An Australian journal of the books

Lodgement, not theatre

BAS and GST

The activity statement is where bookkeeping meets the ATO. These essays walk through registration, mixed supplies, Simpler BAS, due dates and the quiet work of making a BAS match the ledger before anyone presses lodge.

Australian tax documents and a calculator on a desk

Image: Anonymous (Unsplash, via Wikimedia Commons) · CC0

Two-storey heritage shopfront in Goodwood, South Australia

BAS and GST · 28 October 2025

When to register for GST

Most Australian businesses must register at $75,000 of GST turnover, non-profits at $150,000, and taxi or ride-share from the first fare. Here is how to measure the threshold, when voluntary registration helps, and how cancellation actually works.

Read When to register for GST · 11 min