Sole Trader, Partnership, Company or Trust: Which Structure Saves You the Most Tax?

Choosing a business structure is not just a legal formality. It is one of the biggest financial decisions you will make as a business owner in Australia. The right structure can save you thousands in tax each year. The wrong one can cost you just as much, and switching later is expensive and disruptive.

Here is a practical overview of the four main business structures available in Australia, what each one means for your tax position, and how to think about which one suits your situation.

Sole Trader

As a sole trader, all of your business income is treated as personal income. You pay tax at individual marginal rates, which currently go up to 45% plus the Medicare levy. The big advantage is simplicity: low setup costs, straightforward accounting, and minimal compliance obligations. You also get access to the small business income tax offset, which can reduce your tax by up to $1,000 per year.

The downside is that at higher income levels, you are taxed at the top personal rate with no ability to split income with others. There is also no asset protection, meaning your personal assets are exposed if the business faces legal or financial trouble.

Sole trader structure works best for: people just starting out, part-time or side businesses, and service businesses with relatively modest net profits.

Partnership

A partnership splits business income between two or more people, each of whom is then taxed on their share at personal rates. The main tax advantage is income splitting: if your business partner earns less than you, distributing income between you reduces the combined tax bill. Partners also access the small business income tax offset on their share of income.

The key risk is joint liability. In a general partnership, each partner is personally liable for the debts of the business, including those incurred by the other partners. This makes asset protection a significant concern.

Partnership structure works best for: established working relationships between two or more people with complementary skills, where income splitting provides a meaningful tax advantage.

Pty Ltd Company

A company pays a flat tax rate of 25% on its profits (for base rate entities with turnover under $50 million). This is significantly lower than the top individual marginal rate of 45%, which means high-income businesses can retain more profit in the company. Profits distributed to you as dividends come with franking credits attached, which offset some of the personal tax you owe on those dividends.

Companies also provide personal asset protection, separating your business liabilities from your personal assets. There are higher setup and compliance costs, and you cannot simply withdraw money from the company as you would from a personal bank account.

Company structure works best for: businesses generating consistent profits above roughly $100,000 net, where tax savings justify the additional compliance overhead, and where asset protection is a priority.

Discretionary Trust

A discretionary trust is the most flexible structure for tax planning. The trustee can distribute income to any beneficiary at any time, in any proportion. If you have a spouse, adult children, or other family members on lower incomes, a trust lets you distribute income to them, dramatically reducing the overall family tax bill.

Trusts do not pay income tax themselves; distributions flow through to beneficiaries who pay at their own marginal rates. Setup costs are higher, and you will need an accountant familiar with trust accounting. Trusts also have stricter compliance requirements than sole trader or partnership structures.

Trust structure works best for: family businesses, situations where there are multiple potential beneficiaries on lower tax rates, and business owners focused on long-term wealth protection and estate planning.

How the four structures compare in practice

The difference in after-tax income between structures can be significant. At a net profit of $200,000 with a salary of $80,000, the difference between the least and most efficient structure can easily exceed $20,000 per year. At $400,000 net profit, that difference is larger still. A free calculator comparing your take-home income across all four structures is available on the Haymas website if you want to run your own numbers.

What the calculator does not tell you

Tax efficiency is only one input into the structure decision. You also need to consider the cost and complexity of operating each structure, your personal liability exposure, your long-term plans for the business, and whether you want to bring in other owners or investors in the future. A company or trust structure that saves $15,000 in tax may also cost $5,000 more in accounting and compliance, so the net benefit needs to be weighed carefully.

Getting it right from the start

If you are just starting a business, it is worth getting the structure right from day one. Restructuring later can trigger capital gains tax, stamp duty, and significant professional fees. If you are already trading and have never reviewed your structure, it is worth doing that review now. The tax savings can be immediate and ongoing.

At Haymas, we work with Australian business owners to review their structure, costs, and financial setup to make sure everything is working as efficiently as possible. If you would like to talk through your options, use the tax calculator on our website as a starting point, then book a free 15-minute call.