Choosing a Business Structure in Australia: Key Options

Choosing a business structure in Australia is one of the first decisions a new owner makes, and it affects tax, personal risk, running costs and how easily the business can grow or be sold. The four most common options are a sole trader, a partnership, a company and a trust. This guide explains the main features of each in general terms so that you can ask better questions of your lawyer and accountant.

Why your business structure matters

Your structure determines who owns the business and who is legally responsible for its debts. It affects how income is taxed, what you must report and to whom, and what happens if you want to bring in a partner, an investor or a buyer. Changing structure later can involve cost and tax consequences, so choose carefully at the start.

Sole trader

A sole trader is the simplest structure. You own and run the business yourself, and the business is not legally separate from you. According to the Australian Government's business.gov.au guidance, you can use your own tax file number to lodge returns, you are personally liable to pay tax on the income earned, and an ABN is available (though not always required).

• Advantages: low cost, simple to set up, fewer reporting requirements and full control.
• Disadvantages: unlimited personal liability, meaning your personal assets can be at risk if the business cannot pay its debts, and no ability to split business income with family members.

Partnership

A partnership exists where two or more people, or other entities, carry on a business together with a view to profit. In NSW, general partnerships are governed by the Partnership Act 1892 (NSW). In a general partnership, partners generally carry unlimited personal liability for the business, and the partnership needs an ABN and a TFN. The partnership lodges a tax return, and each partner pays tax on their share of the net income.

A written partnership agreement is not legally required but is strongly recommended. It should cover ownership shares, how profits and losses are shared, who makes decisions, what happens if a partner leaves or dies, and how disputes are resolved. Without one, default rules in the legislation will apply, which may not match what the partners expected.

Company

A company is a separate legal entity from its owners. In Australia, companies are registered with ASIC under the Corporations Act 2001 (Cth). The company owns assets, enters contracts and is responsible for its debts, and its shareholders are generally not personally liable beyond any unpaid amount on their shares.

• Advantages: limited liability for shareholders, a clearer structure for bringing in investors or selling shares, and potential tax benefits depending on your circumstances.
• Disadvantages: higher set-up and running costs, ASIC and tax compliance obligations, and legal duties imposed on directors.

Directors must apply for a director ID before a company is registered, and they owe duties under the Corporations Act, including duties of care and diligence and to act in good faith for a proper purpose (see sections 180 to 184). Lenders and landlords often ask directors to give personal guarantees, which reduces the practical protection of a company structure.

For tax, the Australian Taxation Office applies a lower company tax rate (currently 25 per cent) to base rate entities, compared with 30 per cent for other companies. Check the current rates on the ATO website. Whether your company qualifies depends on conditions such as turnover and the type of income it earns, so confirm this with your accountant.

Trust

In a trust structure, a trustee carries on the business for the benefit of the beneficiaries. The trustee can be an individual or a company, and a formal trust deed sets out how the trust operates. Trusts are commonly used for family businesses and asset protection planning and can offer flexibility in how income is distributed, but they are more complex and expensive to set up and administer. The trustee must carry out formal yearly administrative tasks and is generally personally liable for the trust's obligations unless it is a company acting as trustee, which is why many trusts use a corporate trustee.

How to compare the options

Consider these questions with your advisers:

1. How much personal risk are you comfortable with, and will lenders or landlords require guarantees?
2. Will you have partners, investors or family members involved?
3. How will profits be distributed and taxed, now and as the business grows?
4. What are the set-up, accounting and compliance costs?
5. Do you plan to sell the business or bring in outside capital?

You may also need to consider GST registration, which business.gov.au notes is required when annual turnover reaches $75,000, as well as business name registration, licences, insurance and employee obligations. These requirements apply regardless of which structure you choose.

Frequently Asked Questions

What is the best business structure in Australia for a small business?

There is no single best option. A sole trader is simple and cheap, a company offers limited liability, a partnership suits two or more owners working together, and a trust may suit family or asset protection planning. The right choice depends on your risk, tax position and plans.

Can I change my business structure later?

Yes, but it often means transferring assets, contracts, licences and employees to the new entity, and there may be tax and duty consequences. Planning ahead can reduce these costs.

Does a company protect me from personal liability?

Generally, a company's debts are its own and shareholders are not personally responsible for them. However, directors have legal duties and can be personally liable in some situations, and personal guarantees given to lenders or landlords remain enforceable against the guarantor.

Do I need a written agreement for a partnership or trust?

A partnership agreement is not mandatory but is strongly recommended. A trust must be created by a trust deed, which sets out how the trust is run. Both documents should be tailored to your circumstances.

This article is general information only and is not legal advice. Laws and processes change, and every situation is different. Speak to a lawyer about your circumstances before you act.