I Built a Free ABN Checker That Generates Australian Business Profiles From Just an ABN

I’ve been working on FastBusinessAPI, and I recently added a free tool that lets people check an Australian Business Number and start building a structured business profile from it.

The idea is pretty simple:

A lot of Australian business checks still start with one thing: an ABN.

But the workflow around that can still be manual. Someone might check ABN Lookup, copy details into a spreadsheet, confirm GST status, check the entity name, look for registered business names, and then save that information somewhere else.

I wanted to make that process cleaner.