How to use
- Open the tool and pick an output format if available.
- Click generate to create a fictional value that follows validation rules.
- Copy the result into forms, demos, or automated test suites.
What it's for
Generate Australian Tax File Numbers with a valid checksum.
About the document
A TFN is 8 or 9 digits with a weighted checksum divisible by 11.
Also useful
Need to validate? Try the TFN validator.
FAQ
- Is this a real registered value?
- No. It only follows the check algorithm for testing.
- Does data leave my browser?
- No. Everything runs locally on your device.
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