NZBN Search
A New Zealand Business Number (NZBN) is a unique 13-digit identifier for New Zealand businesses. Searching by NZBN is the most precise way to identify a company, because each NZBN belongs to exactly one business.
What is an NZBN?
The New Zealand Business Number is a unique identifier assigned to businesses and other organisations in New Zealand. It was introduced so that government agencies and businesses can refer to the same entity using one consistent number, rather than relying on names that can be similar or change over time.
All registered companies have an NZBN. Sole traders, partnerships, trusts and other entities can also have one. The NZBN stays the same even if the business changes its name, address or directors.
NZBN vs company number
Companies actually have two unique identifiers, and they are easy to confuse:
| NZBN | Company number | |
|---|---|---|
| What it is | Cross-government business identifier | Identifier assigned at incorporation |
| Format | 13 digits | Numeric, varies in length |
| Who has one | Companies and many other entity types | Registered companies only |
| Where you see it | Invoices, quotes, government systems | Incorporation documents, older filings |
Both identify one specific company. If you have either, use it — an identifier search is always more reliable than a name search.
What can an NZBN search reveal?
An NZBN search can confirm the core identity of a business, including:
- The exact registered name of the entity
- Its status, such as whether the company is still registered
- Its incorporation or registration details
- The company number linked to the NZBN
- The registered address and other recorded details
Because the NZBN is unique, the search removes the guesswork that comes with similar company names. When you order a report from this site, we verify the company's identity against the live register using its NZBN before the report is generated.
How to search by NZBN
Enter the 13-digit number into the company search on this site. If the NZBN is valid and belongs to a registered company, you will go straight to that company's summary, where you can check its status and order a detailed report.
If you do not have the NZBN, search by name instead, then confirm the NZBN on the company's record before relying on the result. Our company lookup guide explains how to confirm you have the right company.
Frequently asked questions
Do all New Zealand businesses have an NZBN?
All registered companies have one. Other entity types, such as sole traders and trusts, can also be assigned an NZBN.
Can two companies share an NZBN?
No. Each NZBN is unique to one entity, which is why NZBN searches are the most precise way to identify a business.
Does an NZBN change if the company changes its name?
No. The NZBN stays the same for the life of the entity, even if the name, address or directors change.
Search for a New Zealand company
Look up any registered New Zealand company by name, NZBN or company number, and order a detailed report generated fresh from the live registers.
Search companies