If you run a business in New Zealand, sooner or later someone will ask for your NZBN. It might be a new client, a supplier, your accountant or a government agency. This guide explains what the NZBN is, whether you already have one, how to get one if you don’t, and whether you actually need it.
The short answer for most small businesses: it’s free, it takes minutes, and it’s worth having.
What is the NZBN?
The New Zealand Business Number (NZBN) is a unique 13-digit number for your business. It is available to every Kiwi business, from self-employed people to large companies. It is set up under the NZBN Act, which has been in force since 2016.
Your NZBN links to a set of core details about your business, such as your trading name, phone number and email. These sit on the public NZBN Register. Anyone can search the register for free. That lets customers, suppliers and agencies check that your business is real and find your current details in one place.
The NZBN is also a Global Location Number (GLN), supplied through GS1 New Zealand. That means it is unique worldwide, not just in New Zealand.
Do you already have one?
It depends on how your business is set up.
You already have an NZBN if you are registered with the Companies Office
Organisations on a Companies Office register are allocated an NZBN automatically. This includes:
- registered companies
- incorporated societies
- charitable trust boards
- limited partnerships
- building societies, credit unions, friendly societies, and industrial and provident societies.
If you set up a limited company, you got an NZBN when the company was registered. You can find it by searching your company name on the NZBN Register or the Companies Office register.
You need to apply if you are a sole trader, partnership or trust
Sole traders (self-employed people), partnerships and trusts are not allocated an NZBN automatically. You have to apply. Some other organisations that aren’t on a Companies Office register can apply too, such as unincorporated charities and schools. If you are a trustee of more than one trust, each trust needs its own NZBN.
To be eligible, you must be currently in business in New Zealand. Under the NZBN Act, that broadly means supplying or buying goods or services (or dealing in land) other than as a consumer or employee. A business can be non-profit or offer things free of charge and still qualify.
What does it cost?
Nothing. Getting an NZBN is free, and so is using it and searching the register. Be wary of any third-party website that offers to “register your NZBN” for a fee. You can do it yourself directly on the official site, nzbn.govt.nz.
How to apply as a sole trader
The process is online and quick. Here are the steps from the NZBN website:
- Check you don’t already have one. Search the NZBN Register first.
- Gather your details. You need the IRD number used by the business. For most sole traders, that is your personal IRD number. You also need proof of identity.
- Get a RealMe login. You need RealMe to create a MyNZBN account. If you already use RealMe for another MBIE service, such as the Companies Office, you can use the same login.
- Set up your MyNZBN account. Use the name on your official ID and agree to the terms of use.
- Complete the sole trader application and verify your identity.
If you use a New Zealand driver licence or passport, most applications are approved straight away and you can start using your NZBN immediately. If you use other ID, such as a birth certificate, citizenship certificate or overseas passport, the review can take up to three days.
Partnerships and trusts apply the same way through MyNZBN but need to provide extra information. These applications are processed within three working days.
An accountant or bookkeeper can also apply on your behalf if they have authority to act for your business.
What is Primary Business Data?
Primary Business Data (PBD) is the set of core details linked to your NZBN. The NZBN website lists fields such as:
- legal entity name and trading names
- trading areas and industry classification
- phone numbers, email addresses and websites
- registered, postal, office, delivery and invoice addresses
- GST number
- Australian Business Number (ABN), if you have one
- Māori Business Identifier.
Some of this data is mandatory and public by law. What applies differs slightly by business structure. For example, companies and limited partnerships always have a public registered address, which can be an accountant’s or lawyer’s address. For most other fields, you choose whether to add them and whether to make them public.
Why keeping it current matters
Your NZBN is only useful if the details behind it are right. The NZBN website suggests making the register your first stop when something changes, such as a new phone number, email or address.
- Fewer forms. Government agencies connected to the register can pick up your updates automatically, so you don’t have to tell each one separately.
- Others stay up to date. Businesses can add you to an NZBN Watchlist and get an email when your details change.
- Trust. When a customer looks you up and the details match your website, it supports the impression that you are a real, active business.
Keep your NZBN details consistent with your website and your Google Business Profile, so customers see the same information wherever they look.
Where the NZBN is useful
Invoicing and dealing with other businesses
Giving clients and suppliers your NZBN means they can pull your correct details from the register instead of typing them in. Some accounting software can store NZBNs against contacts. The NZBN’s free Business-Match service can match your contacts to their NZBNs.
Supplying government
The NZBN website says that if you supply government, or tender for government contracts, you will increasingly be asked for your NZBN. Having one ready makes those processes smoother.
E-invoicing
E-invoicing sends invoices directly between accounting systems, rather than as PDFs by email. The NZBN website describes the NZBN as the identifier that makes sure e-invoices reach the right business. If you give your NZBN to suppliers and your accounting package can accept e-invoices, they can send them straight to you.
Government is moving this way. Under the Government Procurement Rules, agencies that receive more than 2,000 domestic trade invoices a year must be able to receive e-invoices by 1 January 2026. From 1 January 2027, those agencies must require large suppliers to send e-invoices. “Large supplier” here means a business with revenue over $33 million in each of the two previous years, so most small businesses are not caught by that rule. Still, if you invoice government, having your NZBN set up puts you in a good spot.
So, is an NZBN legally required?
Companies and other Companies Office entities have one automatically, so the question doesn’t arise for them.
For sole traders, partnerships and trusts, the official guidance describes the NZBN as something any business can have and is eligible for. Neither the NZBN website nor business.govt.nz says you must have one to trade. In practice it is optional, but a client, agency or platform may ask you for one as a condition of doing business with them.
Given that it’s free and fast, most sole traders are better off getting one now rather than when someone asks.
The NZBN and online directories
Because the NZBN Register is public, other organisations can use it to check a business is real. NZ Webz is one example. For Verified and higher listings, we confirm the business against public New Zealand sources, such as the Companies Office or the NZBN Register, or a matching business email domain. An NZBN isn’t required to list, but it is one way we can confirm a business. Our editorial policy explains the checks, and the pricing page lists what each plan includes.
You can show your NZBN on your website too. Our guide on what to put on a small business website covers where it fits.
Key points
- The NZBN is a free, unique 13-digit number for NZ businesses.
- Companies and other Companies Office entities get one automatically.
- Sole traders, partnerships and trusts apply online at nzbn.govt.nz using RealMe and a MyNZBN account.
- Sole traders need an IRD number and ID. With an NZ driver licence or passport, approval is usually instant.
- Keep your Primary Business Data current. Update the register first when something changes.
- It isn’t stated to be compulsory for sole traders, but clients, government and e-invoicing increasingly use it.
Sources
NZBN: About the NZBN, Applying for an NZBN, Applying for an NZBN if you’re self-employed, Setting up your MyNZBN account, Primary Business Data, NZBN benefits for business and eInvoicing. Business.govt.nz: Registering with government agencies. New Zealand Government Procurement: Rule 44: eInvoicing capability.