If you're a one-person trade - just you, your ute and your tools - it's tempting to think public liability insurance is something only bigger outfits need. It isn't. As a sole trader you're personally on the hook for any damage your work causes, which makes cover arguably more important, not less. This guide explains public liability insurance for sole traders in New Zealand: why you still need it, how sole-trader and company cover differ, and what it typically costs. For the basics of the cover itself, see our public liability insurance guide.
This guide is general information for NZ trade businesses, not financial or insurance advice. Cover, limits and exclusions vary between insurers - always read the policy wording and consider talking to a licensed insurance broker or financial adviser before you buy.
Why a one-person trade still needs public liability
Public liability covers your legal liability when your work accidentally causes damage to someone else's property or injury to a third party - a drill through a pipe, a cracked tiled floor, a ladder dropped onto a client's car. Those risks don't shrink because you work alone. If anything, a sole trader feels them harder:
- No company shield. As a sole trader there's no separate legal entity between you and the claim. A liability claim can come after your personal assets, not just the business. That's the single biggest reason sole traders carry public liability.
- Clients and head contractors require it. Main contractors, commercial clients, property managers and councils routinely won't let you on site without it - commonly a limit of $1 million to $5 million. One-person trades are turned away from jobs for not holding it.
- One bad day can end the business. Without cover, a single sizeable claim comes straight out of your own pocket.
For the full picture of what public liability does and doesn't cover, see our main public liability insurance NZ guide, and the tradie insurance NZ hub.
Sole trader vs company cover - what actually changes
The public liability product is much the same whether you trade as a sole trader, partnership or limited company. What changes is who carries the risk and how the policy is set up:
| Sole trader | Limited company | |
|---|---|---|
| Who's liable | You personally - claims can reach personal assets | The company is the legal entity; cover protects it |
| Whose name on the policy | Yours / your trading name | The company name |
| Typical limit required | $1m-$5m, depending on the client | $1m-$5m, depending on the client |
| Staff covered | Usually just you | You and any employees acting for the business |
A common myth is that becoming a company removes the need for public liability. It doesn't - the company still causes the same physical damage, and clients still demand the cover. Incorporating changes your personal exposure; it doesn't change the insurance you need on site.
What it typically costs for a sole trader
As a rough guide, a sole-trader public liability policy often starts from a few hundred dollars a year for lower-risk trades at a $1m limit, rising with higher limits, riskier trades and bigger turnover. It's one of the cheaper covers a trade business buys relative to the protection it provides. Treat any figure as indicative and get a couple of quotes for your specific trade - and don't choose on price alone, because the exclusions decide whether a claim actually pays.
How to get the right cover (and a fair price)
Insurance is easy to over- or under-buy. A few practical steps:
- Get two or three quotes. Premiums and exclusions vary a lot between insurers for the same trade. Compare like-for-like cover, not just price.
- Use a broker for anything complex. A licensed insurance broker can match cover to your trade and contracts - and they're usually paid by the insurer, not you.
- Read the exclusions and the excess. The exclusions decide whether a claim actually pays out. Check the excess (what you pay per claim) and any per-item limits.
- Match cover to your contracts. If a main contractor, council or commercial client requires a specific limit (often $1m-$5m public liability), your policy has to meet it before you can start.
Frequently asked questions
Do sole traders legally need public liability insurance in NZ?
Not by law for most trades - but main contractors, commercial clients and councils commonly require it (often $1m-$5m) before you can work on their site, so in practice many sole traders can't take jobs without it.
Does becoming a limited company mean I don't need public liability?
No. A company still causes the same physical damage on site, and clients still require the cover. Incorporating changes your personal asset exposure, not the insurance you need.
How much public liability cover does a sole trader need?
Enough to meet what your clients and head contractors require - commonly $1m-$5m. If you're unsure, a broker can match the limit to your trade and the sites you work on.
Is public liability the same as income protection?
No. Public liability covers damage or injury you cause to others. Income protection replaces your income if illness or injury stops you working - worth considering as a sole trader with no backstop.
Sources
- business.govt.nz - business insurance
- Insurance Council of New Zealand (ICNZ)
- Consumer NZ - insurance
- WorkSafe NZ - Health and Safety at Work Act 2015
- ACC - cover for businesses
Update log
- 24 June 2026 - Published. General information reviewed against New Zealand industry and government sources (see Sources above).
Last reviewed: 24 June 2026.
Do sole traders need insurance?
There is no law forcing a sole trader to hold insurance, but in practice most do need it. As a sole trader you are personally liable, so a single claim - injuring someone or damaging their property - can come straight out of your own pocket and personal assets. Public liability is the cover most sole traders start with, and many clients and site managers require proof of it before you can work for them.