Professional indemnity for a limited company vs a sole trader
Reviewed by Matthew Bartlett, Director, Apex Insurance Brokers Limited · Last reviewed 2026-08-05
Does trading status change the cover you get?
The core promise of a professional indemnity (PI) policy does not change with your legal structure. Whether you are a sole trader, a partnership or a limited company, PI responds to claims that your professional service — advice, design, a report, a piece of work — caused a third party to suffer a financial loss, and it covers your defence costs alongside any damages.
What changes is the legal person the policy is built around. That has practical consequences for who is named, how liability sits, and how an insurer looks at the risk.
Limited company vs sole trader: what actually differs
| Feature | Sole trader | Limited company |
|---|---|---|
| Who is insured | The individual, trading in their own name | The company as a separate legal entity |
| Liability exposure | Personal — your own assets can be at risk | Usually limited to the company; directors can still face claims in some situations |
| Policyholder name | Your name (and any trading name) | The registered company name and number |
| Past work / continuity | Needs care if you later incorporate | Prior sole-trader work may need to be picked up by retroactive cover |
| Contracts require it? | Often, if you take on client contracts | Commonly, and clients may check the entity name matches |
The single most important point: a limited company is a distinct legal person, so the policy insures the company, not you personally. If you traded as a sole trader before you incorporated, that earlier work does not automatically transfer — it needs to be accounted for.
Why “limited liability” is not the same as being covered
Incorporating limits your personal liability for many company debts, but it does not remove the need for PI. A dissatisfied client still brings a claim against the company, and the company still needs to fund a defence and any settlement. Without PI, those costs fall on the business.
Directors should also be aware that limited liability is not absolute. In certain circumstances — personal guarantees, a duty of care assumed in your own name, or a professional body's rules — an individual can still be pursued. A well-structured PI policy, and where relevant directors' and officers' cover, is what closes that gap. If you are unsure how your contracts allocate liability, talk it through with a broker before you buy.
Does being a limited company make PI cost more?
Not by itself. Insurers do not price PI on the letters after your business name. They price the risk of a claim, and the drivers of that are broadly the same for a sole trader and a limited company doing identical work.
The factors that genuinely move your premium include:
- Your profession and the work you do — higher-consequence advice (financial, legal, design, construction) rates differently from lower-risk services.
- Annual fee income or turnover — a proxy for how much work you do and the scale of a potential loss.
- The limit of indemnity you choose — commonly offered as generic options such as £1m, £2m or £5m; a higher limit generally costs more.
- Your claims history — past claims or known circumstances weigh heavily.
- Contract sizes and client type — large corporate or public-sector clients can raise the exposure.
- Retroactive date — how far back cover reaches for past work.
A limited company will sometimes look like a different risk to an insurer — not because of the structure, but because incorporation often coincides with more staff, bigger contracts or higher turnover. It is those underlying facts that shift the rating, not the incorporation itself.
Sole trader or limited company, we'll match the cover to how you actually trade — and place it with the right insurer.
Get a PI quote →The trap when a sole trader becomes a limited company
This is where trading status catches people out. PI is written on a “claims made” basis: the policy that matters is the one in force when a claim is made against you, not when you did the work. So if you traded for years as a sole trader, then incorporated, a claim about that old sole-trader work could arrive after the individual is no longer trading and the company is the live entity.
To avoid a gap, the new company policy usually needs to:
- carry a retroactive date that reaches back to cover the earlier sole-trader work, and
- be set up so past liabilities are picked up by the company, or the sole-trader policy is kept running as needed.
Getting the entity names and retroactive date right at the point of incorporation is far easier than trying to fix it after a claim lands. This is a common reason to use a broker rather than a self-serve quote.
Which structure needs PI more?
Both do, if your work carries a duty of care. Many client contracts and professional bodies require PI regardless of structure, and some regulated professions must hold it as a condition of practising. Your trading status changes the mechanics of the policy, not whether you need one. The right question is not “limited or sole trader?” but “what work am I doing, for whom, and what is the worst-case financial loss if it goes wrong?”
Common questions
If I switch from sole trader to limited company, do I need a new PI policy?
Usually yes. The company is a new legal entity, so it needs a policy in its own name. The key is ensuring the retroactive date and entity details carry your past work forward so there is no gap in cover.
Is PI cheaper as a sole trader?
Not because of the status. Two businesses doing the same work, at the same turnover, with the same claims record, are rated on those facts — not on whether one is incorporated. Structure often correlates with scale, and scale is what moves the price.
Does a limited company protect me from PI claims personally?
Limited liability helps, but it is not a substitute for insurance, and it is not absolute. Directors can still face claims in certain situations. PI funds the defence and any settlement so the exposure does not fall on the business or on you.
Apex Insurance Brokers Limited is authorised and regulated by the Financial Conduct Authority (FRN 724952). This guide is general information, not advice on a specific policy or a substitute for your policy wording.