Last updated: February 2026 | Reading time: 14 minutes

Business Structures in Australia Compared: Which Is Right for You?

Choosing the right business structure is one of the most important decisions you will make when starting or expanding a business in Australia. The structure you select determines your personal liability, how much tax you pay, how much paperwork you deal with, and how easily you can grow or raise capital in the future.

Australia offers six main types of business structures: sole trader, partnership, company (Pty Ltd), trust, registered foreign company (branch), and representative office. Each one is designed for different circumstances, and no single structure is best for everyone.

This guide compares all six business structures in Australia side by side, covering setup costs, tax treatment, compliance obligations, and the specific situations where each structure makes the most sense. Whether you are a local entrepreneur weighing sole trader vs company in Australia, or a foreign company deciding between a branch and a subsidiary, this comparison will help you make an informed decision.

Quick Comparison Table

The table below summarises the key differences across all six types of business structures in Australia. Use it as a quick reference before reading the detailed sections that follow.

Sole Trader

What It Is

A sole trader is the simplest business structure in Australia. There is no legal separation between you and your business — you are the business. You operate under your own name (or a registered business name) and you are personally responsible for everything the business does.

How to Set Up

Setting up as a sole trader is straightforward. You register for an Australian Business Number (ABN) through the Australian Business Register — it is free and can be completed online in minutes. If you want to trade under a name other than your personal name, you also register a business name with ASIC (currently $39 for one year or $92 for three years). That is the full extent of the setup process.

Advantages

• Easiest and cheapest to set up: No incorporation fees, no ASIC registration (beyond optional business name), no constitution or shareholders’ agreement required.
• Full control: You make every decision without needing to consult partners, directors, or shareholders.
• Simple tax: Your business income is reported on your personal tax return. No separate company tax return is needed.
• Minimal compliance: No annual ASIC review, no director obligations, no financial reporting requirements beyond your tax return.
• Easy to wind up: If you decide to stop, you simply cease trading and cancel your ABN.

Disadvantages

• Unlimited personal liability: If your business incurs debts or is sued, your personal assets (home, savings, vehicle) are at risk.
• Harder to raise capital: Investors generally prefer to invest in companies, not sole traders.
• Less credible for larger contracts: Some businesses and government agencies prefer dealing with companies rather than sole traders.
• No perpetual existence: If you are incapacitated or pass away, the business ceases to exist.

Tax Treatment

Your business income is taxed at personal income tax rates, which range from 19% to 45% plus the 2% Medicare levy. You are also required to pay the superannuation guarantee for any employees you hire. If your annual turnover exceeds $75,000, you must register for GST.

The key tax consideration when comparing sole trader vs company in Australia is this: personal tax rates are progressive (increasing with income), while the company tax rate is flat. Once your business income regularly exceeds roughly $100,000 per year, a company structure may offer meaningful tax savings.

Best For

Sole trader is ideal for freelancers, independent consultants, tradespeople, small service businesses, and side ventures. If you are starting small and want to minimise setup costs and paperwork, this is the right starting point. You can always upgrade to a company later as you grow.

Partnership

What It Is

A partnership is a business structure where two or more people (or entities) carry on a business together with a view to making a profit. Like a sole trader, a partnership is not a separate legal entity — it is the partners collectively who own the business and bear responsibility for it.

How to Set Up

You register for an ABN as a partnership (free) and should draft a written partnership agreement. While a partnership agreement is not legally required, it is strongly recommended. Without one, the default rules under your state or territory’s Partnership Act apply — and those defaults may not suit your situation. A good agreement covers profit sharing, decision-making, dispute resolution, admission and exit of partners, and what happens if a partner dies or becomes incapacitated.

Types of Partnerships

• General partnership: All partners share management responsibilities and unlimited liability for the partnership’s debts.
• Limited partnership: Has at least one general partner (with unlimited liability and management authority) and one or more limited partners (whose liability is limited to their capital contribution but who cannot participate in management). Limited partnerships must be registered with the relevant state or territory authority.

Advantages

• Shared resources and expertise: Partners bring different skills, capital, and networks to the business.
• Relatively simple: Less regulatory burden than a company structure.
• Flexible profit sharing: Partners can agree to split profits in whatever proportion suits their contributions, not necessarily equally.
• Tax transparency: The partnership itself does not pay tax, avoiding the issue of double taxation on distributed profits.

Disadvantages

• Unlimited liability: In a general partnership, each partner is jointly and severally liable for all the partnership’s debts — not just their share. One partner’s poor decision can expose every other partner’s personal assets.
• Potential for disputes: Disagreements between partners are common and can be destructive without a clear partnership agreement.
• Lack of perpetuity: The partnership may dissolve when a partner leaves, retires, or dies, unless the agreement provides otherwise.
• Difficulty raising capital: Like sole traders, partnerships cannot issue shares to attract investors.

Tax Treatment

A partnership lodges its own tax return with the ATO, but the partnership itself does not pay tax. Instead, each partner includes their share of the partnership’s net income (or loss) in their personal tax return and pays tax at their personal income tax rate. The partnership agreement determines how income is distributed among partners.

Best For

Partnerships work well for professional services firms (accountants, lawyers, medical practitioners), family businesses, and joint ventures where two or more people want to combine their skills and resources without the formality and cost of a company structure.

Company (Pty Ltd)

What It Is

A proprietary limited company (Pty Ltd) is a separate legal entity incorporated under the Corporations Act 2001. The company has its own legal identity, distinct from its shareholders and directors. It can own property, enter contracts, sue and be sued, and incur debts in its own name. The Pty Ltd is the most common business structure in Australia for businesses beyond the startup phase.

How to Set Up

To register a Pty Ltd company, you lodge an application with ASIC (currently $611 for a standard registration). You will need to choose a company name, prepare a constitution (or adopt the replaceable rules in the Corporations Act), appoint at least one director, and determine the share structure. All directors must obtain a Director Identification Number (Director ID) before appointment.

At least one director must ordinarily reside in Australia. If you are a foreign company and do not have a local director, you may need to engage a professional resident director service.

Advantages

• Limited liability: Shareholders’ liability is limited to the amount unpaid on their shares. Personal assets are generally protected from business debts.
• Lower tax rate: The base rate entity tax rate is 25% for companies with aggregated turnover under $50 million (2026). This is often lower than personal income tax rates for higher earners.
• Easier to raise capital: Companies can issue shares to attract investors, which sole traders and partnerships cannot do.
• Perpetual existence: The company continues to exist regardless of changes to its shareholders or directors.
• Credibility: A Pty Ltd is widely perceived as more established and trustworthy than a sole trader or partnership, particularly for larger contracts and government tenders.
• Transferability: Ownership can be transferred by selling shares, without disrupting the business itself.

Disadvantages

• Higher setup and compliance costs: ASIC registration fees, annual review fees ($329 per year), and professional accounting costs are higher than for sole traders or partnerships.
• More complex tax: Separate company tax return, potential for franking credits, dividend withholding tax, and transfer pricing considerations.
• Director duties: Directors have legal obligations under the Corporations Act, including duties to act in good faith, avoid conflicts of interest, and prevent insolvent trading. Breach of these duties can result in personal penalties.
• Double taxation risk: Company profits are taxed at the company rate, and dividends paid to shareholders may be taxed again (though Australia’s franking system mitigates this for Australian shareholders).

Tax Treatment

Companies pay corporate tax on their taxable income at a flat rate. For the 2025–26 financial year, the rate is 25% for base rate entities (aggregated turnover under $50 million and no more than 80% passive income) or 30% for all other companies. When the company distributes profits to shareholders as dividends, it can attach franking credits that offset the shareholder’s personal tax liability — effectively preventing double taxation for Australian resident shareholders.

Best For

A Pty Ltd is the right choice for businesses planning to grow, raise investment capital, hire employees, or operate at a scale where liability protection matters. It is also the standard structure for Australian subsidiaries of foreign companies. If you are ready to move beyond the sole trader stage, a company offers the professional structure you need.

Learn more about company formation with AusBusinessRegister.

Trust

What It Is

A trust is not a business entity in the traditional sense. It is an arrangement where a trustee holds and manages assets on behalf of beneficiaries according to the terms of a trust deed. Trusts are commonly used in Australia for tax planning, asset protection, and estate planning purposes. While trusts can carry on a business, their primary appeal is the flexibility they offer in distributing income.

Types of Trusts

• Discretionary (family) trust: The trustee has discretion over how income and capital are distributed among beneficiaries. This is the most common type used for small businesses in Australia.
• Unit trust: Beneficiaries hold fixed units (similar to shares) and are entitled to income and capital in proportion to their units. Often used for investment and joint venture purposes.
• Hybrid trust: Combines features of both discretionary and unit trusts, offering flexibility in some areas and fixed entitlements in others.

How to Set Up

Establishing a trust requires a trust deed, which is a legal document that sets out the trust’s terms, the trustee’s powers, and the beneficiaries. A trust deed typically costs between $500 and $1,500 when prepared by a lawyer. You will also need to appoint a trustee — either an individual or a corporate trustee (which requires incorporating a Pty Ltd for $611). The trust then registers for an ABN and TFN.

Advantages

• Tax planning flexibility: In a discretionary trust, the trustee can distribute income to beneficiaries in lower tax brackets each year, potentially reducing the overall tax paid by the family group.
• Asset protection: Assets held in a trust are legally owned by the trustee, not the beneficiaries. This can offer protection from creditors of individual beneficiaries.
• Estate planning: Trusts can be used to manage wealth transfer across generations without the need for probate in some cases.
• Capital gains tax discount: Trusts can distribute capital gains to beneficiaries who are eligible for the 50% CGT discount.

Disadvantages

• Complex to set up and administer: Trust deeds, annual resolutions, distribution statements, and trust tax returns add administrative complexity and cost.
• Higher ongoing accounting costs: Trusts generally require more specialised accounting work than sole traders or even companies.
• Losses cannot be distributed: If the trust makes a loss, that loss is trapped within the trust and cannot be passed to beneficiaries to offset their other income.
• Not suitable for all businesses: Trusts are generally not appropriate for businesses that need to raise external capital or that operate in highly regulated industries.
• Section 100A risk: The ATO has increased scrutiny on trust distributions it considers are part of a “reimbursement agreement” under section 100A of the Income Tax Assessment Act 1936, potentially resulting in the trustee being taxed at the top marginal rate.

Tax Treatment

A trust generally does not pay tax itself. Instead, net income is distributed to beneficiaries, who include it in their own tax returns and pay tax at their personal (or corporate) rates. If the trustee does not distribute all income by 30 June, the undistributed amount is taxed in the trustee’s hands at the top marginal rate (currently 45% plus Medicare levy). This makes timely distribution resolutions essential.

Best For

Trusts are best suited for Australian family businesses, investors, and individuals seeking tax planning flexibility and asset protection. They are frequently used alongside a company structure (where a Pty Ltd acts as the corporate trustee). Trusts are less commonly used by foreign companies entering Australia. Professional tax advice is essential before establishing a trust.

Foreign Company Branch (ARFN)

What It Is

A registered foreign company (branch) is an extension of an overseas company operating in Australia. It is not a separate legal entity. When a foreign company carries on business in Australia without incorporating a local subsidiary, it must register with ASIC under Part 5B.2 of the Corporations Act 2001 and receives an Australian Registered Foreign Number (ARFN) and an Australian Registered Body Number (ARBN).

How to Set Up

The foreign company must lodge ASIC Form 402 along with certified copies of its constitutional documents, a memorandum of directors, and other required particulars. It must appoint a local agent — an individual who ordinarily resides in Australia and who accepts responsibility for the company’s compliance with the Corporations Act. A registered office in Australia is also required.

Requirements

• Local agent (mandatory): Must be an Australian resident individual. The local agent is personally responsible for ensuring the company meets its obligations under Australian law.
• Registered office: A physical address in Australia for official correspondence and service of documents.
• Director ID: Foreign directors may need to obtain a Director Identification Number, depending on their role in Australian operations.
• ASIC compliance: Annual review, financial statement lodgement, and notification of changes to the foreign company’s details.

Advantages

• Maintains parent entity structure: No need to create a separate company or issue shares in a new entity. The branch is simply the foreign company operating in Australia.
• No resident director required: Unlike a Pty Ltd, a branch does not need an Australian resident director — only a local agent.
• Simpler setup than a subsidiary: Fewer formation steps (no constitution, no share issuance, no separate governance structure).
• Direct loss attribution: Depending on home country tax rules, Australian losses may be available to offset against the parent company’s global profits.
• No dividend withholding tax: Profits remitted from the branch to the parent are not subject to Australian dividend withholding tax.

Disadvantages

• Unlimited parent liability: The foreign parent company is fully liable for all of the branch’s obligations, debts, and legal claims in Australia. There is no corporate veil between the branch and the parent.
• Financial reporting complexity: ASIC may require the foreign company to lodge financial statements for its entire global operations, not just the Australian branch.
• Perception issues: Some Australian businesses and government agencies prefer dealing with locally incorporated entities rather than foreign company branches.
• Regulatory exposure: Australian regulators can examine the parent company’s affairs more readily through the branch.

Tax Treatment

The branch is treated as a permanent establishment of the foreign parent in Australia. Australian-sourced income is subject to corporate tax at 30% (or 25% for base rate entities). The key tax distinction from a subsidiary is that branch profits remitted to the parent are not subject to dividend withholding tax, and branch losses may be available to offset against the parent’s income in the home jurisdiction.

Best For

Branch registration is ideal for foreign companies testing the Australian market, running a specific project with a defined timeline, or wanting to maintain a single corporate structure across jurisdictions. It is also suitable when the parent company is comfortable with assuming full liability for Australian operations.

Learn more about branch registration | Local agent services for foreign companies

Representative Office

What It Is

A representative office is an informal presence in Australia used for activities that do not constitute “carrying on business.” Because it is not formally carrying on business, it does not require ASIC registration, an ABN, or compliance with the Corporations Act. However, the activities it can perform are severely restricted.

Permitted Activities

• Market research and information gathering
• Liaison with potential customers, suppliers, and partners
• Promotional and marketing activities
• Quality control and after-sales support
• Purchasing goods or services for the foreign company

Prohibited Activities

• Entering contracts on behalf of the foreign company
• Generating revenue from Australian customers
• Taking orders, concluding sales, or providing paid services
• Any activity that constitutes substantive commercial operations

Advantages

• No registration required: No ASIC registration, no annual returns, no regulatory compliance burden.
• Lowest cost: Minimal setup and ongoing expenses.
• Market testing: Allows a foreign company to explore the Australian market before committing to a formal business presence.
• Easy to establish and close: No formal procedures for setup or shutdown.

Disadvantages

• Cannot generate revenue: The office cannot conduct any business activity that produces income in Australia.
• Grey areas: The boundary between permitted preparatory activities and “carrying on business” is not always clear, creating compliance risk.
• Permanent establishment risk: Activities may inadvertently create a tax permanent establishment, triggering unexpected tax obligations.
• No legal standing: Cannot enter contracts, hold property, or bring legal proceedings in Australia.

Best For

Representative offices are suitable only for foreign companies that want to explore the Australian market without conducting any commercial activities. If your plans involve generating revenue in Australia, you will need to register as either a branch or a subsidiary.

Subsidiary vs Branch: A Detailed Comparison for Foreign Companies

For foreign companies entering the Australian market, the decision typically comes down to two options: registering a branch or incorporating a local subsidiary (Pty Ltd). This comparison is so common — and so consequential — that it deserves focused attention.

When to Choose a Branch

• You are testing the Australian market before making a long-term commitment.
• You have a specific project (construction, consulting engagement) with a defined end date.
• You want Australian losses to flow through to the parent company.
• You cannot easily meet the resident director requirement for a Pty Ltd.
• You prefer to maintain a single corporate structure globally.

When to Choose a Subsidiary

• You are committed to a substantial, long-term presence in Australia.
• You want to limit the parent company’s liability exposure to Australian operations.
• Local credibility matters — customers, partners, and government agencies prefer dealing with Australian companies.
• You plan to raise capital, attract local investors, or pursue government contracts in Australia.
• Your international tax strategy benefits from a separate entity in Australia.

AusBusinessRegister helps foreign companies with both structures. Whether you need branch registration, subsidiary incorporation, local agent services, or a resident director, we handle the entire process.

How to Choose the Right Business Structure

With six options to consider, choosing the right structure can feel overwhelming. The following decision framework will help you narrow down the best fit based on your specific circumstances.

Decision Framework

1. Are you a foreign company expanding into Australia?
   • Yes, testing the market → Branch registration (see our guide for foreign companies)
   • Yes, committed long-term → Subsidiary (Pty Ltd) via company formation
   • Yes, but only for market research → Representative office
2. Are you an individual starting a business alone?
   • Low risk, low revenue → Sole trader
   • Growing revenue, wants liability protection → Company (Pty Ltd)
3. Are there two or more people involved?
   • Simple arrangement, professional services → Partnership
   • Want liability protection and clearer governance → Company (Pty Ltd)
4. Is tax optimisation a primary goal?
   • Family business with multiple income earners → Trust (with professional tax advice)
   • Business earning over $100,000 per year → Company (25% flat rate may save tax compared to personal rates)
5. Do you need liability protection?
   • Yes → Company (Pty Ltd) or trust with corporate trustee
   • Not a concern → Sole trader or partnership may suffice

Regardless of which structure you are leaning towards, it is worth speaking with an accountant or business adviser before making a final decision. The right structure depends on your specific financial situation, industry, growth plans, and risk profile.

Can You Change Your Business Structure Later?

Yes, you can change your business structure, and many businesses do so as they grow. However, changing structures is not a trivial exercise — it involves legal, tax, and administrative steps that should be planned carefully.

Common Transitions

• Sole trader to company: This is the most common transition in Australia. It involves incorporating a new Pty Ltd, transferring assets and contracts to the company, and updating your ABN, GST registration, and bank accounts. You may also need to consider capital gains tax and stamp duty implications on asset transfers.
• Partnership to company: Similar to the sole trader transition but more complex because multiple partners are involved. The partnership dissolves, a new company is formed, and assets are transferred. All partners need to agree on share allocations in the new company.
• Branch to subsidiary: This is possible but involves incorporating a new Australian company, transferring the branch’s assets, contracts, and employees to the subsidiary, and then deregistering the branch with ASIC. Tax consequences (particularly transfer pricing and stamp duty) need careful management. Many companies find it simpler to start with the right structure from the outset.
• Company to trust: Less common, but sometimes done for tax planning reasons. This is complex and should only be undertaken with specialist legal and tax advice.

Key Considerations

• Tax implications: Transferring assets between structures can trigger capital gains tax, GST, and stamp duty. Seek professional advice to minimise these costs.
• Contracts and licences: Existing contracts, leases, and licences may need to be novated (transferred) to the new entity, which requires the other party’s consent.
• Employee transfers: Employees may need to be terminated and re-hired by the new entity, or transferred under the Fair Work Act’s transfer of business provisions.
• Cost: Professional fees for restructuring typically range from $2,000 to $10,000 or more, depending on complexity.

The best advice is to choose the right structure from the beginning wherever possible. But if your circumstances have changed, restructuring is always an option with proper planning.

Frequently Asked Questions

What is the most common business structure in Australia?

The sole trader structure is the most common by number of registrations, accounting for over 60% of all Australian businesses. For businesses with employees or significant turnover, the proprietary limited company (Pty Ltd) is the most common structure. The choice between the two often depends on the size and risk profile of the business.

Which business structure pays the least tax in Australia?

There is no single answer because the optimal tax outcome depends on your total income, the number of beneficiaries or shareholders, and your personal circumstances. Trusts offer the most flexibility for distributing income to beneficiaries in lower tax brackets. Companies pay a flat 25% (for base rate entities), which is lower than the top personal rate of 45%. Sole traders and partnerships pay personal rates, which can be lower or higher than the company rate depending on income level. Professional tax advice is essential to determine the best structure for your situation.

Do I need a resident director for a Pty Ltd company?

Yes. Under the Corporations Act 2001, every Australian proprietary limited company must have at least one director who ordinarily resides in Australia. This requirement applies to subsidiaries of foreign companies. If you do not have an Australian-based individual to serve as director, AusBusinessRegister provides professional resident director services to meet this requirement.

Can I change from sole trader to a company?

Yes, and this is one of the most common business structure transitions in Australia. The process involves incorporating a new Pty Ltd company, transferring your business assets and contracts to the company, updating your ABN and registrations, and potentially dealing with capital gains tax implications. Most accountants can guide you through the process, and the transition typically takes two to four weeks.

What is the cheapest business structure to set up in Australia?

The sole trader structure is the cheapest to set up. Registering for an ABN is free and can be done online in minutes. If you want to operate under a business name other than your personal name, the business name registration fee is $39 for one year. There are no ASIC company registration fees, no constitution to prepare, and no ongoing annual review fees.

Which business structure is best for foreign companies entering Australia?

Foreign companies typically choose between a branch registration and a subsidiary (Pty Ltd). A branch is simpler and cheaper to set up, suits market-testing phases, and allows losses to flow to the parent. A subsidiary offers liability protection, local credibility, and is better for long-term operations. The right choice depends on your goals, risk appetite, and tax strategy. AusBusinessRegister specialises in helping foreign companies with both options — learn more about registering your business in Australia.