Public liability insurance for sole traders NZ: do you really need it?

Short answer: Public liability insurance for a sole trader in New Zealand may cover your legal liability when your work accidentally injures another person or damages their property. Clients often require it, even though most trades are not required by a general law to hold it. Cover depends on the policy wording.

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.

What public liability commonly responds to

It commonly responds to claims that your work caused third-party property damage or injury - for example, drilling through a customer's water pipe or someone being hurt by equipment left at a work site. Policies may also cover legal defence costs, subject to their terms, limits and exclusions. See our public liability insurance NZ guide for more detail.

What it does not cover

Public liability is not cover for every business loss. It generally does not cover:

Your own tools or vehicle - see tool insurance NZ for tools.
Your own injuries - ACC covers personal injury in New Zealand; business policies have separate terms for other situations.
The cost of redoing faulty work itself - damage that faulty work causes to other property may be treated differently. Check the policy wording.
The work in progress - contract works insurance may cover the job under construction.

Sole trader and company: what changes?

The cover is intended for third-party injury or property damage either way, but the insured business and legal responsibility differ. A sole trader and the business are not separate legal entities, so the trader can be personally liable for business claims. A limited company is a separate legal entity, but it can still face claims arising from its work. Make sure the policy names the correct business and people; incorporation alone does not replace insurance clients or contracts require.

Limits and cost

Client and contract requirements are a practical starting point: public liability limits of $1 million to $5 million are commonly requested, but check the specific written requirement for each job. Cost varies with trade, turnover, claims history and limit. As a rough indication, sole-trader cover may start at a few hundred dollars a year; get quotes for your circumstances and compare exclusions, excesses and limits as well as price.

How to compare cover

Compare two or three quotes using the same limit and business details.
Check the exclusions and excess to understand what the policy may leave you paying.
Match the limit to your contracts before starting work.
Ask a licensed broker if your work or contracts make the options hard to compare.

Frequently asked questions

Do sole traders legally need public liability insurance in NZ?

There is no general law requiring most trades to hold it, but main contractors, commercial clients and councils commonly require cover before allowing work on site.

Does becoming a limited company mean I do not need public liability?

No. A company can still face claims arising from its work, and clients may still require cover. Incorporation changes the legal entity; it does not satisfy an insurance requirement in a contract.

How much public liability cover does a sole trader need?

Check what your clients and head contractors require. Limits of $1 million to $5 million are commonly requested, but requirements vary by job and contract.

Is public liability the same as income protection?

No. Public liability concerns legal liability for injury or damage to others. Income protection is a separate type of cover for lost income if illness or injury stops you working.

Sources

Update log

24 June 2026 - Published. General information reviewed against New Zealand industry and government sources (see Sources above).

Last reviewed: 24 June 2026.