Basics
What is an NZBN?
Updated 2026-06
An NZBN is the New Zealand Business Number, a unique identifier for a business in New Zealand. Companies get one automatically, and sole traders and partnerships can register for one too.
Key facts
- Every registered New Zealand company has an NZBN.
- The NZBN is unique to one business, so it removes confusion over similar names.
- It is separate from a GST number, which relates to tax.
Why it matters for checking a company
When you record the NZBN alongside the legal name, you can be sure you are checking and paying the right entity, even where several businesses use similar names.
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