Sole Trader, Company or Trust: How Australian Fractional Executives Set Up

The right business structure for an Australian fractional executive depends on your income level, your client mix, your risk tolerance, and how seriously you want to take asset protection from day one.

This question comes up constantly among practitioners new to fractional work. The answer is rarely simple, because the structure you choose shapes your tax position, your liability exposure, your superannuation obligations, and even how clients perceive you commercially. Getting it wrong in year one creates real friction to unwind later.

The Three Structures Most Fractional Executives Consider

Australian fractional executives typically choose between three operating structures: sole trader, proprietary limited company (Pty Ltd), or a discretionary (family) trust. Each sits at a different point on the spectrum of simplicity versus control.

A sole trader arrangement means you operate under your own ABN, file a personal tax return that includes your business income, and carry unlimited personal liability for any business debts or claims. Setup takes minutes through the Australian Business Register. There is no separate legal entity.

A Pty Ltd company creates a separate legal entity. The company holds its own ABN and ACN, enters contracts in its own name, and pays tax at the corporate rate rather than your personal marginal rate. You become a director and typically a shareholder, drawing income as a salary, director's fee, or dividend.

A discretionary trust is a legal structure where a trustee holds assets and income on behalf of beneficiaries. The trustee is usually a corporate trustee (a Pty Ltd set up specifically to act as trustee), and you and your family members are named as discretionary beneficiaries. The trust itself pays no tax; instead, it distributes income to beneficiaries each financial year, and each beneficiary pays tax at their own marginal rate.

There is a fourth option some practitioners consider: a unit trust. Unit trusts are less common for individual fractional executives and more relevant where two or more people are going into practice together with fixed ownership proportions. If you are operating solo, a discretionary trust or Pty Ltd will cover most scenarios.

Why Sole Trader Works in the Early Stages

Sole trader status makes sense when you are testing the fractional model, earning below roughly $120,000 annually, and working across enough clients that the Personal Services Income rules (discussed below) are unlikely to apply in a way that creates problems.

The compliance burden is genuinely low. You lodge a standard individual tax return with a business schedule, keep records of income and deductible expenses, and register for GST once your turnover reaches $75,000 (ATO threshold, current as of 2026). There are no ASIC fees, no annual review charges, and no separate company tax return.

The limitation is tax efficiency. All income flows directly to your personal marginal rate. Above $190,000, the top Australian marginal rate is 45% plus the 2% Medicare levy (ATO resident tax rates, 2026/27). A fractional executive billing $250,000 per year as a sole trader pays 47% on every dollar above that threshold, with no mechanism to retain earnings in a lower-taxed entity or distribute them to a lower-income spouse or adult child.

Asset protection is also absent. If a client pursues a claim against you personally, your home, savings, and personal assets are all reachable. For a Fractional CFO advising on capital raises or financial reporting, or a Fractional CMO managing significant media spend, that exposure is worth thinking about carefully.

What a Pty Ltd Company Actually Gives You

A Pty Ltd structure gives fractional executives a flat corporate tax rate of 25% for base rate entities (those with an aggregated turnover below $50 million and no more than 80% passive income), compared to the top personal marginal rate of 47% including Medicare levy. That gap creates genuine tax deferral: income retained in the company is taxed at 25%, and you only pay personal tax on what you draw out as salary or dividend. That benefit depends on the income not being caught by the PSI rules, covered below.

The company also separates your personal assets from business liabilities. A client claim sits against the company, not against you personally, provided you have not given personal guarantees and have not engaged in insolvent trading as a director.

Setup costs are modest. ASIC charges $636 to register a new company (ASIC fee schedule, 2026/27), and the annual review fee is $342 per year. You will also need an accountant to prepare and lodge a separate company tax return each year, which adds to your compliance overhead.

One practical consideration for fractional executives: a Pty Ltd structure is often more commercially credible with mid-market and corporate clients. Some procurement teams and legal departments at larger organisations require a counterparty company rather than an individual ABN. Operating through a Pty Ltd removes that friction before it becomes a negotiation.

The structure also makes it easier to bring in a co-director or a business partner later, to split equity, or to sell the practice if you ever choose to exit. A sole trader practice has no transferable legal entity; a company does.

How a Discretionary Trust Fits the Fractional Model

A discretionary trust gives the trustee (usually a corporate trustee Pty Ltd) full discretion each year over how income is distributed among beneficiaries. That flexibility is the core tax advantage: income can flow to a spouse, adult children, or a related company, each of whom may be on a lower marginal rate than you.

In a practical example, a Fractional CTO earning $300,000 through a discretionary trust might distribute $120,000 to themselves, $90,000 to a spouse earning no other income, and $90,000 to a corporate beneficiary taxed at 30%. (A company that only receives trust distributions does not get the 25% base rate, because that income counts as passive.) Provided the practice qualifies as a Personal Services Business, the combined tax outcome is meaningfully lower than if the full $300,000 flowed to a single individual at the top marginal rate.

The setup is more involved than a Pty Ltd. You need a trust deed (typically $1,500 to $3,000 from a commercial lawyer), a corporate trustee company (another ASIC registration at $636), and an accountant comfortable with trust distributions and the associated tax minutes. Annual compliance costs are higher, and the ATO scrutinises trust distributions closely, particularly where adult children beneficiaries are involved.

The ATO's section 100A guidance, set out in Taxation Ruling TR 2022/4 and Practical Compliance Guideline PCG 2022/2 (applying from 1 July 2022), made it harder to distribute trust income to adult children at low rates without commercial justification. Any trust structure set up now needs to account for that guidance. Your accountant should be across it; if they are not, find one who is.

The PSI Rules: The Variable That Overrides Everything Else

The Personal Services Income rules are the single most important tax consideration for fractional executives in Australia, and the one most commonly misunderstood at setup.

Income counts as PSI when more than 50% of what you are paid under a contract is for your personal skills, knowledge, or effort, rather than for a business asset or the work of a team. Most fractional executive income qualifies as PSI under that definition. If that income is earned through a company or trust and your arrangement does not qualify as a Personal Services Business (PSB), the ATO attributes it back to you personally, whatever structure you use. As a sole trader, failing the tests limits the deductions you can claim.

You qualify as a PSB if you pass the results test. If you do not, you can still qualify by passing one of the other three tests below, provided no more than 80% of your PSI comes from one client (and its associates). If more than 80% comes from one client and you fail the results test, the only route is a PSB determination from the ATO.

→ The results test: for at least 75% of your PSI, you are paid to produce a result, you supply your own tools and equipment, and you are liable to fix defective work.

→ The unrelated clients test: you earn PSI from two or more unrelated clients, won by offering your services to the public (a website, advertising, or tendering, for example). Work that reaches you only through an agency or platform may not count toward this test, so check how your engagements are sourced.

→ The employment test: you engage other people to perform at least 20% (by market value) of the principal work.

→ The business premises test: for more than half the year, you maintain and use business premises that are separate from your home and from your clients' premises.

A fractional executive working across four or five clients and marketing their services publicly often passes the unrelated clients test. A fractional executive embedded with a single client for most of the year usually will not. If you do not qualify as a PSB, most of the tax advantages of operating through a company or trust disappear, because the income is attributed back to you personally.

This is why your client mix matters as much as your structure. Diversifying across multiple clients is sound commercial practice and, for most fractional executives, it also keeps the PSI rules manageable.

GST, Superannuation, and Contractor Obligations

GST registration is compulsory once your annual turnover reaches $75,000 (ATO, 2026). Most fractional executives hit that threshold quickly. Once registered, you charge GST on your fees, lodge business activity statements (quarterly or monthly), and claim GST credits on business expenses. This applies regardless of your structure.

Superannuation is more nuanced. If you operate as a sole trader, clients may owe you superannuation contributions under the extended contractor super rules, which apply where you are paid wholly or principally for your own labour (ATO, Superannuation Guarantee ruling). These rules generally do not apply when the client contracts with your company or trust. Many clients are unaware of this obligation. It is worth raising it in your contract negotiations, because the liability sits with the client if they fail to pay.

If you operate through a Pty Ltd and pay yourself a salary, your company must pay the Superannuation Guarantee on that salary: 12% from 1 July 2025 (ATO). If you draw only dividends and no salary, no super is owed, but you also receive no employer contributions that year. Some fractional executives split their drawings deliberately to manage this trade-off.

Payroll tax is a less commonly discussed risk. If you are engaged by a single client for an extended period, some state revenue offices may deem you part of that client's payroll for payroll tax purposes. This is the client's risk rather than yours, but it can affect how clients structure engagement terms and whether they prefer you to operate through a company.

Choosing the Right Structure for Where You Are Now

A few practical patterns show up in how experienced fractional executives in Australia actually set up.

Practitioners in their first year, testing the model with one or two clients and earning below $120,000, often start as sole traders. The low compliance burden lets them focus on building a client base and understanding how fractional engagements work in practice before adding structural complexity.

Practitioners billing above $150,000 annually, working across three or more clients, and wanting asset protection typically move to a Pty Ltd. The tax deferral at 25% becomes meaningful at that income level, and the commercial credibility with mid-market clients is a genuine advantage.

Practitioners with a supportive family structure, a spouse or adult children with lower taxable income, and a long-term view often set up a discretionary trust with a corporate trustee. The income splitting benefit compounds over time, but the setup and compliance costs mean it rarely makes sense below $200,000 in annual billings.

Whatever structure you choose, have an accountant experienced in professional services contracting review it before you start. The ATO's guidance on PSI, trust distributions, and contractor super has shifted materially in recent years. A general-practice accountant who does not work regularly with contractors may miss the nuances that matter most for your situation.

If you are ready to build your fractional practice and want to work with clients who value senior expertise, apply to join the Fractionus network. The right structure and the right clients both matter from day one.

Frequently Asked Questions

Can an Australian fractional executive operate as a sole trader?

An Australian fractional executive can operate as a sole trader, and many do in their first year. Sole trader status is simple to set up through the Australian Business Register and carries low compliance costs. The main limitations are that all income is taxed at personal marginal rates (up to 47% including Medicare levy), and there is no separation between personal and business assets if a client makes a claim against you.

What is the best business structure for a fractional executive in Australia?

The best fractional executive business structure in Australia depends on your income level, client mix, and risk tolerance. Sole trader suits early-stage practitioners earning below roughly $120,000. A Pty Ltd company suits those billing above $150,000 who want asset protection and the 25% corporate tax rate. A discretionary trust with a corporate trustee suits those with a family income-splitting opportunity and annual billings above $200,000.

How do the PSI rules affect fractional executives operating through a company?

The Personal Services Income rules attribute income earned through a company or trust back to the individual when that income is mainly a reward for personal skills or effort and the arrangement does not qualify as a Personal Services Business. To qualify, you need to pass the results test, or keep any single client under 80% of your PSI and pass the unrelated clients, employment, or business premises test. Fractional executives working across several unrelated clients they won through public marketing often pass the unrelated clients test.

Do fractional executives need to register for GST in Australia?

Fractional executives in Australia must register for GST once their annual turnover reaches $75,000 (ATO, 2026). Most fractional executives reach this threshold within their first year of operating. Once registered, GST applies to all fees charged to clients, and quarterly or monthly business activity statements must be lodged. GST registration is required regardless of whether you operate as a sole trader, a Pty Ltd, or a trust.

Are clients required to pay superannuation to fractional executives?

Clients may be required to pay superannuation contributions to fractional executives under the ATO's extended contractor superannuation rules, which apply where the executive is a sole trader paid wholly or principally for their own labour. The obligation generally does not apply when the client contracts with the executive's company or trust. Fractional executives should raise superannuation treatment explicitly in contract negotiations to avoid disputes later.

What does it cost to set up a Pty Ltd company for a fractional practice in Australia?

Setting up a Pty Ltd company for a fractional executive practice in Australia costs $636 in ASIC registration fees (ASIC fee schedule, 2026/27), plus legal or accountant fees for the constitution and shareholder agreement, which typically range from $1,000 to $2,500. The ongoing ASIC annual review fee is $342 per year. A separate company tax return adds to annual accounting costs, typically $1,500 to $3,500 depending on complexity.

Can a fractional executive use a family trust to split income in Australia?

A fractional executive can use a discretionary (family) trust to distribute income to lower-earning family members, including a spouse or adult children, reducing the overall household tax burden. However, the ATO's guidance under TR 2022/4 and PCG 2022/2 limits distributions to adult children without commercial justification, and the PSI rules may attribute trust income back to the individual if the arrangement does not qualify as a Personal Services Business. Professional tax advice is essential before setting up a trust structure.

What happens if I start as a sole trader and want to switch to a company later?

Switching from sole trader to a Pty Ltd company is possible but involves real friction. Client contracts must be novated or re-executed in the company's name. Your ABN changes. Bank accounts, insurance policies, and any registered business names need to be transferred or updated. There may also be capital gains tax implications if assets are transferred into the company. Setting up the right structure from the outset, or at least within the first financial year, is considerably easier than restructuring mid-practice.