Defining a Private Company: Essential Guide for Australian Businesses

Thinking about setting up a private company in Australia? Choosing the right structure early can influence your personal risk, tax position, growth options and day‑to‑day operations.

Private companies are a popular choice for startups and growing businesses because they provide limited liability and a professional framework for raising capital and scaling. But what exactly counts as a “private company” under Australian law, and what does it mean for you in practice?

In this guide, we’ll explain what a private company is, how it differs from other structures, the steps to set one up properly, the laws that apply, and the core legal documents to put in place. By the end, you’ll have a clear roadmap for building (and maintaining) a compliant Pty Ltd in Australia.

What Is a Private Company in Australia?

Under Australian law, a private company is called a proprietary company. Most are proprietary companies limited by shares and use “Pty Ltd” in their name.

Put simply, a private company is a separate legal entity from its owners. It can own property, enter contracts and be responsible for its debts. Shareholders’ liability is generally limited to what they’ve invested.

• Separate legal entity: the company, not you personally, enters into contracts and owes debts.
• Limited liability: shareholders’ liability is limited to unpaid amounts on their shares.
• Ownership cap: no more than 50 non‑employee shareholders (employees who hold shares don’t count towards the cap).
• Fundraising restrictions: cannot make public offers of shares; fundraising is limited to private avenues (for example, certain offers to sophisticated or professional investors).
• Governed by the Corporations Act 2001 (Cth) and regulated by ASIC.

Private company vs private business: “Private business” is a broad phrase that can include sole traders and partnerships. “Private company” is a specific, incorporated structure with defined rules and obligations. All private companies are private businesses, but not all private businesses are companies.

Private company vs public company: Public companies have a different (and heavier) compliance profile and may be listed on a securities exchange such as the ASX, but not all public companies are listed. A proprietary (private) company cannot list its shares and cannot raise capital from the general public.

Is a Private Company Right For You?

There’s no one “best” structure - it comes down to your goals, risk profile and growth plans. Here are common reasons founders choose a private company:

• Asset protection: separating personal and business assets reduces your personal exposure to business debts and claims.
• Growth and investment: easier to bring in co‑founders or external investors by issuing shares and setting clear governance rules.
• Professional credibility: “Pty Ltd” can help signal structure and continuity to customers, suppliers and lenders.
• Continuity: the company continues despite changes in ownership or management.
• Tax planning: companies pay a flat company tax rate; get tailored tax advice for your circumstances.

Alternatives include operating as a sole trader or partnership (simpler and cheaper to start) or using a trust structure for ownership. If you’re planning to scale, hire staff, sign significant contracts or seek investment, a company structure is often worth the additional setup and compliance effort.

How To Set Up a Private Company (Step‑By‑Step)

Setting up a proprietary company can be straightforward if you follow a clear process. Here’s a practical roadmap.

1) Map Your Plan And Structure

Start with a simple plan covering what you sell, who you serve, how you’ll operate and the risks to manage. This helps you decide if a company is the right vehicle and what governance you’ll need (for example, multiple founders or investors).

If you’re ready to incorporate, you can engage a lawyer to handle the process or use a compliant service for a smooth company set up.

2) Choose Your Name And Governance Rules

Confirm your proposed company name is available and not too similar to an existing registered name or trade mark. Decide whether you’ll adopt a tailored Company Constitution or rely on the Corporations Act’s replaceable rules (many growing startups prefer a tailored constitution to match their share structure and decision‑making processes).

3) Appoint Directors And Shareholders

A proprietary company must have at least one director who is ordinarily resident in Australia. Ensure your appointments meet the residency and eligibility rules - this is a common setup step that’s easy to get right with upfront checks on resident director requirements.

Identify your shareholders and the initial share allotment. Think about how ownership ties to roles, responsibilities and vesting (if relevant).

4) Decide Your Share Structure

Set how many shares the company will issue, at what price, and whether you’ll create different classes (for example, ordinary vs preference) now or later. If there are multiple founders or early investors, a Shareholders Agreement is strongly recommended to set expectations about decision‑making, exits, new funding and disputes.

5) Register The Company With ASIC

When you lodge your application with ASIC and pay the fee, you’ll receive an Australian Company Number (ACN). Keep copies of consents, your constitution (if you have one) and initial director/shareholder records with your company register.

6) Apply For ABN, TFN And (If Required) GST

After incorporation, obtain an ABN and company TFN. Register for GST if your projected turnover will be $75,000 or more (or earlier by choice). If you’ll employ staff, register for PAYG withholding and set up superannuation processes.

7) Put Core Contracts And Policies In Place

Before trading, prepare the key documents you’ll need to sell to customers, engage staff and contractors, protect confidential information, and operate online. We list the essentials later in this guide so you can launch with confidence.

What Are The Ongoing Obligations For A Private Company?

Companies have continuing compliance requirements. These aren’t difficult once you build them into your routine, but they are important.

• Annual review and solvency: each year ASIC conducts an annual review, you confirm company details, pass (and record) a solvency resolution and pay the review fee. There is no “annual return” in Australia - the annual review has replaced it.
• Keep records up to date: maintain your registers and notify ASIC promptly when details change (for example, officeholders, share issues or transfers, addresses). Many common changes are lodged using the forms covered in ASIC Form 484.
• Financial records: keep accurate financial records that correctly record and explain transactions and the company’s financial position.
• Directors’ duties: directors must act in good faith in the best interests of the company, exercise care and diligence, and avoid improper use of position or information.
• Tax and reporting: lodge BAS and returns on time and meet PAYG and superannuation obligations if you employ staff. Speak with your accountant for tailored tax advice.
• Contracts and policies: review your contracts and internal policies periodically so they keep pace with changes to your business and the law.

What Laws Do Private Companies Need To Follow?

Your obligations will depend on your industry and operations, but most private companies need to be across the following legal areas.

Corporations Law

The Corporations Act 2001 (Cth) sets the rules for how companies are formed and run: director duties, member rights, meetings, record‑keeping, fundraising restrictions and more. ASIC administers and enforces these requirements. Non‑compliance can lead to penalties or director liability, so it’s worth embedding compliance into your regular operations.

Australian Consumer Law (ACL)

If you sell goods or services, the ACL applies to your advertising, pricing, consumer guarantees, refunds and unfair contract terms. Having clear, fair customer terms and a reliable complaints process helps you comply and build trust.

Employment Law

Hiring brings Fair Work obligations - minimum pay and conditions, leave entitlements, workplace policies and safety (WHS). Each staff member should have a tailored Employment Contract that sets out duties, pay, hours, confidentiality and termination terms. Add policies for leave, conduct, and use of devices if relevant.

Privacy And Data Protection

The Privacy Act 1988 (Cth) generally applies to businesses with annual turnover over $3 million, as well as certain small businesses (for example, health service providers, credit reporting bodies, businesses that handle tax file numbers or trade in personal information). If the Act applies to you, you’ll need a compliant Privacy Policy and practices aligned with the Australian Privacy Principles. Even if you’re exempt, adopting good privacy hygiene is a smart move for customer trust.

Intellectual Property

Your brand is an asset. Consider registering your name or logo as a trade mark to help prevent others from using it. If you’re investing in brand recognition, it’s worth protecting with a formal trade mark application and consistent brand use.

Commercial Contracts And Credit

Well‑drafted agreements reduce disputes and set clear expectations with customers, suppliers and partners. If you extend credit or supply high‑value assets, you may also need to think about securing your interests on the PPSR. Getting your terms right early can significantly reduce risk as you grow.

What Legal Documents Does A Private Company Need?

The documents you need will vary by business model, but most private companies benefit from the following foundation set.

• Company Constitution: Your operating rules: share rights, director powers, decision‑making and processes. A tailored constitution provides clarity that replaceable rules rarely match.
• Shareholders Agreement: Sets out how founders and investors make decisions, issue more shares, handle exits and manage disputes. Even close friends benefit from a clear, written agreement.
• Directors Service Agreement: Clarifies the role, responsibilities, remuneration and restraints for executive directors, reducing the chance of internal disputes.
• Employment Contract: For each employee (full‑time, part‑time or casual), covering pay, duties, IP, confidentiality and termination. This pairs well with a staff handbook or core workplace policies.
• Terms Of Trade / Customer Contract: Clear terms for pricing, delivery, performance standards, liability, warranties, cancellations and payment. Strong customer terms help you comply with the ACL and manage risk.
• Website Terms And Conditions: If you operate online, set the rules for site use, acceptable use and limitations of liability to reduce disputes and clarify expectations.
• Privacy Policy: Explains how you collect, use and store personal information in line with the Privacy Act (if it applies) and good practice for customer trust.
• Supply Agreement / Contractor Agreement: Defines service levels, pricing, delivery, IP ownership, confidentiality and liability with your suppliers or independent contractors.
• Non‑Disclosure Agreement (NDA): Protects confidential information when you’re speaking with potential partners, investors, contractors or hires before you have full contracts in place.

Two practical tips as you set these up: keep your documents consistent (for example, your customer terms should align with your privacy commitments), and review them as you change product lines, pricing or processes. If you’d like help tailoring these to your model, we can prepare or review them so they work together from day one.

Where it’s helpful, you can work with our team to prepare or review a Company Constitution, document a robust Shareholders Agreement, set up your Employment Contract suite and publish a compliant Privacy Policy. If you’re still at the formation stage, we can also handle your company set up and registrations end‑to‑end, including appointing a director who meets resident director requirements and planning for future brand protection with a trade mark.

Key Takeaways

• A private company (Pty Ltd) is a separate legal entity with limited liability, a cap of 50 non‑employee shareholders and restrictions on public fundraising.
• Choose a company if you want asset protection, a professional framework for raising capital and continuity beyond the founders.
• To set up, decide your name and governance rules, appoint at least one Australian‑resident director, set your share structure, register with ASIC, and obtain your ABN/TFN (and GST if required).
• Ongoing obligations include the ASIC annual review and solvency resolution, accurate records, prompt lodgements when details change, and meeting tax and Fair Work responsibilities.
• Most companies need clear, tailored documents: a constitution, a shareholders agreement, employment contracts, customer terms, website terms and a privacy policy.
• Compliance with the Corporations Act, the ACL, employment laws, and (where applicable) the Privacy Act is essential from day one.

If you would like a consultation on starting a private company, you can reach us at 1800 730 617 or team@sprintlaw.com.au for a free, no-obligations chat.