New Zealand IRD Validator
Validate NZ Tax Number
Enter a New Zealand Inland Revenue Department number to verify its validity.
About this Validator
This tool validates New Zealand Inland Revenue Department Numbers according to official requirements.
The validator checks if a given IRD number follows the correct structure and verifies its check digit.
This validation only confirms if an IRD number follows the correct format. It does not verify if the number is actually registered with Inland Revenue.
What is an IRD Number (Te Tari Taake Number)?
IRD Number Structure: • 8 or 9 digits total • Last digit is check digit • No letters or special characters • Unique per entity • Common format: XXX-XXX-XXX
Validation Features: • Length verification • Format compliance • Check digit validation • Pattern verification • Numeric validation
Used for: • Tax administration • Business registration • Employment • Social benefits • KiwiSaver • Student loans
Important Notes: • Government issued • Individual/Business ID • Mandatory for tax • Privacy protected • Official identifier
If you need to generate an IRD number for testing purposes, here is a New Zealand IRD Generator