is not suitable for frontend code visible to visitors (which is why there is no live "Try it" button here).
Who runs this API?
The Australian Business Register (ABR), Australian Taxation Office (ATO). Documentation: abr.business.gov.au.