Choosing a business structure is one of those “boring now, lifesaving later” decisions.
If you’re starting a business with someone else (or planning to bring in co-founders, investors, or even key contractors), the big fork in the road is often: partnership or company?
This (2026 updated) guide walks you through the key differences in plain English - including liability, tax, control, documents you’ll need, and what tends to go wrong when people don’t set things up properly from day one.
And don’t stress - you don’t need to “know the law” to make a smart choice. You just need to understand the practical implications for your situation.
What Is A Partnership Structure (And How Does It Work In NZ)?
A partnership is a business structure where two or more people carry on business together with a view to profit.
In New Zealand, partnerships are governed by partnership law (including the Partnership Act 1908 for traditional partnerships). You can also have a limited partnership under the Limited Partnerships Act 2008, but when most small business owners say “partnership”, they usually mean a standard (general) partnership.
Key Features Of A Partnership
- It’s relatively simple to start - often, you can create a partnership just by agreeing to work together and sharing profits.
- The partners run the business - decisions are made by the partners (either jointly or under whatever decision-making rules you agree to).
- Profits generally flow through to the partners - partners are typically taxed on their share of partnership income.
- Each partner can bind the partnership - meaning one partner’s actions (like signing a contract) can create obligations for all partners.
That last point is where partnerships can feel convenient when things are going well - and risky when they aren’t.
Do You Need A Partnership Agreement?
Technically, a partnership can exist without a written agreement. Practically, that’s where disputes come from.
A properly drafted Partnership Agreement can set clear rules around:
- who contributes what (money, equipment, time, clients, intellectual property)
- how profits and drawings work
- what each partner is responsible for day-to-day
- how decisions are made (unanimous vs majority vs “managing partner”)
- what happens if a partner wants to leave
- how disputes are handled
If you’re thinking “we trust each other, we don’t need that”, that’s often exactly when you should put it in writing - because good agreements are for good relationships.
What Is A Company Structure (And Why Do Businesses Use It)?
A company is a separate legal entity registered with the New Zealand Companies Office. That means the company can:
- enter into contracts in its own name
- own assets (like equipment, stock, vehicles, or intellectual property)
- owe debts
- sue and be sued
When you operate through a company, you’re generally building a structure that’s designed to scale - whether that’s hiring staff, bringing on investors, or selling the business one day.
Directors vs Shareholders (In Plain English)
Companies often have two “layers”:
- Directors: responsible for managing the company and meeting legal duties under the Companies Act 1993.
- Shareholders: owners of the company who hold shares and benefit from profits (usually via dividends or capital growth).
Sometimes the same people are both directors and shareholders - especially in small businesses and startups.
Do You Need A Constitution Or Shareholders Agreement?
You don’t always have to adopt a constitution, but it can be very helpful, especially when there’s more than one shareholder or you plan to bring more people in later.
A Company Constitution sets internal rules for how the company operates (things like share transfers, director appointment rules, meetings, and certain decision thresholds).
In many cases, a Shareholders Agreement is just as important (and sometimes more practical), because it usually covers the “real world” relationship issues - like what happens if someone stops pulling their weight, wants to exit, or there’s a deadlock on major decisions.
Partnership vs Company: The Key Differences You Actually Feel Day-To-Day
On paper, partnerships and companies can both operate a successful business. The real difference is where the legal risk and control sits, and how easy it is to change or grow.
1) Liability: Who Is Personally On The Hook?
This is the biggest difference, and the one that surprises people the most.
Partnership: Partners can be personally liable for partnership debts and obligations. That means if the partnership can’t pay, creditors may pursue the partners personally. It’s also common for one partner to be exposed to the actions of another partner (for example, if a partner signs a contract the partnership can’t fulfil).
Company: A company is a separate legal entity. In many cases, shareholders have limited liability - meaning their risk is generally limited to what they’ve invested. However, directors can still be personally liable in certain situations (for example, breaches of directors’ duties, certain health and safety failings, or personal guarantees given to suppliers or landlords).
The takeaway: a company can provide a stronger “buffer” between your business risks and your personal assets, but it’s not a magic shield. It needs to be run properly.
2) Control And Decision-Making
Partnership: Unless your agreement says otherwise, you’ll often need shared decision-making, and major decisions can require everyone’s buy-in. That’s great when you’re aligned - and painful when you’re not.
Company: Control can be more flexible. For example:
- directors can manage day-to-day decisions
- shareholders can vote on “big ticket” matters
- you can structure different share classes (in some cases) to separate ownership and control
This flexibility is a big reason companies are often used for startups and growth businesses.
3) Tax And Accounting (High-Level Only)
Tax depends on your specific circumstances, and you should always talk to an accountant for tailored advice. But at a high level:
- Partnership: profits usually pass through to partners, who pay tax at their own rates.
- Company: the company pays tax on its profits at the company rate, and shareholders may pay tax on dividends (depending on imputation and their personal circumstances).
The “best” tax structure depends on factors like profitability, whether you want to reinvest earnings, and how you plan to pay yourselves (salary vs drawings vs dividends).
4) Bringing In New People (Or Exiting)
Partnership: adding or removing a partner can be messy unless your partnership agreement clearly sets out an entry/exit mechanism. Depending on how it’s structured, a partner leaving can even trigger dissolution of the partnership.
Company: ownership is usually easier to adjust by issuing or transferring shares. It’s also typically easier to:
- bring in investors
- offer employee incentives (like share options)
- sell the business (either via share sale or asset sale)
If you’re already thinking about growth, fundraising, or a future exit, a company structure is often the more “investment-friendly” option.
5) Perception And Commercial Practicalities
This one isn’t strictly legal, but it matters in the real world.
Some suppliers, landlords, lenders, and commercial partners are more familiar with dealing with companies. That can affect things like:
- who signs contracts (an individual partner vs the company)
- whether personal guarantees are requested
- how comfortable counterparties feel extending credit terms
That said, plenty of partnerships operate successfully - especially professional services, family businesses, and smaller ventures where risk is low and the relationship is stable.
What Legal Risks Should You Watch Out For With Each Structure?
Most business structure problems don’t show up on day one.
They show up later - when there’s money on the line, someone wants out, the business gets sued, or a key relationship breaks down.
Common Partnership Risks
- One partner creates liability for everyone (signing deals, taking on debt, making promises to clients).
- No exit plan when someone wants to leave, gets sick, or has a major life change.
- Disputes about effort vs reward (one partner feels they’re doing more but receiving the same profit share).
- Unclear ownership of intellectual property (like branding, software, client databases, or content created during the partnership).
A solid partnership agreement is how you prevent most of these issues from turning into expensive disputes.
Common Company Risks
- Not separating “company money” and personal money (this can create tax, accounting, and legal headaches).
- Not documenting decisions properly (especially if you have multiple directors or shareholders).
- No clear rules for share transfers if a shareholder wants to sell, exits, or a relationship breaks down.
- Directors not understanding their duties - directors must act in the best interests of the company and avoid reckless trading.
Companies are powerful, but they do come with ongoing compliance expectations. If you run the company like it’s “just you” and ignore the governance side, you can accidentally undermine the protection the company structure is meant to give you.
How Do You Choose Between A Partnership And A Company?
If you’re weighing up a partnership vs company structure in New Zealand, it helps to step back and ask a few practical questions.
A Quick Decision Checklist
You might lean towards a partnership if:
- you’re keeping the business small and simple
- you trust your partner(s) and want a lightweight structure
- your commercial risk is relatively low (for example, limited contracts, low debt, low chance of being sued)
- you want a straightforward profit-sharing arrangement
You might lean towards a company if:
- you’re taking on bigger financial risk (loans, leases, significant supplier accounts)
- you’re working with multiple founders and want clearer governance
- you plan to raise capital, bring in investors, or sell in future
- you want better continuity if someone exits
- you want clearer separation between business and personal assets
Don’t Forget The “Next 12 Months” Reality
It’s tempting to choose a structure based on what feels easiest right now.
But it’s usually smarter to choose based on what your business will look like once you’ve:
- signed your first major client or supplier contract
- hired your first employee
- taken out finance or signed a commercial lease
- built a brand people recognise
Those milestones are when legal foundations start to matter a lot more.
If You’re Hiring Staff, The Structure Isn’t The Only Legal Piece
Whether you operate as a partnership or a company, once you hire staff you’ll need to comply with employment law - including proper contracts, policies, and fair processes.
Having a clear Employment Contract in place is one of the simplest ways to protect your business (and set expectations with your team) from day one.
If You Collect Customer Data, Privacy Still Applies
Your business structure doesn’t change the fact that if you collect personal information (like names, emails, addresses, booking details, or health information), you need to think about your obligations under the Privacy Act 2020.
In many cases, having a fit-for-purpose Privacy Policy is a key part of staying transparent with customers and setting internal rules around data handling.
What Legal Documents Should You Have In Place Either Way?
It’s easy to focus on the structure and forget the paperwork that makes the structure actually work.
Here are the documents we commonly recommend business owners consider, depending on how you operate.
If You’re In A Partnership
- Partnership Agreement (this is the big one - it can save you if things go sideways)
- Customer contracts / terms (so you’re clear on payment, scope, liability, and timelines)
- Supplier agreements (especially if you rely on key suppliers or credit terms)
- IP arrangements (if one partner is bringing pre-existing branding, software, or content into the business)
If your partnership is ending (or one partner is leaving), documenting it properly matters. In many situations, a Partnership Dissolution Agreement helps clarify who keeps what, what happens to clients, and how any final payments are handled.
If You’re Running A Company
- Company Constitution (optional, but often a smart move for multi-owner businesses)
- Shareholders Agreement (especially if you have co-founders, investors, or unequal contributions)
- Director/service arrangements (if directors are paid or have defined roles)
- Customer contracts / website terms (especially if you sell online or offer subscription services)
If you’re bringing in new shareholders or changing ownership, it’s worth getting advice early - share issues and transfers can have lasting effects on control and value.
A Quick Note On DIY Templates
Templates can look tempting, especially when you’re trying to keep startup costs low.
But the problem is that templates don’t know:
- how you and your business partner actually operate
- what industry risks you face
- what you’re contributing (and what you need protected)
- how you want disputes, exits, or deadlocks handled
That’s why it’s often worth getting key documents drafted or reviewed properly - so they actually protect you when you need them to.
Key Takeaways
- A partnership is usually simpler to start, but partners can be personally liable for business debts and for the actions of other partners.
- A company is a separate legal entity, which can provide stronger separation between the business and your personal assets, but it must be run properly and involves ongoing compliance.
- Partnerships rely heavily on a clear partnership agreement to manage profit sharing, decision-making, exits, and dispute resolution.
- Companies often benefit from clear governance documents like a constitution and a shareholders agreement, especially when there are multiple owners or growth plans.
- Choosing the right structure depends on your risk level, growth plans, and how you want control and ownership to work as the business evolves.
- Regardless of structure, you still need to comply with key areas of law like employment and privacy, and have fit-for-purpose contracts in place.
If you’d like help choosing between a partnership and a company structure - or getting your agreements drafted so you’re protected from day one - you can reach us at 0800 002 184 or team@sprintlaw.co.nz for a free, no-obligations chat.
