The moment usually arrives with a document. A client sends a contract that names "the company" as the party, a landlord's leasing schedule asks for director guarantees, or your accountant mentions that revenue now justifies a different structure. Sole trader has carried you this far, and it may still be the right home for the business. But incorporating is not a one-time filing. It is a standing commitment to costs, record-keeping and personal duties that follow you for as long as the company exists.
The options on the table
For most Australian small businesses the realistic options are operating as a sole trader, as a partnership, through a trust, or through a company. The narrower question most founders are actually weighing is whether to move from a sole trader or partnership into a company now, rather than later.
When people say "corporation" in Australia they usually mean a company registered with the Australian Securities and Investments Commission (ASIC). A company is a separate legal entity: it owns its assets, enters its own contracts and pays its own tax, distinct from the people who own and run it. That separation is the core benefit, and it is also the source of most of the complexity.
Two things are worth flagging before the trade-offs. First, for a small or medium business the realistic corporate vehicle is a proprietary company, usually a Pty Ltd. Public companies, listed entities and corporate collective investment vehicles belong to a different world with heavier obligations. Second, a trust is not an escape from company compliance, because trusts commonly use a corporate trustee and the company obligations below apply anyway. So the choice that looks like a menu of four options usually narrows to one practical decision: whether to incorporate now, or to stay unincorporated for the time being.
The trade-offs to weigh
The price of a company is recurring, not one-off
The registration fee and the annual review fee are set by regulation and indexed each year on 1 July, as set out on ASIC's fee indexation page. A few hundred dollars goes to ASIC before the company exists, and the annual review fee for a proprietary company is again in the low hundreds of dollars each year (around $321 in 2024-25) just to stay registered. On top of that sit the costs of getting the structure right:
- ASIC lodgements: registering the company, the annual review, and fees for the inevitable changes you will lodge, from appointing directors to changing the registered office.
- Foundation documents: a company runs on its constitution or, if it has none, the default replaceable rules in the Corporations Act 2001 (Cth) (see s 135 and s 140). Most businesses with more than one owner pay a lawyer to draft a tailored constitution and a shareholders agreement rather than relying on the defaults.
- Accounting and reporting: a company has its own tax return, payroll obligations and financial records, and larger or regulated entities can face audit or assurance requirements.
None of these are deal-breakers on their own, but they change the economics of a business that is still validating its idea or running on thin margins. Build them into the financial model before you incorporate, not after. There is also the time cost. A director who is also the bookkeeper, the compliance officer and the sales team has a fixed number of hours in a week, and company compliance takes a measurable slice of them.
Compliance becomes part of the job description
A sole trader answers mainly to the ATO at tax time. A company answers to ASIC and to its own governance rules all year round:
- A resident director: under s 201A of the Corporations Act 2001 (Cth), a proprietary company must have at least one director who ordinarily resides in Australia. If you are based overseas, that alone can force a change to your plans.
- Standing records: the company must keep registers of members and option holders, record director and shareholder decisions in minutes or written resolutions, and notify ASIC when key details change.
- The annual review: each year ASIC sends an annual statement. The company must check its details, pay the review fee and pass a solvency resolution to remain registered, and late compliance attracts late fees.
There is also a structural change worth knowing. Security interests over company assets are recorded centrally on the Personal Property Securities Register (PPSR), and the old register of charges under company law is gone. That is not a burden you can skip, it just lives in a different registry.
The difference in workload is real:
- Sole trader: keep tax records, lodge a return, pay tax at your personal rate.
- Company: registers, minutes, ASIC notifications, annual review, solvency resolution, and a company tax return, every year.
The company tax rate is not the whole tax story
Companies pay tax at 25% if they are base rate entities and 30% otherwise, per the ATO's company tax rates. That headline rate can look attractive next to a personal marginal rate, but the money belongs to the company until it is extracted, and every extraction route has its own rules:
- Dividends: profits are paid out as dividends, which under s 254U of the Corporations Act the directors determine: the amount, the timing and the method of payment. Franking credits can attach, but the timing and each shareholder's tax profile matter.
- Wages: paying a working director or founder through payroll triggers superannuation, PAYG withholding and single touch payroll reporting, just as for any other employee.
- Loans: money taken out as a loan to a shareholder or their associate can be treated as a dividend under Division 7A of the Income Tax Assessment Act 1936 (Cth) unless it is a complying loan and repaid on schedule, as the ATO explains.
The practical point is that a company defers rather than avoids the tax decision. You need a plan for how founders are paid and how profits are distributed, and that plan changes as the business and the shareholders' personal situations change. The headline rate also flatters the comparison. Tax outcomes depend on how the numbers actually move through the company over time, including how losses are used, how timing shifts between income years, and what rates apply to the shareholders when the profits finally arrive. A rate comparison on its own can point the wrong way, which is why the tax structure is worth modelling with an accountant before you incorporate, not after.
Limited liability has edges, and directors sit on them
The separate legal entity is what protects shareholders' personal assets from the company's debts. The protection has limits, and they show up exactly where you do not want surprises.
Directors owe statutory duties under the Corporations Act: to act with care and diligence, in good faith, for proper purposes and in the best interests of the company. The business judgment rule in s 180(2) shields a director who makes a decision in good faith, with no material personal interest, after informing themselves, and with a rational belief the decision serves the company. It protects considered decisions, not inattention.
The sharper edge is insolvent trading. Under s 588G, a director can be personally liable for debts the company incurs when there are reasonable grounds to suspect it is insolvent or will become so. This is why the solvency resolution at annual review is more than paperwork: directors are expected to monitor solvency continuously, not once a year.
And in practice the biggest hole in limited liability is often contractual. Banks, landlords and key suppliers routinely ask directors to sign personal guarantees for loans, leases and trade credit. If the company defaults, the guarantee puts personal assets back on the line regardless of the separate legal entity, so the terms of any guarantee deserve scrutiny before the pen goes down.
More owners and outside capital mean more governance
A company is the natural home for co-founders and investors, and that is precisely when governance stops being optional.
With several owners you need agreed rules for decision-making, exits and disputes: voting thresholds, board composition, transfer restrictions, vesting, valuation and deadlock processes. Those rules live in a shareholders agreement and the constitution, or, if you do nothing, in the default replaceable rules that apply without them.
Raising capital is regulated. Offers of shares generally need disclosure to investors, and s 708 of the Corporations Act lists the exceptions: small-scale personal offers that stay within 20 investors and $2 million in any 12 months, and offers to sophisticated and professional investors. Working inside those exemptions requires clean offer records, because the paperwork is what proves the exemption later. Offers that fall outside the carve-outs trigger the disclosure regime, which means a formal disclosure document and the cost and liability that come with it, so most early rounds are deliberately structured to stay within the exceptions.
Where a lawyer earns their keep: stress-testing the decision
The decision to incorporate is usually made on the upside, on growth, credibility and investment, while the costs show up on the downside, in compliance, tax friction and personal exposure. An Artificer Legal lawyer can pressure-test both sides before you commit.
We start by stress-testing the assumptions behind the decision: whether the extra revenue really survives the compliance load, whether the founders' remuneration plan works inside company tax, and which personal exposures a guarantee or insolvent trading risk would create. Then we model the downside, what happens to the directors personally if the business fails, and what the guarantee exposure would be. If the company route is right, we draft the documents the path needs, including a tailored constitution, a shareholders agreement, and the resolution and register processes that keep the compliance load manageable. If it is not right, you find out before you pay the registration fee, not after.
Incorporation as a duties decision, not a tax decision
The mistake that costs founders most is treating incorporation as a tax decision when it is really a duties decision. The separate legal entity protects the shareholders, but it does not protect the directors: the solvency monitoring, the s 588G exposure and the guarantees all sit with the people running the company, personally. A company structure makes sense when the growth plan, the need for limited liability and the appetite for standing compliance all point the same way. When they do not, staying a sole trader is not a failure of ambition; it is a structure decision that costs less now and can be revisited at any time.
Across the factors, the pattern is consistent. A company costs more to set up and run than a sole trader or partnership, it carries standing ASIC compliance and director duties, its tax advantages come with extraction rules that need planning, and its limited liability is real but not absolute. The decision is a trade-off between growth and governance, and the right answer depends on your risk profile, your plans for owners and capital, and the systems you are willing to run. That is a decision worth making with the numbers and the duties in front of you, and with a lawyer who can show you where the structure will bite before you sign.