Most tradies start as a sole trader because it’s the path of least resistance. Grab an ABN, start invoicing,
sort the tax out at the end of the year. It’s the right call for a one-person operation just getting off the
ground. The trap isn’t starting as a sole trader — it’s staying one for years after the business has
outgrown the structure, simply because nobody flagged the moment things changed.
That’s really what this comes down to: sole trader and company aren’t “beginner” and “advanced”
versions of the same thing. They’re genuinely different structures with different tax treatment, different
liability exposure, and different admin obligations — and the right time to move from one to the other is
a specific, identifiable point, not a vague feeling that the business has “gotten bigger.”
Sole Trader vs. Company: What’s Actually Different
It’s worth being precise here, because a lot of tradies assume “company” just means more paperwork
for the same outcome. It doesn’t.
As a sole trader, there’s no legal separation between you and the business — its income is your income,
taxed at your individual marginal rates, and its debts are your debts, with no shield between business
liability and personal assets. A company is a separate legal entity. It pays its own tax, generally at the
company tax rate rather than individual marginal rates, and it provides a liability barrier between
business debts and personal assets that a sole trader structure simply doesn’t have. A few things that
actually separate the two in practice:
- A sole trader is taxed personally. A company is taxed separately. Sole trader income gets
added to your personal tax return and taxed at individual marginal rates, which climb quickly
past a certain income level. A company pays tax at the company rate, which is often lower once
profit passes a certain point. - A sole trader carries unlimited personal liability. A company limits it. If a sole trader business
gets sued or can’t pay a debt, personal assets — the house, the car, savings — are exposed. A
company structure generally protects personal assets from business liabilities, with some
exceptions like director guarantees. - A sole trader has simple admin. A company has more of it. Sole trader tax is one individual
return. A company needs its own tax return, ASIC obligations, separate business banking, and
generally more structured bookkeeping — real, ongoing overhead that needs to be weighed
against the benefits.
The Signs It’s Actually Time to Move
There’s no single income figure that triggers the switch for everyone, but a few genuine signals tend to
show up together when a sole trader structure has been outgrown:
- Profit is consistently pushing you into a higher personal tax bracket. Once trading profit is
comfortably above what a reasonable wage would be, the gap between personal marginal rates
and the company tax rate starts to represent real money left on the table every year. - You’re carrying real liability risk. Bigger jobs, bigger contracts, subcontractors working under
you — the more exposure a business carries, the more a liability shield actually matters, rather
than being a theoretical nice-to-have. - You’re bringing on employees or subcontractors at scale. Managing payroll, workers’
compensation, and superannuation obligations for a team is a different level of compliance than
a one-person operation, and it often coincides with the point a company structure starts making
more sense operationally too. - You want to bring on a business partner or investor. Splitting ownership, formalising a
partnership, or bringing in outside capital is far cleaner through a company structure than trying
to retrofit it onto a sole trader arrangement. - You’re planning to sell the business eventually. A company is generally a more sellable asset
than a sole trader operation, where the business and the individual are legally inseparable.
None of these alone is a guaranteed trigger — it’s usually two or three showing up around the same
time that makes the case.
Why Waiting Too Long Costs More Than Moving Too Early
There’s a common instinct to delay the switch because restructuring sounds like a hassle, or because
“it’s working fine as is.” The trouble is that the cost of waiting compounds quietly:
- Extra tax paid every year the structure isn’t optimised doesn’t get refunded retroactively — it’s
simply gone, year after year, for as long as the mismatch continues. - Liability exposure sits there the whole time, even if nothing ever goes wrong. The risk doesn’t
announce itself until the one year it does. - Restructuring gets more complex, not less, the longer it’s delayed. More assets, more
contracts, more established client relationships under the sole trader ABN all make an eventual
transition more involved than it would have been earlier.
That said, moving too early carries its own cost — company setup and ongoing compliance isn’t free,
and for a genuinely small operation still finding its feet, the extra admin overhead can outweigh benefits
that haven’t materialised yet. This is exactly why it’s a decision worth making deliberately, with actual
numbers, rather than defaulting to either “stay as I am” or “everyone says I should incorporate.”
What Moving to a Company Actually Involves
Switching structures isn’t just a form — it typically means setting up a new ABN and ACN for the
company, transferring or re-establishing contracts and business banking under the new entity,
registering for GST and PAYG withholding if applicable, and making sure existing clients and suppliers are
updated. Getting this sequence right matters: a poorly timed or poorly executed transition can create its
own tax and compliance headaches, which is exactly the kind of thing new business setup services exist
to manage properly the first time, rather than requiring a second cleanup later.
Once the structure is in place, ongoing business taxation and compliance obligations shift too —
company tax returns, ASIC annual reviews, and generally more structured record-keeping than a sole
trader setup requires. It’s a genuine step up in obligation, which is part of why the decision should be
based on real numbers rather than assumption.
A Practical Checklist
Questions worth running through honestly before deciding either way:
- What’s my actual profit, after paying myself a reasonable wage? The company tax rate
advantage only shows up once profit is meaningfully above that baseline. - What’s my real liability exposure right now? Bigger jobs and bigger contracts change the risk
calculation, even if nothing has gone wrong yet. - Am I planning to bring on staff, a partner, or investment in the next year or two? If yes, it’s
worth structuring for that now rather than restructuring twice. - Have I actually modelled the numbers, or am I going on instinct? The right answer depends on
real figures — turnover, profit, growth trajectory — not a general sense that “bigger businesses
are companies.”
Where This Still Gets Complicated
Worth being upfront about a few things that don’t fit a simple checklist.
- The company tax rate advantage depends on actually leaving profit in the company rather than
drawing it all out — extracting everything as a dividend or wage can erode much of the benefit. - Trusts are a third option worth considering alongside sole trader and company structures,
particularly for income-splitting or asset protection scenarios — this isn’t strictly a two-choice
decision. - Restructuring has its own transitional costs and complexity, so the right move is rarely “switch
the moment any single signal appears” — it’s usually worth a proper structure review rather
than a snap decision.
FAQs
Is there a specific income level where I should switch from sole trader to a company?
Not a fixed universal number — it depends on your actual profit after a reasonable wage, your liability
exposure, and your growth plans. It’s worth modelling your specific numbers rather than relying on a
general rule of thumb.
Does a company structure actually protect my personal assets?
Generally yes, with some exceptions — director guarantees on loans or leases, for example, can still
expose personal assets even within a company structure.
Is it expensive to switch from sole trader to a company?
There are setup and ongoing compliance costs, but for a business that’s genuinely outgrown the sole
trader structure, the tax and liability benefits typically outweigh those costs — the key is confirming that
with real numbers, not assuming either way.
Can I switch back from a company to a sole trader later if needed?
It’s possible but generally more complex than moving from sole trader to company, which is another
reason to make the initial decision carefully with actual figures rather than guessing.
The Bottom Line
The sole trader structure that made sense at the very start of a tradie business isn’t automatically wrong
later — but it doesn’t automatically stay right either. The trap isn’t picking sole trader on day one. It’s
still being a sole trader years later, well past the point the numbers stopped supporting it, simply
because nobody flagged the moment things changed. If profit, liability exposure, or growth plans have
shifted, it’s worth a proper conversation about business advisory and structure — before another
financial year goes by on a structure the business has already outgrown.
