AU · AUS
Australia Tax File Number format
Official and reviewed ID format references, with permanently masked examples for copy and QA. This site does not validate identity IDs.
Tax File Number · Permanently masked examples
Data snapshot: Sources and data boundaries
Official public format
Tax File Number
TFN
Regex
^\d{9}$7083729*8
Regex and masked examples are reference only. This page does not validate identity IDs.
Data provenance
Sources
Data snapshot: 2026-10-05