What’s The Difference Between Public And Private Companies? (2026 Updated)

When you’re choosing (or reviewing) your business structure, the words public company and private company can sound like they’re just describing who can “see” your business.

But in Australian company law, they mean something much more specific - and the differences can affect how you raise funds, what you must disclose, how you manage ownership, and how much red tape you’ll deal with as you grow.

If you’re a founder, director, investor, or you’re thinking about scaling beyond a typical small business set-up, it’s worth getting clear on how public and private companies actually work in practice.

Below, we’ll walk you through the main differences in plain English, including what “Ltd” and “Pty Ltd” really signal, what changes when you move from private to public, and the legal documents and compliance steps to keep on your radar in 2026.

What Is A Private Company Vs A Public Company In Australia?

In Australia, companies are registered and regulated under the Corporations Act 2001 (Cth), with ASIC (the Australian Securities and Investments Commission) overseeing registrations and compliance.

At a high level:

• A private company is usually a company limited by shares that is not listed on a stock exchange and is generally owned by founders, family members, and/or a smaller group of investors.
• A public company can raise funds from the public (subject to rules) and may be listed on the ASX (though not all public companies are listed). Public companies typically face stricter governance and disclosure obligations.

You’ll often see these reflected in company names:

• “Pty Ltd” (Proprietary Limited) usually means a private company limited by shares.
• “Ltd” usually means a public company limited by shares.

Both are separate legal entities (so they can enter contracts, own assets, and incur debts in their own name), and both can provide limited liability for shareholders. The key differences tend to show up in how ownership works, how money is raised, and what the company must publicly report.

Does “Public Company” Mean Government-Owned?

No - not in this context.

A “public company” under the Corporations Act is not the same thing as a government entity or a company owned by the public sector. It simply describes a company type with specific fundraising and compliance rules.

Key Differences Between Public And Private Companies (What Actually Changes)

Here are the major differences that matter for most business owners and founders.

1) Raising Funds And Bringing In Investors

Private companies typically raise funds privately - for example, from founders, angel investors, venture capital investors, or friends and family. There are still legal rules around fundraising, but the framework is generally more manageable and designed for private investment.

Public companies have the ability to raise funds from the public (and if listed, from the broader market). However, that access to capital usually comes with heavier compliance requirements, particularly around disclosures and governance.

If your growth plan includes large-scale fundraising, a public company structure may become relevant - but it’s not a “default next step” for most SMEs.

2) Shareholder Numbers And Ownership Structure

In practical terms, private companies tend to have a smaller, more controlled shareholder base. That usually makes decision-making faster and keeps ownership “tight”.

Public companies often have (or are designed to accommodate) a larger shareholder base, which can mean:

• more complexity in shareholder communications
• more formal processes for meetings and voting
• more potential for changes in control over time

If you’re thinking about how control can shift as you grow, it can help to understand what “control” means legally (and how it can arise through ownership or voting rights). In some structures, it’s worth keeping an eye on concepts like control under the Corporations Act, especially if you’re bringing in new investors or creating different share classes.

3) Governance And Director Responsibilities (More Formality)

Both private and public companies have directors, and directors of both types owe serious duties under Australian law (for example, to act with care and diligence and in the company’s best interests).

But public companies generally operate under a more formal governance framework. That can include:

• more structured board processes
• greater scrutiny from investors and regulators
• more policies and internal controls
• potential ASX Listing Rules requirements if listed

For many private companies, governance still matters - especially if there are multiple shareholders or you’re taking investment - but you can often tailor your internal rules more flexibly with documents like a Company Constitution and/or shareholder arrangements.

4) Reporting, Disclosure, And Transparency

This is one of the biggest day-to-day differences.

Public companies generally face higher disclosure and reporting obligations. If listed, there are ongoing market disclosure requirements (including continuous disclosure obligations) and increased public scrutiny.

Private companies usually have fewer public-facing disclosure requirements, which is one reason many founders prefer to stay private as long as possible.

That said, “private” doesn’t mean “no compliance”. You still need proper records, director decision-making processes, and the right registrations and notifications with ASIC.

5) Transfers Of Shares And Exits

With a private company, it’s common to have restrictions around how shares can be transferred - for example, requiring board approval or giving existing shareholders a right of first refusal.

This can be a major advantage if you want to keep ownership controlled, but it also means exits (or bringing in new shareholders) require careful paperwork and process. If you’re planning an ownership change, a guide like transferring shares can help you understand what’s involved at a practical level.

Public companies (especially listed ones) usually allow shares to be traded more freely, which can make liquidity and exits easier - but also means ownership can change without the same level of internal gatekeeping.

Pros And Cons: Which One Makes Sense For Your Business?

There’s no single “best” structure. The right option depends on how you’re planning to grow, how much control you want to keep, and how much regulatory complexity you’re prepared to manage.

Why Many Businesses Start As Private Companies

Many Australian businesses start as private companies (often as a “Pty Ltd”) because it offers a practical balance of credibility and flexibility.

Common advantages include:

• More control over ownership (particularly with transfer restrictions)
• Less public disclosure compared to a public company
• Flexible fundraising through private investment rounds
• Clear separation between the business and the owners (limited liability)

For founders and early-stage teams, the private company structure can also make it easier to put clear rules in place around decision-making, exits, and what happens if someone leaves the business. This is often where a Shareholders Agreement becomes a key part of your legal foundation.

Why Some Businesses Choose To Become Public Companies

A public company structure can be attractive where the business has grown to a point where large-scale fundraising (or a listing) is genuinely part of the strategy.

Potential advantages include:

• Access to larger pools of capital (subject to fundraising rules)
• Greater liquidity for shareholders (especially if listed)
• Higher profile and market visibility (which can help with partnerships and recruitment)

However, the trade-off is that public companies often deal with more cost, more compliance, and more scrutiny - so it’s usually a decision made with a clear commercial reason (not just because it “sounds bigger”).

A Quick Reality Check: “Going Public” Isn’t Just An Admin Change

It’s normal to think of becoming a public company as a milestone you tick off once you’re successful.

In reality, shifting from private to public (and especially listing) is usually a major project involving corporate governance, finance, legal due diligence, and ongoing compliance systems.

If you’re weighing up the pros and cons, it can help to read a comparison like public vs private company considerations in a way that’s grounded in how businesses actually operate.

How To Set Up The Right Structure From Day One (And Avoid Future Headaches)

Even if “public vs private” feels like a future problem, the decisions you make now can make a big difference later - especially around ownership, fundraising, and governance.

Start With The End In Mind

Ask yourself (and your co-founders):

• Do we plan to raise money from external investors?
• Do we want different classes of shares (for example, different voting rights)?
• How do we want decision-making to work?
• What happens if a co-founder leaves?
• Do we want to keep ownership tightly controlled?

These questions can influence whether you need a tailored constitution, shareholder arrangements, or specific clauses to protect control and reduce disputes.

Think About How You’ll Sign Documents And Make Decisions

As your company grows, you’ll sign more contracts: leases, supplier agreements, customer terms, employment agreements, funding documents, and more.

It’s important to understand how companies execute documents properly, especially when a contract counterparty wants certainty that your company is bound. Many businesses rely on signing under section 127 of the Corporations Act, and getting the mechanics right can help avoid delays and disputes later. If this is something you deal with often, section 127 signing is worth having on your radar.

If You’re Not A Company Yet, Consider Whether Incorporation Fits

Not every business needs to be a company from the start - many people begin as sole traders or partnerships.

But if you’re planning to bring in investors, hire staff, or take on higher-risk contracts, setting up a company can be a sensible move. If you want support with the process, a Company Set Up can help you get your structure right and register properly, while also thinking through what documents you’ll need to operate smoothly.

What Legal Documents And Compliance Should You Expect?

Whether you operate as a private or public company, strong legal foundations reduce risk and make growth easier. The difference is that public companies tend to have more layers, more formality, and stricter ongoing requirements.

Here are documents and compliance areas that commonly come up.

Core Company Documents

• Company Constitution: This is essentially the rulebook for how your company is run (director powers, shareholder rights, meeting rules, share transfers, and more). Many companies use a tailored Company Constitution to match how they actually operate.
• Shareholders Agreement: This sits alongside (or complements) the constitution and is particularly useful where there are multiple founders or investors, because it can cover practical “what if” scenarios (decision-making, exits, deadlocks). A Shareholders Agreement can be one of the most important documents for private companies planning to scale.

Share Issuance, Transfers, And Ownership Changes

Ownership change is a normal part of growth - new investors come in, early founders exit, employees receive equity incentives, or shares move within a family group.

But these moves need to be documented properly, and often require resolutions, ASIC notifications, and updates to company registers. If you anticipate any ownership changes, it’s worth understanding the legal and practical steps for transferring shares so your cap table stays clean and reliable.

Employment And Contractor Arrangements

Many growing companies (private or public) build teams quickly - and employment missteps can become expensive fast.

Clear, compliant contracts and policies are a big part of protecting your business. Having a proper Employment Contract helps you set expectations around duties, pay, confidentiality, and termination, and it can reduce disputes down the track.

Fundraising And Investor Communications

Fundraising can trigger legal obligations depending on how you’re raising money, who the investors are, and what you’re offering them. Public companies generally have more intensive disclosure requirements, but private companies also need to be careful - especially when issuing shares, creating different share classes, or making statements about future performance.

As a general rule, you’ll want your legal documents, shareholder approvals, and company registers to be tidy before you raise capital. Investors (and their lawyers) will often check these carefully.

Ongoing Governance And Record-Keeping

Both private and public companies need to maintain proper records - including registers and minutes/resolutions - and directors need to understand their duties.

As you grow, it becomes more important to have a repeatable process for decision-making and signing. That’s where governance systems, clear delegation, and knowing how your company executes documents (including section 127 signing) can make your operations smoother.

Key Takeaways

• Private companies (often “Pty Ltd”) usually have a smaller shareholder base, more control over ownership, and fewer public disclosure obligations than public companies.
• Public companies (often “Ltd”) can raise funds from the public and may list on the ASX, but they generally face stricter governance, reporting, and compliance requirements.
• The biggest practical differences are usually fundraising options, disclosure obligations, governance formality, and share transfer flexibility.
• If you want to keep ownership controlled and decision-making efficient, a private company with a tailored Company Constitution and Shareholders Agreement is often the starting point.
• If you’re planning big capital raises or considering listing, it’s important to plan early - “going public” is typically a major legal and governance project, not just a name change.
• Getting your documents, registers, and execution processes right early (including how you sign under section 127) can save significant time and cost as you scale.

If you’d like help choosing between a public and private company structure (or setting up your company the right way), you can reach us at 1800 730 617 or team@sprintlaw.com.au for a free, no-obligations chat.