AU-Codex is an independent Australian reference site for classification systems that are usually hard to browse cleanly. The project turns official datasets into a faster, more navigable interface with cross-links, search and practical context.
The site exists to make Australian classification systems easier to use without changing the underlying official source logic. It focuses on ANZSIC, ATO BIC, OSCA and ANZSCO because those systems affect real operational decisions in tax, payroll, reporting, HR and immigration-adjacent workflows.
The editorial layer adds hierarchy, context, cross references and practical explanation so the data becomes usable instead of just searchable.
Source data is taken from official publications first. Where the site adds synthesis, that synthesis is clearly editorial and never presented as a substitute for the authority itself.
When there is a conflict between systems or a missing mapping, the page should make that visible rather than hide the gap.
Dmitriy Vyborg is an SEO specialist and editor of informational projects with more than 10 years of experience. He works with content sites and reference materials, helping turn complex topics into clear and useful publications. He also has practical knowledge of programming, SEO and web projects.
In editorial work, Dmitriy focuses on precise wording, clean structure and practical value for readers.
Site materials are prepared as reference publications built on open sources, editorial processing and regular updates to important pages.
The aim is not to restate source tables, but to make the information easier to navigate, compare and use in real workflows.
This site is an independent reference resource. It is not affiliated with, endorsed by, or connected to the ABS, ATO or any Australian Government agency.
Please verify critical classification decisions with the official authority before using them for tax, payroll, licensing, immigration or compliance work.