Disclosure: Some links below are affiliate links. If you buy through them, this site earns a small commission at no extra cost. Editorial recommendations are never influenced by affiliate rates.
In this article
Running a small business in New Zealand is genuinely exciting, until you get a nasty surprise from IRD, a staff dispute lands in the Employment Relations Authority, or a client refuses to pay because you never had a proper contract. None of that is fun, and most of it is avoidable.
This isn't a lecture on corporate law. It's a practical rundown of the legal stuff that actually matters to NZ small business owners in 2026: the structures, contracts, tax obligations, employment rules, and tools that'll keep you out of trouble. Work through it section by section and tick things off as you go.
Business Structure: Sole Trader vs Limited Company
The first real decision, and one too many people make for the wrong reasons.
Sole trader is the simplest setup. No registration required (beyond a business name if you want one), no annual filing fees, and your accounting stays straightforward. The catch is that you and your business are legally the same thing. If the business owes money, you owe money. If someone sues the business, they're suing you personally. Your house, your car, your savings, all on the table.
Your income is taxed at personal rates: 10.5% up to $14,000, 17.5% to $48,000, 30% to $70,000, 33% to $180,000, and 39% above that. Good when you're earning modestly; less good as profits grow.
A limited liability company (LTD) changes everything in terms of risk. The company is a separate legal entity, so your personal assets are generally protected if things go sideways. Companies pay a flat 28% tax on profits, which becomes attractive once you're earning consistently above the $70,000 personal tax threshold.
The trade-off: more admin. You'll need to register the company through the Companies Office, that costs $115 online and takes about 20 minutes. Then there are annual filing obligations, shareholder and director duties under the Companies Act 1993, and slightly more involved bookkeeping. You'll also need to pay yourself a salary (subject to PAYE) or declare dividends, which adds complexity.
Which should you choose? If you're testing an idea or keeping things very small with minimal risk, sole trader works. If you're taking on staff, signing contracts with clients, carrying any meaningful financial risk, or earning decent money, a company is almost always worth the $115. Talk it through with an accountant before you decide, it's a two-hour conversation that pays for itself many times over.
Contracts That Protect You
Handshake deals feel fine until they go wrong. Contracts don't mean you distrust someone, they mean you both understood the same thing from the start.
Employment agreements are not optional. Every employee must have a written agreement before they start work. This is a legal requirement under the Employment Relations Act 2000, full stop. Your agreement needs to cover role and duties, pay and hours, leave entitlements, and any trial period provision (more on that below). The Employment Agreement Builder from business.govt.nz is free and produces a compliant base agreement, a solid starting point that you can customise.
Service contracts matter whenever you're delivering a service and money is changing hands. A good service contract sets out scope of work clearly, payment terms (including what happens when a client is late), who owns any intellectual property created, and how either party can end the relationship. Without one, disputes come down to "he said, she said," and those are messy and expensive.
Client terms and conditions (T&Cs) are often overlooked by small operators. If you're selling products online or running a recurring service, T&Cs establish the rules of the engagement: returns and refunds, liability limits, how disputes are handled, and what law applies. They're particularly useful because you can write them once and apply them to every client relationship without individual negotiation.
A lawyer can draft all of the above, but template documents from reputable NZ providers are a cost-effective starting point for straightforward situations. The key thing is having something in writing that both parties have agreed to.
GST and IRD Obligations
Tax admin trips up more small business owners than almost anything else. Here's what you need to know.
GST registration is compulsory once your turnover reaches $60,000 in any 12-month period. You can register voluntarily before that, which can make sense if your clients are GST-registered and you want to claim back GST on your expenses. GST is currently 15%, charged on top of your prices. You collect it on behalf of IRD and file regular returns.
Filing frequency depends on your turnover: under $500,000, you file every six months; between $500,000 and $24 million, it's every two months; over $24 million, monthly. Most small businesses sit in the six-monthly or two-monthly bracket.
Provisional tax is income tax paid in advance, essentially IRD's way of spreading your tax bill across the year rather than hitting you with one big number at the end. The standard method uses your previous year's income as a guide, but there's an alternative worth knowing about.
AIM (Accounting Income Method) is available to businesses with turnover under $5 million and requires compatible accounting software like Xero or MYOB. Instead of estimating based on last year, AIM calculates provisional tax based on your actual current-year income. You pay tax when you make money, not before, which helps cash flow considerably and avoids the dreaded use-of-money interest charges. If you're not using it, ask your accountant whether it suits your situation.
Keep your IRD number handy, file on time, and register at ird.govt.nz for online access to manage your account.
Intellectual Property Basics
Your business name, logo, and original work have legal protection, but only if you understand how it works.
Copyright is the good news: it's automatic. The moment you write a blog post, design a logo, create a photo, or write code, you own the copyright. No registration, no cost. Under the Copyright Act 1994, that protection lasts for your lifetime plus 50 years. The caveat: if you hire a contractor to create something for your business, ownership depends on your contract. If there's nothing in writing saying you own the work, the contractor likely does. Always include an IP assignment clause when you engage freelancers.
Trademarks are a different matter and require active registration to be truly protected. A trademark gives you exclusive rights to use your brand name, logo, or slogan for the goods and services you've registered it under. Without one, someone else could start using your name and you'd have limited recourse.
Registration is through IPONZ (Intellectual Property Office of New Zealand). The application fee is $100 per class (excluding GST), with a prior search and preliminary advice report available for $50 per class. Most small businesses need one or two classes. Add professional fees if you use a trademark agent (typically 500–1,500 all in for a straightforward single-class application) and you're looking at a manageable investment for something that protects your brand long-term.
Employment Law Fundamentals
If you have even one employee, these rules apply to you.
Minimum wage from 1 April 2026 is 23.95perhour * *foradults.Thestarting − outandtrainingratesare * *19.16 per hour (80% of the adult rate). Starting-out applies to workers aged 16–19 who haven't been employed by you for more than six months. Training wage applies to employees doing industry training of at least 60 credits per year.
Annual leave: every employee who has worked for you for 12 months is entitled to a minimum of four weeks' paid annual leave per year. Holiday pay must be calculated correctly (it can catch people out if you have variable hours or irregular pay); when in doubt, check the Employment New Zealand guidance at employment.govt.nz.
Public holidays: employees who would normally work on a day that falls on a public holiday are entitled to that day off on pay, plus an alternative holiday if they're required to work.
The 90-day trial period is available to all employers as of December 2023, regardless of business size. This allows you to dismiss a new employee within the first 90 days without the risk of a successful personal grievance claim for unjustified dismissal. Critically, the trial period must be: written into the employment agreement and signed before the employee starts work; for a specified period of 90 days or less; and the employee must not have previously been employed by you. Get the wording wrong or present it on day one after they've already started, and the provision is invalid.
When to Get a Solicitor vs DIY
Not everything needs a lawyer. Here's an honest take on where the line sits.
DIY is usually fine for: registering a company via Companies Office, registering for GST on IRD's website, using a standard employment agreement from the Employment Agreement Builder for straightforward roles, reviewing basic template T&Cs for low-risk services, and lodging a trademark application yourself via IPONZ if the goods and services are clear-cut.
Get a solicitor when: you're entering a significant commercial contract; you're buying or selling a business; there's a dispute with an employee, client, or supplier that might escalate; you're dealing with any property lease; your business structure involves multiple shareholders and you need a shareholders' agreement; or anything doesn't feel straightforward and the stakes are high.
NZ solicitor rates typically run 250–450 per hour depending on their experience and firm size. A partner at a large commercial firm in Auckland sits at the top end; a smaller regional practice often comes in closer to the $250 mark. Many will do a free initial 30-minute consultation, take them up on it.
For specific commercial legal work, fixed-fee quotes are increasingly common. A simple shareholder agreement might be 800–2,000; a basic commercial lease review 500–1,200; a custom employment agreement 400–800. Always ask for a fixed fee or an estimate before you engage.
NZ Legal Document Tools
There are some genuinely useful services for small businesses that don't want full solicitor fees for every document:
LegalVision NZ, an online legal services provider with NZ-qualified lawyers. They offer fixed-fee packages for common small business legal needs (employment agreements, contracts, terms of trade, company structuring) and are well regarded for being transparent about pricing upfront. Good option when you want a lawyer's eye on something without paying open-ended hourly rates.
LawStore (lawstore.co.nz), a template document library with NZ-specific legal documents drafted by local lawyers. Useful for getting a professionally drafted starting-point document at a fraction of custom legal fees.
business.govt.nz, the NZ Government's free resource for small business. Covers company registration, employment agreements, tax obligations, licensing, and much more. Start here before you pay for anything.
None of these replace a solicitor for complex matters. But for getting legally sound foundational documents in place without a large upfront legal bill, they're practical options.
Frequently Asked Questions
Do I need a written contract with every client? Legally, a verbal contract can be binding, but proving what was agreed is nearly impossible when things go wrong. A written agreement (even a simple email confirmation of scope and price) is always better. For repeat or higher-value work, a proper service agreement is worth the effort.
Can I run a company with just one director and one shareholder? Yes. A NZ company can be formed with a single director and a single shareholder, they can even be the same person. The sole director must be a NZ resident or an Australian resident with a NZ-resident director also listed.
What happens if I don't register for GST when I should? IRD can register you retrospectively, require you to pay the GST you should have collected (out of your own pocket, since you didn't charge it to clients), and charge penalties and interest. Set a revenue tracking system early.
Is my business name automatically protected? No. Registering a company or business name with the Companies Office gives you some protection against another entity using the exact same name, but it doesn't stop someone trading under a similar name. Only a registered trademark gives you robust protection of your brand identity.
What's the difference between an employee and a contractor? Employees are entitled to leave, minimum wage, KiwiSaver contributions, and other protections. Contractors are generally not. But calling someone a contractor doesn't make them one, if the reality of the working arrangement looks like employment, IRD and the courts may treat them as an employee regardless of what your contract says.
Bottom Line Recommendation
Start by making sure the basics are locked in: the right structure for your circumstances, a written agreement with every employee, GST registration sorted before you hit $60,000, and at least a basic service contract for client work.
From there, protect your brand with a trademark if it matters to the business, get your provisional tax approach right (AIM is worth exploring if your income is variable), and build a relationship with a good local accountant and a solicitor you can call when you need one.
Most legal trouble for small businesses comes from not having anything in writing, not from having imperfect documents. Done is better than perfect, but done properly beats a handshake every time.
This article is general information only and is not legal advice. For your specific situation, consult a NZ solicitor.