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Business & Sole Traders

Understanding the Legal Structure of a Business in Australia

Author

Emmanuel Sarris

Date Published

Small business owners reviewing figures on a tablet in their cafe

Which business structure should I choose?

Starting a business in Australia can be an exciting venture, but it's crucial to understand the legal structures available to determine which best suits your needs. In this blog post, we will delve into the various legal structures for businesses in Australia, including sole trader, partnership, company, and trust. By gaining insight into these structures, you can make informed decisions that will set your business up for success.

What You'll Learn

  • Which business structure should I choose?
  • Section 1: Introduction to Legal Structures
  • Section 2: Sole Trader
  • Section 3: Partnership
  • Section 4: Company


Section 1: Introduction to Legal Structures

When starting a business in Australia, one of the first decisions you'll need to make is choosing the right legal structure. The legal structure you select will impact various aspects of your business, including tax obligations, liability, and regulatory requirements. Let's explore the four main types of legal structures in Australia:

Section 2: Sole Trader

A sole trader is the simplest form of business structure and is owned and operated by a single individual. As a sole trader, you have complete control over your business and its operations. However, it's essential to note that as a sole trader, you are personally liable for any debts or obligations of the business.

Section 3: Partnership

A partnership involves two or more individuals (or entities) who carry on a business together to make a profit. In a partnership, all partners share in the profits and losses of the business. It's crucial to have a legally binding partnership agreement in place to outline each partner's rights and responsibilities.

Section 4: Company

A company is a separate legal entity from its owners (shareholders) and is regulated by the Australian Securities and Investments Commission (ASIC). One of the key advantages of a company structure is limited liability, which means that shareholders are not personally liable for the company's debts. Setting up a company involves more administrative requirements compared to other structures.

Section 5: Trust

A trust is a legal arrangement where a trustee holds and manages assets on behalf of beneficiaries. Trusts are commonly used for asset protection, estate planning, and tax minimization purposes. There are different types of trusts, including discretionary trusts, unit trusts, and hybrid trusts, each with its own set of rules and regulations.

Section 6: Choosing the Right Structure for Your Business

When deciding on the most suitable legal structure for your business, consider factors such as the nature of your business, your long-term goals, tax implications, and liability concerns. It's advisable to seek professional advice from a lawyer or accountant to ensure you make an informed decision that aligns with your business objectives.

Section 7: Registering Your Business

Regardless of the legal structure you choose, you will need to register your business with the Australian Business Register (ABR) and obtain an Australian Business Number (ABN). Depending on your structure, you may also need to register for goods and services tax (GST) or other licenses and permits.

Section 8: Compliance and Ongoing Obligations

Once your business is up and running, it's essential to stay compliant with regulatory requirements and meet your ongoing obligations. This includes maintaining accurate financial records, lodging annual tax returns, and fulfilling any reporting requirements specific to your business structure.

Section 9: Changing Your Legal Structure

As your business grows and evolves, you may find it necessary to change your legal structure to better suit your needs. Whether you're looking to restructure as a company, establish a trust, or transition from a sole trader to a partnership, seek professional advice to navigate the process smoothly.

Section 10: Conclusion

Understanding the legal structures available for businesses in Australia is fundamental to establishing a strong foundation for your venture. By weighing the advantages and disadvantages of each structure and seeking expert guidance where needed, you can position your business for long-term success and growth in the competitive Australian market.


By following these guidelines and insights on the legal structures for businesses in Australia, you can make informed decisions that will set your business up for success. Whether you choose to operate as a sole trader, partnership, company, or trust, each structure has its unique characteristics and implications that can significantly impact your business operations. It's crucial to consider your specific business needs and seek professional advice when determining the most suitable legal structure for your venture.

What are the main business structures in Australia?

The four main structures are sole trader, partnership, company, and trust. A sole trader is simplest and cheapest but offers no liability protection. A company provides limited liability at a flat tax rate but costs more to run. A trust offers tax flexibility and asset protection but is complex to administer. The right choice depends on income, risk profile, and growth plans.

What is the company tax rate in Australia for 2026?

Base rate entities — companies with aggregated turnover under $50 million that derive no more than 80% of income from passive sources — pay 25%. All other companies pay 30%. Shareholders pay income tax on dividends, potentially offset by franking credits for tax already paid at the corporate level.

When should I consider switching from sole trader to a company?

Consider a company when business net profit consistently exceeds $100,000–$120,000 and the rate differential generates meaningful savings, when you need liability protection from business creditors, when you plan to bring in investors, or when you want to retain earnings at the lower corporate rate rather than distributing everything as personal income.

What is a family trust and how does it work for tax purposes?

A family trust (discretionary trust) holds assets for a class of beneficiaries. The trustee decides each year how much income to distribute to each beneficiary. By directing income to members in lower tax brackets, the trust reduces the overall family tax burden. Income retained in the trust is taxed at the highest marginal rate (47%).

What are the ongoing costs of running a company in Australia?

Ongoing costs include the ASIC annual review fee (currently $310 for a proprietary company), company tax return lodgement fees, accounting fees for financial statements, and potentially payroll and BAS compliance. Total annual compliance costs typically range from $2,000 to $8,000 depending on activity levels and complexity.

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