Public vs Private Companies: What’s The Difference? (2026 Updated)

If you’re starting or growing a business in New Zealand, you’ve probably heard people talk about “public companies” and “private companies” as if they’re completely different worlds.

The tricky part is that the difference isn’t just about size, reputation, or whether you’re “on the stock exchange”. It’s also about how you raise money, who you can offer shares to, what your governance looks like, and what expectations you should plan for from day one.

This 2026 update reflects the current commercial reality: more businesses are raising capital earlier, more founders are using share incentives to attract talent, and investors are expecting clearer governance and documentation. The good news is that once you understand the basics, choosing the right setup becomes much easier.

Let’s break it down in plain English.

What Is A Private Company In New Zealand?

In New Zealand, a private company is the most common type of company structure for startups and SMEs. It’s a company that is not listed on a public stock exchange and generally has a smaller (and more controlled) shareholder base.

A private company can still be a “limited liability” company registered under the Companies Act 1993. That means the company is a separate legal entity, and (usually) the shareholders’ personal liability is limited to what they’ve agreed to pay for their shares.

Why Most Small Businesses Start As A Private Company

For many founders, a private company hits the sweet spot between credibility, flexibility, and protection. You can:

• separate your personal assets from business liabilities (in most cases);
• bring in co-founders or investors by issuing shares;
• set clear governance rules for decision-making; and
• sell the business more easily later (because ownership is represented by shares).

That said, “private” doesn’t mean informal. If you have multiple owners (or plan to raise money), your internal documents matter a lot.

For example, it’s common to put the company’s baseline rules in a Company Constitution and the relationship between shareholders in a Shareholders Agreement (especially around decision-making, exits, and what happens if someone wants to leave).

Key Features Of A Private Company

• Ownership is controlled: shares are typically held by founders, employees, and a smaller group of investors.
• Shares aren’t offered to the general public: fundraising is usually done privately (for example, to known investors).
• Less public scrutiny: you’re still regulated, but you’re not subject to the same public-market expectations as a listed entity.
• More flexibility in governance: you can tailor rules through your constitution and shareholder arrangements.

Private companies aren’t “less legitimate” than public companies. Many very large and successful businesses remain private for strategic reasons (control, long-term focus, and avoiding public market disclosure).

What Is A Public Company (And Is It The Same As “Listed”)?

A public company is generally understood as a company that can have a wider shareholder base and (in many contexts) is able to raise funds from the public. Often, when people say “public company”, they mean a company that is listed on a stock exchange (like NZX).

In practical terms, the main difference is this:

• Private companies usually raise capital privately (for example, from founders, angel investors, or private equity).
• Public companies raise capital from a broad pool of investors, often through a public offer and/or via a stock exchange listing.

Public Companies Usually Come With More Regulation

Once a company is truly “public-facing” in how it raises money, there are typically more compliance and disclosure obligations. This can include:

• more formal governance expectations;
• more scrutiny around financial reporting;
• more complex shareholder management;
• additional rules around how shares are offered, marketed, and traded.

In New Zealand, “going public” is not just a branding move. It can change your legal and compliance burden significantly, so it’s usually something businesses do when they’re scaling and need substantial capital (or liquidity for early investors).

Most Businesses Don’t Need To Be Public To Grow

It’s easy to assume that becoming a public company is the “end goal”. But many businesses raise funds, expand internationally, and build valuable brands while staying private.

Often, the better question is: what kind of growth do you want, and what kind of investors (if any) do you want alongside you?

What Are The Practical Differences Between Public And Private Companies?

When you’re weighing up public vs private companies, it helps to focus on how the differences show up in day-to-day business decisions.

1) Fundraising And Who You Can Offer Shares To

Private companies typically raise capital through:

• founder contributions (cash or assets);
• private investment rounds (friends and family, angel investors, VC);
• employee share or option incentives; and
• strategic investors (for example, a supplier or industry partner).

Public companies can raise money from a much broader pool, but that generally comes with heavier regulatory obligations and a bigger “machine” behind the scenes (advisers, disclosure documents, governance processes).

If you’re raising money privately, it’s still important to structure it properly. A messy cap table or unclear shareholder rights can make later rounds much harder than they need to be.

2) Ownership, Control, And Decision-Making

Private companies often have concentrated ownership. That can be a big advantage because you can move quickly and keep strategic control with founders.

But it can also create risk if you don’t document expectations early. Imagine your business grows fast, then a co-founder wants to exit, or an investor pushes for changes - if you don’t have clear rules, you can end up in a dispute at the worst possible time.

This is where having a clear Shareholders Agreement can save you a lot of stress, because it can cover things like:

• who can make which decisions (and when special approvals are required);
• how shares can be transferred;
• what happens if someone stops working in the business; and
• how deadlocks are resolved.

3) Reporting, Transparency, And Expectations

Private companies still have legal obligations (for example, director duties under the Companies Act 1993 and record-keeping requirements). But you typically won’t have the same public-facing disclosure expectations that come with public fundraising or listing.

Public companies tend to operate under a higher level of transparency, because a wide group of shareholders (and the market) expect timely, accurate information.

Even if you’re private, it’s smart to act as though you might be scrutinised later - because you might be. Investors, potential buyers, and banks often do detailed due diligence, and they’ll want to see that your governance and documents are in order.

4) Share Transfers And Liquidity

In a private company, shares aren’t usually easy to sell. That’s not necessarily a bad thing - it can protect the founder group and keep control stable - but it does mean investors will care deeply about exit rights and transfer restrictions.

Public companies (particularly listed ones) usually offer more liquidity, because shares can be traded (subject to market and trading rules). That liquidity is a big reason companies go public, but it’s also one reason public companies face more compliance pressure.

How Do You Decide Whether A Public Or Private Company Is Right For You?

Most businesses start private. The more useful decision is usually not “public vs private today”, but:

“If we stay private for now, are we setting ourselves up properly to grow - and possibly raise capital or sell later?”

Questions To Ask Before You Choose A Path

• Do you actually need external investment? If you can grow through cashflow, staying private can keep things simpler and more controlled.
• How many shareholders do you expect to have? More shareholders usually means more administration and clearer governance needs.
• Do you want to offer equity to employees? If yes, you’ll want to plan your share structure and documents carefully.
• Are you building for a sale, or a long-term family business? Your “end game” affects what structure and governance makes sense.
• How comfortable are you with formal reporting and external scrutiny? Public pathways typically increase both.

A Common “Growth Journey” Scenario

Let’s say you start a software business with two co-founders. At the beginning, you might only need a clean company setup, a basic constitution, and a simple shareholder arrangement.

Then things go well - you hire staff, you start collecting customer data, and you raise capital from investors.

Suddenly, what seemed “optional” becomes essential:

• your customer onboarding terms and sales contracts need to be consistent and enforceable;
• you’ll likely need a Privacy Policy if you collect personal information (which many online businesses do);
• you may need to formalise how shares are issued, transferred, or bought back; and
• you’ll want clear founder and investor rules in your shareholder documentation.

That’s why it’s worth treating “private company” as a serious structure - not just a stepping stone.

What Legal Documents And Compliance Should You Plan For?

Whether you’re private or public, your company’s success usually depends on having the right legal foundations in place.

Here are the documents and compliance areas we often see NZ business owners needing as they grow.

Core Company Documents

• Company constitution: sets internal rules and can help clarify powers, procedures, and share-related mechanics. Many businesses adopt a Company Constitution early to avoid confusion later.
• Shareholders agreement: sets expectations between shareholders and helps prevent disputes as the company evolves. A tailored Shareholders Agreement is especially important once you have multiple owners or investors.
• Founder arrangements (where relevant): if you’re building with others, it’s smart to document roles, vesting, and what happens if someone leaves. (This is one of those areas where “we’ll sort it out later” often backfires.)

Employment And Contractor Documents

Growing companies hire people - and this is where legal risk can creep in quickly if you don’t set expectations properly.

• If you’re employing staff, have an Employment Contract that covers pay, duties, confidentiality, and termination basics.
• If you’re using freelancers or contractors, don’t rely on informal emails. A proper Contractor Agreement can help clarify IP ownership, deliverables, and payment terms.

This matters for both private and public companies, but it becomes even more important as your business becomes more visible, more valuable, and more investable.

Consumer, Marketing, And Online Trading Rules

If you sell products or services to customers, you’ll need to comply with consumer law. Two key laws are:

• Fair Trading Act 1986: you must not mislead customers (including through advertising, pricing claims, or product descriptions).
• Consumer Guarantees Act 1993: certain guarantees automatically apply when selling to consumers (like acceptable quality), and you can’t contract out of them in most consumer transactions.

If your business is online, also think about clear website terms, refund processes, and how you handle customer complaints. These “operational” details often become legal issues when there’s a dispute.

Privacy And Data Protection

Privacy is a big one for modern businesses. If you collect personal information (customer emails, delivery addresses, employee details, analytics identifiers, and so on), the Privacy Act 2020 is relevant.

Practically, you should have:

• a clear Privacy Policy that explains what you collect and why;
• internal processes for data access requests and keeping information secure; and
• contracts with key suppliers/tech providers that reflect how data is handled (where relevant).

Even if you’re a small private company, privacy compliance signals maturity and makes future fundraising (and due diligence) smoother.

How Shares Are Issued, Transferred, Or Restructured

Whether you’re bringing on investors, transferring ownership, or rebalancing founder equity, share changes need to be handled carefully and consistently with your constitution and shareholder arrangements.

For example, if someone is buying in or buying out, a documented process for transferring shares helps avoid disputes about price, timing, and shareholder approvals.

And if you’re moving toward more complex ownership (for example, adding a holding company or multiple classes of shares), it’s worth getting advice early so you don’t accidentally create tax, governance, or investor issues that are expensive to unwind later.

Key Takeaways

• In NZ, most startups and SMEs operate as private companies, meaning ownership is held by a limited group and shares aren’t offered to the general public.
• Public companies generally raise capital from a wider pool of investors and often face higher compliance and disclosure expectations, especially if listed.
• The biggest practical differences between public and private companies usually show up in fundraising options, ownership control, reporting expectations, and share liquidity.
• Even in a private company, having strong governance documents (like a Company Constitution and Shareholders Agreement) can prevent disputes and make future investment or sale much easier.
• As your company grows, you’ll likely need solid supporting documents like an Employment Contract, tailored contractor arrangements, and a compliant Privacy Policy.
• If you’re changing ownership, don’t “wing it” - a clean process for transferring shares helps protect the company and the people involved.

If you’d like help choosing the right structure, setting up your company documents, or preparing for investment, you can reach us at 0800 002 184 or team@sprintlaw.co.nz for a free, no-obligations chat.