Get your NZ Business Number The New Zealand Business Number (NZBN) is a globally unique identifier available to all Kiwi businesses, including sole traders, and it comes with a growing list of benefits. What's the NZBN? The New Zealand Business Number (NZBN) is a unique identifier available to every business in New Zealand. It provides an easy way to identify different businesses, and to share and update business information. New Zealand companies and public sector agencies are automatically given an NZBN. Sole traders, partnerships and trusts can register for one. Information about each business is listed in a secure online register, managed by the Ministry of Business, Innovation and Employment. Why get an NZBN It’s free to get an NZBN. Any business operating in New Zealand can get one – whether you’re a sole trader working from home, or a multi-national organisation. An NZBN: identifies you as a real NZ business should save you time by reducing the number of plac