What is public liability insurance?

Claudia AinsleyWritten byClaudia Ainsley
Reviewed byMatt Leeburn
Updated 26 Aug 2026

Public liability insurance is business cover that pays compensation and legal costs when your work injures a third party or damages their property.

Also known as: public liability cover, PL insurance, third party liability insurance

Key points

  • It answers claims from members of the public, such as a customer injured on your site or a wall damaged while you work.
  • No law makes it compulsory for most businesses, but head contractors, landlords and councils routinely require it in a contract.
  • Cover is bought to a limit, and the product disclosure statement sets the excess, exclusions and any capped items.
  • It does not cover your own tools, vehicles or staff: those need separate insurance and workers compensation.
  • Suppliers and financiers sometimes ask for a certificate of currency before releasing an asset on equipment finance.

What public liability insurance covers

Who needs public liability insurance

Example

Not to be confused with

Liability
a liability is any amount you owe; this insurance covers claims made against you
Business risk
business risk is the broader exposure; this policy answers only third party injury and damage

Frequently asked questions

What does public liability insurance cover?

Compensation and legal costs when your business activities injure a third party or damage their property. That includes customers on your premises, people at a site you work on, and harm caused by work you have completed. Cover applies up to the limit you buy, less the excess.

Is public liability insurance compulsory in Australia?

Not by law for most businesses, though some licensed trades and some states require it for particular occupations. In practice it works like a requirement, because contracts, landlords, councils, markets and principal contractors generally will not let you work or trade without a current certificate.

How much public liability insurance do I need?

The limit is usually set by whoever you work for, with larger contracts asking for higher amounts. Beyond any contract requirement, size it against the worst realistic outcome of your work rather than your turnover. An insurance broker can help you match the limit to the exposure.

Does public liability cover my employees?

No. Injuries to your own workers are handled by workers compensation, which is compulsory in every state and territory and arranged through the relevant scheme. Public liability covers members of the public and other third parties. Contractors sit in a grey area, so check how your policy defines them.

Is public liability insurance tax deductible?

Premiums for cover taken out for the business are generally deductible in the year you pay them, as an ordinary business expense. Apportion if the policy also covers private activity. Check the current position with your accountant or the ATO before relying on it.

Broader term: Insurance

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Sources

This article is general information only and is not financial advice.