Public Vs Private Companies In Australia: Key Differences

When you’re planning growth, the question of “public and private” isn’t just theoretical - it shapes how you raise capital, govern your company, and manage risk.

For most small businesses in Australia, a proprietary limited company (Pty Ltd) is the default. But as you scale, you’ll likely be weighing the benefits and obligations of staying private versus going public - and what that actually means in practice.

This guide breaks down the differences in plain English, so you can decide what fits your goals now and in the future. We’ll walk through how public and private companies work under Australian law, the pros and cons, key compliance differences, and the legal documents you’ll need whichever path you choose.

What Do “Public” And “Private” Mean Under Australian Law?

In Australia, a “private” company is a proprietary company (Pty Ltd). A “public” company may be listed on the ASX or remain unlisted. Both are separate legal entities regulated by the Corporations Act 2001 (Cth) and the Australian Securities and Investments Commission (ASIC).

Private (Proprietary Limited) Company

• Ownership: Capped at 50 non-employee shareholders.
• Capital raising: Restricted - can’t offer shares to the public (there are limited exemptions).
• Governance: Lighter reporting obligations than public companies; at least one Australian resident director.
• Branding: Company name typically ends with “Pty Ltd”.

Public Company (Listed Or Unlisted)

• Ownership: No cap on shareholder numbers.
• Capital raising: Can offer shares to the public, subject to prospectus/rules; listed companies must also meet exchange rules (e.g. ASX Listing Rules).
• Governance: Heavier disclosure, financial reporting and audit requirements.
• Branding: Company name ends with “Ltd”.

You can be a public company without listing (unlisted public company). This is sometimes used by larger private groups or for specific fundraising or governance reasons. However, most small and medium businesses don’t need this complexity early on.

Which Structure Suits A Small Business?

There’s no one-size-fits-all answer. Your decision should align with how you plan to fund growth, your timelines, and the level of regulatory burden you’re prepared to manage.

At a high level, many startups and growing SMEs choose to incorporate as a proprietary limited company during their early stages, then consider transitioning later if a public pathway makes sense. For a deeper dive into the trade-offs, it can help to compare the public vs private company pros and cons at a glance.

Why Many Small Businesses Start As Private (Pty Ltd)

• Lower compliance costs and simpler administration.
• Control stays concentrated among founders and early investors.
• Easier to move quickly and make decisions without extensive public disclosure.
• Sufficient for angel/seed raises and many growth-stage capital rounds.

When A Public Company Starts To Make Sense

• You’re planning a larger capital raise from a broad investor base.
• You want to prepare for an eventual ASX listing or operate with public-grade governance now.
• You need flexibility around shareholder numbers or specific institutional investor requirements.
• Your brand strategy benefits from the market credibility that can come with public company status.

It’s important to consider whether the additional reporting, audit and disclosure obligations will add value for your stakeholders - or just slow you down at your current stage.

Legal Obligations: How Do Public And Private Companies Differ?

Public and private companies share core obligations (like directors’ duties), but the day-to-day compliance burden differs significantly. Below are the main areas you’ll want to understand as an owner.

Directors And Governance

All companies must have at least one director who ordinarily resides in Australia. If you’re appointing or restructuring your board, make sure you meet the Australian resident director requirements.

Public companies generally need more directors, often including independent directors, and must meet stricter governance expectations (charters, committees, meeting cadence, and policies). As your board matures, decisions should be documented with care; directors can rely on the business judgment rule if they meet its criteria, which is explained under section 180(2) of the Corporations Act.

Reporting, Audit And Disclosure

• Private (Pty Ltd): Smaller proprietary companies may have reduced reporting requirements. Larger proprietary companies (meeting certain thresholds) face increased financial reporting obligations and may require audits.
• Public: Mandatory audited financial reports and more rigorous continuous disclosure (especially if listed). Unlisted public companies still face heavier reporting than proprietary companies.

With greater access to capital comes greater transparency - factor in the time and cost of producing audited accounts and market disclosures when assessing your pathway.

Capital Raising Rules

Private companies can raise funds from sophisticated or professional investors and via specific exemptions, but generally cannot offer shares to the public. Public companies can undertake more open offers (subject to prospectus rules and, if listed, compliance with exchange rules).

If you’re exploring a private round, it’s worth understanding the small-scale and sophisticated investor exemptions in section 708 of the Corporations Act. If you’re moving towards a broader public offer, you’ll need to plan for due diligence, prospectus preparation and ongoing disclosure obligations.

Share Transfers And Liquidity

Private companies can restrict share transfers in their constitution or shareholders’ agreement (e.g., rights of first refusal, pre-emption). This keeps the cap table stable but can reduce liquidity for shareholders.

Public companies (especially listed) offer greater liquidity through market trading, though they also face stricter rules around disclosure and market conduct. If you need to move equity within a private structure, review your options for off-market share transfers and plan the process early to avoid delays.

Execution, Constitution And Board Process

Regardless of being public or private, strong board process and clear governance documents are essential. Know how to execute documents correctly - companies can sign under section 127 by two directors, a director and company secretary, or a sole director/secretary (if applicable), depending on your structure and constitution.

Your internal rules matter, too. A tailored Company Constitution can set out share classes, transfer rules, meeting procedures and decision-making powers. Public companies typically adopt more detailed constitutions to reflect their obligations and shareholder base.

Planning For Growth: Staying Private Or Going Public?

Most businesses don’t jump straight from startup to IPO. Instead, there’s a spectrum of growth options - each with different legal and operational implications.

Staying Private With Sophisticated Rounds

Plenty of Australian businesses scale as private companies using exempt offers to sophisticated and professional investors, family offices and funds. This strategy keeps your governance leaner while still accessing substantial capital.

As you bring on more stakeholders, use your cap table and governance documents to protect decision-making and long-term strategy. Well-drafted investor rights and board protocols help prevent deadlocks and protect founder vision.

Employee Ownership Without Going Public

If your goal is to attract and retain top talent (without listing), consider an Employee Share Option Plan (ESOP). Options align incentives, reward performance, and build a strong culture, while keeping control with the board and major shareholders. Your constitution and shareholders’ agreement should integrate with the plan to manage dilution and vesting events.

Becoming A Public Company (Unlisted Or Listed)

You might convert to an unlisted public company to prepare for larger raises or because your investor pool requires it. If you aim for an ASX listing down the track, you’ll need to build “public company muscle” now - robust financial reporting, formal committees, clear policies, and a culture of documentation and disclosure.

Remember, going public is not just a funding event; it’s a long-term operational shift. Budget for audit costs, continuous disclosure processes, investor relations, and board education on market rules.

Essential Documents For Either Structure

Whether you stay private or prepare for the public route, strong contracts and governance documents set you up for success and reduce risk as you grow.

• Shareholders Agreement: Sets the rules between owners - decision-making, share transfers, exit mechanics, dispute resolution, and what happens if a founder leaves.
• Company Constitution: Your company’s rulebook - share classes, voting rights, director powers, meeting procedures, and restrictions on transfers.
• Employee Share Option Plan: Offers options or shares to staff with vesting conditions, exercise rules and leaver provisions.
• Board And Committee Charters: Clarify director responsibilities, decision thresholds, and oversight of audit, risk and remuneration (especially important for public companies).
• Offer Documents (Private Rounds): Term sheets and subscription paperwork that reflect valuation, investor rights and warranties. If you’re inviting broader participation, ensure compliance with the section 708 exemptions.
• Policies And Registers: Conflicts, trading (if listed), whistleblower, privacy and information security - these support compliance and good governance as your headcount and stakeholder base grow.

Well-aligned documents reduce friction when new investors join, when employees exercise options, or when founders plan an exit. They also make due diligence far smoother if you explore a sale, merger or listing.

Step-By-Step: Changing From Private To Public

If you’re considering a transition, here’s a high-level roadmap to help you plan. The specifics will depend on your size, industry and fundraising objectives.

1) Map Your Capital Strategy

Define why you need to be public (unlisted or listed). Is it for a specific investor cohort, a larger raise, liquidity or brand positioning? Your reason should justify the added costs and compliance.

2) Upgrade Governance And Financial Controls

Implement audited reporting, adopt public-grade policies, and establish board committees as needed. Invest in finance and legal functions that can support timely disclosures and high-quality documentation.

3) Refresh Your Constitution And Shareholder Terms

Public companies usually need a more detailed constitution. Review transfer restrictions, meeting processes, director appointments, and alignment with listing rules if ASX is on the horizon. Update your shareholders’ agreement or plan for its retirement if you’re moving to a broader public register.

4) Prepare Offer Documentation

For public offers, plan prospectus due diligence and confirm the transaction structure (e.g., primary raise vs sell-down, cornerstone investors, underwriting). For unlisted public raises, ensure your offer path and investor eligibility match the legal framework.

5) Complete Regulatory Steps

Undertake company type change with ASIC, update registers, and appoint the required directors and officers. If you’ll be listed, prepare for ASX admission requirements, governance disclosures and ongoing reporting systems.

6) Educate Your Team And Stakeholders

Public life is different. Align your executive team on disclosure obligations, media and investor communications, and trading rules. A well-briefed board and management team will protect your reputation and reduce compliance risk.

Practical Tips For Founders Balancing Public And Private Considerations

• Think in phases: Choose the structure that supports the next 18-36 months, but design your documents so you can transition without starting from scratch.
• Control isn’t just equity: Board composition, veto rights and reserved matters protect strategy even if your cap table grows.
• Discipline now pays later: Clean records, consistent board minutes and clear policies speed up investor diligence and keep regulators confident.
• Liquidity is a trade-off: Private structures can protect control but limit exits; public structures may improve liquidity but add cost and scrutiny. Choose consciously.
• Invest where it matters: Legal and financial infrastructure is an asset - it unlocks capital, attracts talent and lowers risk as you scale.

Key Takeaways

• “Public and private” refers to public companies (listed or unlisted) and proprietary limited (Pty Ltd) companies - each with different ownership, fundraising and compliance settings.
• Most small businesses start as a private (Pty Ltd) company for flexibility and lower costs, then assess a public pathway when larger capital or broader ownership becomes necessary.
• Public companies face heavier reporting, audit and disclosure obligations; private companies have restrictions on public offers but can raise capital using exemptions.
• Good governance is essential either way - get your constitution, cap table rules and board processes in order, and execute documents correctly under section 127.
• Plan growth with the right tools: a Shareholders Agreement, Company Constitution, employee equity, and compliant offer documents make investment and exits smoother.
• If you do transition to public, treat it as an operational transformation - upgrade governance, controls and culture to thrive under increased scrutiny.

If you’d like a consultation on company structure and planning your path between public and private, you can reach us at 1800 730 617 or team@sprintlaw.com.au for a free, no-obligations chat.