How To Form A Business Partnership In New Zealand

Starting a business with someone else can be exciting. You can combine skills, share the workload, and move faster than you might on your own.

But a business partnership also comes with real legal and financial risk if you don’t set it up properly from day one. In New Zealand, the default rules for partnerships can leave you exposed (including being personally liable for things your partner does).

In this guide, we’ll walk you through the key steps to form a business partnership in New Zealand, what to decide upfront, and which legal documents will help protect you as you grow.

What Is A Business Partnership (And Is It Right For You)?

In simple terms, a business partnership is where two (or more) people run a business together with a view to making profit.

A lot of people assume a partnership only exists if you sign something formal. In reality, partnerships can be created informally through how you operate (for example, you and another person share profits, jointly make decisions, and present yourselves as being “in business together”).

That’s why it’s worth getting clear early on: are you actually forming a partnership, or would another structure be safer?

Common Benefits Of A Business Partnership

• Shared resources and skills (finance, networks, experience, time)
• Shared costs (equipment, rent, marketing, software)
• Faster growth potential by splitting responsibilities
• Built-in accountability when you’re building something from scratch

Common Risks To Watch For

• Personal liability for the partnership’s debts (and potentially your partner’s actions)
• Disputes over money and decision-making if roles aren’t clear
• Different expectations about growth, workload, and timelines
• Messy exits if someone wants to leave (or can’t contribute anymore)

If you’re thinking “we trust each other, we’ll figure it out,” you’re not alone. But trust and clarity aren’t the same thing. Putting the right structure and documents in place doesn’t mean you expect a fight - it means you’re protecting the relationship and the business.

Step 1: Choose The Right Structure For Your Partnership

Before you call yourselves “partners”, decide what legal structure you’re actually using. In New Zealand, people commonly use one of these options:

1) A Standard Partnership (Partnership Law Act 2019)

This is the “classic” business partnership structure. It’s usually simple to start (often no formal registration is required to exist), but the big downside is risk.

In many cases, partners can be personally liable for partnership debts. That means your personal assets (like savings) could be on the line if the partnership can’t pay its bills.

Also, each partner can potentially bind the partnership (for example, by signing contracts in the partnership name), which is great for flexibility but risky if you’re not aligned on decision-making controls.

2) A Limited Partnership (Limited Partnerships Act 2008)

A limited partnership can suit some businesses where you want different roles and risk profiles (for example, one or more people investing capital as “limited partners”, while a “general partner” manages the business).

Generally, limited partners have limited liability up to the amount they contribute, as long as they don’t take part in managing the limited partnership. The general partner typically has broader management powers, but may also take on greater liability exposure.

This structure can be more complex to set up and run than a standard partnership, so it’s important to get advice on whether it fits what you’re trying to achieve.

3) A Company Structure (With Both Of You As Shareholders/Directors)

Instead of operating as a partnership, you can set up a company and both own shares in it (and often both act as directors).

This is a common choice for startups and growing small businesses because:

• the company is a separate legal entity
• liability can be limited (depending on circumstances)
• ownership can be clearly defined through shares
• it can be easier to bring in investors later

If you go down this route, a Company Constitution can help set the internal rules of the company, especially where you want to add extra protections beyond the default Companies Act rules.

4) A Joint Venture (Project-Based Collaboration)

Sometimes you’re not building a long-term business together - you’re collaborating on a specific project (like a build, an event, or a short-term contract). In that case, a joint venture structure may fit better than a traditional partnership.

The key is that the legal documents should match what you’re actually doing. If you’re operating like business partners long-term, treat it seriously and set it up properly.

If you’re unsure which structure is right, it’s worth getting advice early - changing structures later can be expensive, especially once you’ve signed leases, hired staff, or built up assets.

Step 2: Agree On The Commercial Basics (Before You Spend Money)

Once you’ve decided you’re forming a business partnership, the next step is agreeing on the fundamentals. This is the part that’s easy to skip, because it can feel awkward - but it’s exactly what prevents disputes later.

Try to get aligned on these points in writing (even before you draft formal legal documents):

• Ownership: is it 50/50, or does one person own more?
• Capital contributions: who is putting in money (and how much)?
• Roles: who is responsible for what (sales, operations, admin, finance)?
• Decision-making: what decisions require both partners to agree?
• Banking and signing authority: who can sign contracts and approve spending?
• Profit distribution: how and when profits get paid out
• Drawings/salaries: are you taking regular payments from the business?
• Time commitment: full-time vs part-time input from each partner

A useful mindset is to plan for the “stress test” scenarios.

For example: what happens if one partner wants to reinvest profits but the other wants to take cash out? What if one partner stops pulling their weight? What if the business takes on debt? What if the business takes off and you need to hire staff quickly?

These are normal business challenges - they just become much harder when expectations weren’t aligned from the start.

Step 3: Put A Partnership Agreement In Place (So You’re Protected From Day One)

If there’s one thing that turns a good idea into a stable business partnership, it’s having the right agreement in place.

A Partnership Agreement sets out the rules of the relationship between partners, including how the partnership runs day-to-day and what happens when things change.

Without one, you can end up relying on default legal rules (and informal conversations). That’s where misunderstandings and expensive disputes can start.

What Should A Partnership Agreement Cover?

While every partnership is different, most strong agreements deal with:

• Contributions: money, assets, equipment, intellectual property, and services
• Profit and loss sharing: how profits (and losses) are divided
• Partner duties and roles: clear expectations and responsibilities
• Decision-making: what needs unanimous approval vs day-to-day autonomy
• Expenses and reimbursements: what the partnership will cover and approval limits
• Restraints and confidentiality: protecting the business if someone leaves
• Dispute resolution: how disputes are handled before things escalate
• Exit and buyout rules: what happens if a partner wants out (or must leave)
• Death, illness, incapacity: what happens if a partner can’t continue

As your business grows, having these rules written down can be the difference between a smooth decision and a major breakdown in the relationship.

If You’re Running A Company Instead Of A Partnership

If you’ve chosen to operate through a company, you’ll usually want a Shareholders Agreement instead (or as well), which sets out how shareholders manage ownership, decision-making, and exits.

This is especially important if ownership isn’t 50/50, if one founder is contributing more capital, or if you plan to bring in investors later.

Step 4: Sort Out Registrations, Tax, And Compliance Early

Once the structure and agreement are on track, you’ll want to get the practical setup right. This helps you operate confidently and reduces the risk of nasty surprises.

Business Name And Branding Basics

Choosing a name is one thing. Making sure you can actually use it is another.

Depending on how you’re operating, you may need to think about:

• whether you need a company name (if you register a company)
• whether you’ll operate under a trading name
• whether the name could conflict with someone else’s existing brand

If you’re unsure what needs registering, it’s worth reading up on whether trading names need to be registered, particularly if your brand will be a key asset.

IRD, GST, And Record-Keeping

Tax setup isn’t the fun part, but it matters. You’ll likely need to think about:

• IRD numbers and correct tax treatment for the structure you chose
• GST registration (depending on turnover)
• accounting systems to track profit shares, drawings, and expenses
• banking: ideally a separate business account so finances don’t get mixed up

This is general information only and isn’t tax advice. Because tax obligations can vary depending on your structure and circumstances, it’s a good idea to speak with an accountant or tax adviser (or check IRD guidance) before you set things up.

Good record-keeping also supports your legal position. If there’s ever a dispute, clear financial records can be critical.

Key Laws Most Partnerships Need To Know

Even if your partnership is small, you still need to comply with core business laws. Common ones include:

• Fair Trading Act 1986 (making sure advertising and product/service claims aren’t misleading)
• Consumer Guarantees Act 1993 (consumer rights for products and services, where applicable)
• Privacy Act 2020 (how you collect, store, and use personal information)
• Health and Safety at Work Act 2015 (workplace health and safety duties)

If your partnership collects customer data through a website, bookings, email lists, or subscriptions, having a Privacy Policy is often a practical (and sometimes necessary) step to show you’re handling personal information properly.

Step 5: Plan For Growth (Hiring, Contracts, And What Happens If Things Change)

Most partnerships start with good momentum. The issues usually show up later - when you hire staff, take on bigger jobs, sign leases, or one partner’s circumstances change.

Planning now means you’re not scrambling later.

Hiring Your First Employee

If your business partnership is growing, you might hire employees sooner than you think. That means you’ll need the right documentation and processes in place (including pay, leave, policies, and performance management).

An Employment Contract is a good starting point, because it sets expectations and protects your business from day one - especially around confidentiality, duties, and termination procedures.

Signing Customers And Suppliers

Many partnership disputes start when one partner signs a big contract the other didn’t fully understand.

As you grow, it’s worth standardising:

• customer terms (what you deliver, payment terms, liability limits, cancellations)
• supplier agreements (pricing, delivery, warranties, returns)
• service agreements (scope, milestones, acceptance criteria, dispute resolution)

Putting clear contract processes in place also makes it easier to scale - because you’re not renegotiating from scratch every time.

What If A Partner Wants To Leave?

This is the scenario most people don’t want to talk about, but it’s one of the most important reasons to set up a strong business partnership structure.

Ask yourselves:

• Can a partner exit at any time, or is there a notice period?
• How is the buyout price calculated?
• Does the departing partner keep any clients or IP?
• What happens to debts and guarantees?
• Does the remaining partner have the right to continue running the business?

These points are exactly what a well-drafted partnership or shareholders agreement is designed to cover. It’s not about being pessimistic - it’s about making sure the business can survive change.

Key Takeaways

• A business partnership can be a great way to start and grow a small business, but you should set up the legal foundations early to avoid disputes and personal risk.
• Before you commit, choose the structure that actually fits your goals (a standard partnership, a limited partnership, a company with shared ownership, or a project-based joint venture).
• Get clear upfront on ownership, contributions, decision-making, and profit distribution - misalignment here is one of the biggest causes of partnership breakdowns.
• A tailored Partnership Agreement (or Shareholders Agreement if you’re using a company) helps protect you from day one, including for exits, disputes, and unexpected changes.
• Make sure your partnership setup considers real-world compliance: consumer law (Fair Trading Act 1986 and Consumer Guarantees Act 1993), privacy (Privacy Act 2020), and health and safety (Health and Safety at Work Act 2015).
• If you’re growing, plan early for hiring staff and signing contracts - using an Employment Contract and clear customer/supplier terms makes your business easier to manage and scale.

If you’d like help setting up your business partnership properly, or you want the right agreement drafted for your situation, you can reach us at 0800 002 184 or team@sprintlaw.co.nz for a free, no-obligations chat.