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TIN Check Australia


For individuals:

The TFN consists of 8 or 9 digits compiled using a check digit algorithm:

• 999 999 999.

For entities

The TFN consists of 8 or 9 digits compiled using a check digit algorithm (format: 999 999 999).

The ABN consists of 11 digits formed from a 9 digit unique identifier and 2 prefix check digits (format: 99 999 999 999)..

• 99 999 999 999.


Examples:
876 543 210 123 456 782 53 004 085 616 51 824 753 556 004085616