How ABN Signal detects changes
ABN Signal pulls a fresh copy of the ABN bulk dataset each week and compares it field by field against the previous week. Four fields are tracked: ABN status, GST registration status, entity name, and trading or business names. When any of these differ, the change appears in the relevant feed below.
Each feed groups changes by type — status shifts, GST updates, name activity, and newly registered ABNs — with counts from the current sync window.
Why these changes matter
An ABN status shift may mean a supplier or contractor has stopped operating. Invoicing and input tax credits can be affected when a GST registration changes. Name updates often point to restructures, rebrandings, or data corrections. Anyone running vendor checks, verifying contractors, or monitoring a watchlist will find these feeds useful.
What each entry shows
Every feed entry lists the ABN, what changed, and the date the change was detected. Because changes are based on weekly snapshots, the actual update at the source may have happened at any point during the preceding week.
The guides explain what specific changes mean, and the glossary defines each field.