Founders often pick a business structure by asking which one sounds most established. That is the wrong question. The right one is: what happens to my personal assets if the business fails or is sued?
Everything else follows from that.
| Mechanism 1 | separate legal personality |
|---|---|
| Mechanism 2 | how profits are taxed |
| Trade-off | protection and credibility cost admin and disclosure |
| Rule | match the structure to the risk, not to ambition |
Mechanism 1 — separate legal personality
This is the single idea that matters most, and it is worth stating plainly.
A sole trader and the business are the same legal person. Business debts are personal debts. If the business is sued, the claim reaches the owner's house and savings.
A limited company is a separate legal person. It owns its own assets, signs its own contracts, and carries its own debts. If it fails, creditors reach the company's assets — normally not the shareholders' personal ones.
That boundary is the entire point of incorporating, and it is why the choice is a risk decision rather than a status decision.
Two things that pierce the boundary and are worth knowing before you rely on it:
- Personal guarantees. Banks and landlords routinely ask a director to guarantee the company's obligations. Once signed, the protection is gone for that debt. This is the most common way limited liability quietly disappears
- Mixing money. Running personal expenses through the company account undermines the claim that the two are separate
The practical consequence: incorporating protects you only if you then behave as though the company is separate. Separate bank account, separate records, documented decisions.
Mechanism 2 — how profits are taxed
The second mechanism is where the money goes before it reaches you.
With a sole trader or partnership, profit is normally treated as the owner's income and taxed once at the individual level.
With a company, the company is taxed on its profit, and money passed to the owner is a second event — salary, dividend, or director's fee, each with its own treatment.
This creates the classic planning question: how much to take as salary and how much as dividend. The answer depends on current rates and on social contribution rules, and both change.
Because of that, this is a section where you should get local professional advice rather than rely on any article, including this one. Rates and thresholds move; the mechanism does not.
What does not change is the structural point: a company adds a layer, and layers cost administration. If the business is small and low-risk, that cost may outweigh the benefit.
The main options in practice
Sole trader — cheapest and fastest to start, minimal filing. No liability protection. Suits low-risk service work, testing an idea, or a side activity.
Partnership — two or more people, similar simplicity. Warning worth stating: in a general partnership, each partner can be liable for obligations the others create. This surprises people badly. If you take this route, a written partnership agreement is not optional.
Limited company — separate personality, credibility with banks and larger customers, and a structure that can take investment. Costs: registration, annual filings, accounts, and disclosure of certain information on a public register.
Branch of a foreign company — an existing overseas company registering to operate locally rather than creating a new entity. Useful when the parent already has the contracts and the track record, but note that a branch is not a separate person — the parent carries the liability.
Questions that decide the answer
Rather than comparing structures in the abstract, answer these:
- Could this business plausibly be sued for more than it owns? If yes, incorporate
- Will I need external investment? If yes, a company with shares is close to a requirement
- Will I hire staff? This adds obligations regardless of structure, but a company usually handles it more cleanly
- Will larger customers or government bodies be clients? Many will only contract with a registered company
- Can I carry the annual admin cost? Be honest — filings missed for two years are more expensive than doing them
- Am I testing an idea or committing? Testing can start simple and convert later
Question six matters more than founders expect: you can start as a sole trader and incorporate later. Converting is normal and not especially difficult. Starting with a structure you cannot maintain is the worse error.
What to settle before you register anything
- Ownership split, in writing — the single most common source of business disputes
- What happens if a founder leaves — decide this while everyone is friendly
- Who signs what — authority limits for contracts and payments
- How profits are distributed and how much is retained
- How disputes get resolved
These belong in a shareholders' agreement or partnership agreement. Registration paperwork does not cover them, and the default rules that apply in their absence are rarely what the founders would have chosen.
Frequently asked questions
What is the real reason to incorporate?
Separate legal personality — the company carries its own debts, so a failure or a claim normally reaches company assets rather than the owners' personal ones.
How does limited liability get lost in practice?
Most often through personal guarantees given to banks or landlords, and through mixing personal and company money so the separation is no longer credible.
Is a general partnership risky?
It can be. Each partner may be liable for obligations the others create, which is why a written partnership agreement should be treated as essential rather than optional.
Can I start simple and change later?
Yes. Converting from sole trader to a company is routine. Starting with a structure whose annual admin you cannot maintain is the more expensive mistake.
