A Carnegie tradie we spoke with had built a solid business over six years. Steady jobs, good clients, a growing crew. Then one large commercial job went wrong, a dispute over defects turned into a legal claim, and because he was still a sole trader, the claim was not against some separate business. It was against him. His house, his savings, his ute, all of it sat on the line. He had never asked the question that matters most as a business grows: when to change from sole trader to company Melbourne owners should be asking long before the risk catches up with them.
If you started as a sole trader, you almost certainly chose it because it was simple. One ABN, one tax return, low cost, easy to run. That simplicity is exactly why so many Melbourne owners stay put for years longer than they should. This article walks through when staying a sole trader stops being smart and starts being risky, what a company or trust actually changes, and how to move across cleanly.
What being a sole trader really means under Australian law
A sole trader is not a separate legal entity. Under Australian law you and your business are treated as one and the same. According to ASIC, a sole trader is not on the companies register and carries no separation between personal and business affairs, while a company is a separate legal entity with limited liability.
That single distinction sits behind almost every risk and benefit below. The profit is your income, the debts are your debts, and the legal exposure is your exposure.
When staying a sole trader becomes too risky
There is no single revenue figure that answers when to change from sole trader to company Melbourne owners can rely on, but there are clear warning signs. When two or three of these appear in your business, it is time to get advice.
Your personal assets are exposed to business risk
This is the big one. As a sole trader there is no legal wall between the business and you. If the business is sued or cannot pay a debt, creditors can pursue your home, your car and your savings. For a tradie on large jobs, a consultant carrying professional risk, or anyone with staff, that exposure grows every year you stay put.
Your tax bill is climbing as profit grows
Sole traders pay tax at individual marginal rates. Once profit is consistently high, those rates can sit well above the company tax rate. A base rate entity company (broadly, aggregated turnover under $50 million with no more than 80 per cent of its income being passive income) is taxed at 25 per cent, while other companies are taxed at 30 per cent, according to the ATO. Passive income here includes things like rent, dividends, interest, royalties and net capital gains, which matters if you are a property investor. A company earning mostly rent will fail the 80 per cent test and be taxed at 30 per cent, not 25. A sole trader also cannot split income with family members the way some trust and company structures can, so more of the profit is taxed in one set of hands.
You want to grow, raise finance or bring in partners
Lenders and investors often see a company as more credible and easier to deal with. A sole trader cannot issue shares, so bringing on a partner or investor is awkward at best. If growth, finance or succession is on your mind, the sole trader structure quietly works against you.
The business depends entirely on you
A sole trader business generally ends if you die or can no longer work, unless you have made specific arrangements. Companies and trusts offer far better continuity and succession, which matters if you want the business to outlast you or be sold one day.
How a company or trust changes your tax, liability and control
Moving to a company or trust is not just a tax play. It changes three things at once.
Liability. A company is a separate legal entity, so in most cases the company carries the business debts and legal risk, not you personally. That corporate shield is not absolute, though. Directors can still be held personally liable for certain ATO debts, such as unpaid superannuation and PAYG withholding, through Director Penalty Notices, and banks or landlords will often still ask for your personal guarantee. Even so, the everyday commercial risk is contained inside the company in a way it never is for a sole trader.
Tax. Company profits are taxed at a flat 25 or 30 per cent rather than climbing individual rates, and profits can be retained for reinvestment. A discretionary trust can distribute income across beneficiaries, opening up streaming a sole trader cannot access. The trade-off is more rules, more lodgements and more advice. One important point: a restructure should be driven by genuine commercial reasons like liability, growth or succession, not by tax alone. Moving purely to access a lower tax rate can attract the ATO’s anti-avoidance rules, so the tax benefit should be one factor among several.
Control and structure. A company has shareholders and directors. A trust has a trustee and beneficiaries, often with a company as trustee. Both give you cleaner ways to bring in family, partners or investors, and a proper record of who owns and controls what.
The hidden costs and admin of moving to a company or trust
A company is not automatically better. It costs more to set up and run, and brings obligations a sole trader never faces.
You will have annual ASIC fees, company tax returns, and potentially separate financial statements. Directors carry legal duties and can be held personally responsible if those duties are breached. If you pay yourself a wage, you take on payroll, PAYG withholding and super for yourself as an employee. A trust adds its own layer, including a trust deed and annual trustee decisions.
None of this is a reason to avoid restructuring. It is a reason to do it deliberately, with numbers in front of you, not on the assumption a company fixes everything.
Knowing when to change from sole trader to company Melbourne owners can trust
Working out when to change from sole trader to company Melbourne owners will benefit most from comes down to matching the structure to your risk, your profit and your plans. Here is the honest test we run with clients. If your personal assets are exposed to real business risk, if your profit is consistently high enough that flat company tax would beat your marginal rate, or if you are planning to grow, raise finance or bring in others, the sole trader structure is probably holding you back.
If none of those apply yet, staying a sole trader may still be right. The simplicity has real value while the business is small and low risk. The aim is to move at the right moment, before a problem forces your hand, not to restructure for its own sake.
How to change structure without creating a tax problem
Once you have settled when to change from sole trader to company Melbourne timing usually favours acting deliberately, not in a rush. Done poorly, a restructure triggers unexpected tax. Done well, it is a clean handover. With your accountant guiding the order, the steps look like this.
Set up the new structure first
Register the company (or establish the trust and its corporate trustee), get its own tax file number and ABN, and register for GST if required. Do this before winding down the sole trader side, so there is no gap in trading.
Transfer assets carefully
Moving business assets from you to the company can trigger capital gains tax, because assets are generally treated as changing hands at market value. You may be eligible for the Small Business Restructure Roll-over, which lets you transfer active business assets tax-free, but only if your aggregated turnover is under $10 million, the move is a genuine restructure of an ongoing business, and the ultimate economic ownership does not really change. That $10 million roll-over threshold is different from the $50 million company tax rate threshold, so do not confuse the two.
Duty deserves a separate word for Melbourne owners. Victoria does not charge stamp duty on transfers of standard business assets such as goodwill, intellectual property and non-fixed plant and equipment. Real property is different and can attract duty. Property investors should also understand how Victoria’s commercial and industrial property tax reform works, because it is often misread. Since 1 July 2024, commercial and industrial property does not simply become duty-free. A property enters the new system the first time it is sold or transacted on or after that date, and stamp duty is still paid on that entry transaction, one final time. The annual commercial and industrial property tax, charged at 1 per cent of the property’s site value, then applies from 10 years after that transaction. This is where early advice pays for itself. The ATO’s guidance on changing your business structure sets out the notification and cancellation obligations that apply.
Cancel the sole trader registrations you no longer need
Once the business runs through the new entity, cancel the sole trader GST registration and, where the sole trader business has closed, the sole trader ABN. According to business.gov.au, failing to cancel old registrations leads to dual lodgements and confusion. You must also notify the Australian Business Register of changes to your registered details within 28 days, and keep records of the decision, as the ATO requires business records to be kept for five years.
Who should think about moving now
The answer to when to change from sole trader to company Melbourne owners face is rarely the same for two businesses. A few groups, though, tend to reach that point sooner than others.
Tradies and contractors on larger jobs. The liability exposure alone often justifies a company well before the tax numbers do. One bad job should not put your family home at risk.
Consultants and professionals on consistently high profit, where the gap between your marginal rate and the company rate becomes significant and profit can be retained and reinvested.
Startups expecting investment. If outside money or co-founders are coming, a company is almost always the right home from early on, because restructuring later is harder and more expensive.
Property investors and family groups, where a trust can offer asset protection and flexible distribution a sole trader cannot. The right structure depends heavily on your holdings, so plan it carefully rather than copy a friend.
Common questions Melbourne owners ask about restructuring
Is it better to be a sole trader or a company for tax?
It depends on your profit and the type of income. At lower profit, the sole trader tax-free threshold and marginal rates can work in your favour. As profit grows, the flat 25 or 30 per cent company rate and the ability to retain profit often win. Bear in mind a company earning mostly passive income like rent is taxed at 30 per cent, not 25. There is no universal answer, only the right answer for your numbers.
Does a company really protect my house and personal assets?
In most everyday commercial situations, yes, because the company carries the business risk as a separate legal entity. It is not absolute, though. Personal guarantees to banks or landlords, Director Penalty Notices for unpaid PAYG and superannuation, and certain other debts can still reach you personally. Think of a company as strong protection, not a magic shield.
Can I keep using my sole trader ABN for the company?
No. A company is a different legal entity and needs its own ABN. When the sole trader business closes, cancel that ABN so you are not lodging for two entities at once.
A clear next step
Deciding when to change from sole trader to company Melbourne owners can act on with confidence is easy to keep putting off, right up until something forces it. You do not have to work it out alone, or commit to anything today. A short conversation is enough to tell you whether you are fine as you are or whether it is time to plan a move.
If you would like an honest read on your own situation, our team at Angkor CA in Carnegie is happy to talk it through. You can explore our services or get in touch whenever it suits you. Call us on 1300 888 168, email [email protected], or visit angkorca.com.au. No pressure, just clear advice for your business.
This article is general information only and does not take your personal circumstances into account. It is not financial, tax or legal advice. Please speak with a qualified adviser before making decisions about your business structure.