Public liability insurance protects your business against claims from third parties, meaning members of the public or clients, who are injured or have their property damaged because of your business activities. It also pays your legal defence costs. It’s the standard term in the UK, Australia, Ireland, and New Zealand. In the US and Canada, the broader version is called general liability or commercial general liability. It’s rarely required by law, but landlords, clients, councils, and event venues often demand it before you can trade. Cost depends on your trade, turnover, and cover limit, with common limits running from £1 million in the UK to $5, $10, or $20 million in Australia.

Public Liability Insurance: Key Facts at a Glance

Item	Detail
What it covers	Third-party injury and property damage from your business
Who it protects against	Claims by the public and clients, not employees
US equivalent	General liability, or commercial general liability (CGL)
Legally required?	Usually no, but often required by contract
Common UK limits	£1m, £2m, £5m, £10m
Common Australia limits	$5m, $10m, $20m
Typical cost	Varies by trade, turnover, and limit
Not covered	Employees, professional advice, your own property

Public liability insurance is one of the first policies most small businesses and sole traders buy. If a customer trips in your shop, or you damage a client’s property on a job, this cover pays the compensation and the legal bill instead of you. The term causes real confusion across borders, though. The US uses a different and broader name for similar cover. This guide explains what it means, what it covers, what it costs, and how the terminology lines up around the world.

What Is Public Liability Insurance?

It’s business cover that pays when a third party makes a claim against you for injury or property damage linked to your work. A third party means someone outside your business. That could be a customer, a client, a supplier, or a passer-by. It does not mean your own staff.

The policy covers the compensation you’re legally liable to pay. It also pays the legal defence costs of fighting or settling the claim. Those defence costs matter. Even a claim that turns out to be unfounded can run to tens of thousands in solicitor or attorney fees. So public liability does two jobs at once. It pays out valid claims up to your chosen limit, and it funds the defence when someone takes action against you, valid or not.

Public Liability vs General Liability vs Commercial General Liability

This is the confusion worth settling first. Using the wrong term can lead you to the wrong policy. The names describe similar cover. But they come from different countries and different scopes.

Public liability is the term used in the UK, Australia, Ireland, New Zealand, and other Commonwealth countries. In the US and Canada, the equivalent is general liability, formally commercial general liability, or CGL. The key difference is scope. A US general liability policy is broader. It bundles public liability, meaning third-party injury and property damage, with product liability, completed-operations cover, and personal and advertising injury. A policy labelled just “public liability” is narrower. It covers the injury-and-damage core, but usually not advertising or personal injury. In the UK you won’t even find a product called general liability. Instead, businesses buy public liability, product liability, and employers’ liability as separate covers. So think of public liability this way. It’s the third-party injury-and-damage heart of the broader US general liability policy.

What Public Liability Insurance Covers

The easiest way to understand it is through the claims it’s built for. Two kinds of incident sit at its centre. One is injury to a third party. The other is damage to someone else’s property.

For third-party injury, picture a customer slipping on a wet floor in your shop. Or a delivery driver hurt while making a drop-off at your premises. The policy covers their medical costs, lost earnings, and compensation, up to your limit. For property damage, picture a kitchen fitter who scratches a client’s expensive worktop, or a consultant who spills coffee over a client’s laptop. The insurer pays to repair or replace it, rather than you settling privately. On top of both, the policy funds your legal defence, negotiates settlements, and covers court costs if the dispute escalates. Product liability, covering harm caused by a product you sold, is often included in a public liability policy in markets like the UK and Australia.

Who pays: a quick example

Say a plumber is fixing a tap in a client’s kitchen. A pipe bursts and floods the client’s timber floor, causing $8,000 of damage. The client claims. Public liability responds, and the insurer pays the repair cost, minus the plumber’s excess. Now change the story. The plumber’s own tools are ruined in the same flood. That loss is not covered. It’s the plumber’s own property. And if the plumber’s apprentice is hurt, that’s an employee claim, so it falls under workers’ comp or employers’ liability, not public liability. Same incident, three very different answers.

What Is Not Covered by Public Liability Insurance

Knowing the gaps is as important as knowing the cover, because these are the claims people wrongly assume are included. Four exclusions sit outside a standard public liability policy.

Injury or illness to your own employees isn’t covered here. That sits under employers’ liability insurance in the UK, which is legally required, or workers’ compensation in the US. Professional mistakes and bad advice aren’t covered either. Those need professional indemnity or professional liability insurance. Damage to your own tools, stock, or premises falls outside the policy too. It needs contents or commercial property cover instead. Deliberate acts, contractual penalties, and claims you already knew about are excluded across almost all liability policies. If your risk is giving advice or handling client data, public liability alone leaves a serious gap.

Do You Really Need It, and Is It Mandatory?

For most businesses, the honest answer is simple. You’re not forced to buy it by law, but you’ll struggle to operate without it. Public liability is generally not a legal requirement in the UK or Australia. Employers’ liability is different, since UK law does mandate that one.

In practice, though, it’s often unavoidable. Landlords, councils, shopping centres, markets, construction sites, and event venues frequently demand proof of it before they’ll let you work or trade. Many client contracts and government tenders require it too, often at a set minimum limit. So even where no law compels it, your customers and landlords usually will. Beyond the paperwork, one serious injury or damage claim can be large enough to close a small business. That’s the real reason to carry it. For a sole trader visiting clients or a stallholder at a market, it’s effectively essential.

How Much Does Public Liability Insurance Cost?

There’s no single price, because insurers rate it on risk. Your trade, turnover, cover limit, claims history, and location all move the premium, so one tradesperson can pay far less than another in a different trade.

Market	Common limits	Typical cost guide
Australia	$5m, $10m, $20m	About $400 to $1,500 a year for small business
Australia (low-risk sole trader)	$5m to $10m	From around $39 to $70 a month
UK	£1m, £2m, £5m, £10m	Modest for low-risk trades, more for high-risk
US (general liability)	$1m per occurrence, $2m aggregate	Commonly around $500 to $1,000 a year

In Australia, most small businesses pay roughly $400 to $1,500 a year for $5 to $10 million of cover. High-risk trades like roofing or scaffolding can pay several thousand. One useful quirk: doubling your limit rarely doubles your premium. Defence costs are a large fixed part of the price, so stepping from $5 million to $10 million often adds only $80 to $150 a year. In the US, a typical $1 million general liability policy commonly runs a few hundred to about a thousand dollars a year for a small business. Reaching a $10 million limit usually means adding an umbrella policy on top rather than buying it outright.

Public Liability Insurance by Country

Because the term is used across several markets, the details differ by country. The core cover is the same, but the norms and limits vary.

In the UK, public liability is bought by sole traders and companies alike, commonly with limits of £1 million to £10 million. It’s often paired with employers’ liability, which is legally required if you have staff. In Australia, it’s a first-buy policy for tradies and small businesses. There, $10 million is now the practical standard, because most leases, council permits, and contracts require it. A $20 million limit is common for larger commercial or government work. Requirements in New South Wales, Queensland, and other states are broadly similar. Specific job sites, though, set their own minimums. Ireland and New Zealand follow the same public liability model as the UK. Across all of them, the pattern holds: not legally forced, but demanded by contracts and venues, and priced on your risk.

How to Get Public Liability Insurance

Getting covered is straightforward once you know your trade and the limit you need. You can buy directly from insurers. You can also use a broker, or an online comparison site that quotes several insurers at once.

Have a few details ready, since they drive your quote. That means your business activity or trade, your annual turnover, your number of employees, and the cover limit any contract requires. Check the limit against what your clients, landlord, or venue actually demand. Then compare specific policies on their exclusions and excess, not just the headline price. A broker is worth using if your trade is higher-risk or your contracts have unusual requirements. The wrong limit or a missing extension can leave you exposed.

The Bottom Line

The honest read on public liability insurance is that it’s rarely optional in practice, even when it’s optional in law. The businesses that skip it tend to assume their work is low-risk. That holds right up until a customer trips or a client’s property gets damaged, and the legal bill lands. Two points save people the most trouble. First, don’t confuse it with the covers it excludes: if you give professional advice you also need professional indemnity, and if you have staff you need employers’ liability or workers’ comp. Second, buy the limit your contracts require, and lean higher rather than lower. The step up in cover usually costs far less than the step up in protection. Get those right, and public liability does exactly what it should: turns a potentially business-ending claim into a manageable premium.

Conclusion

Public liability insurance covers third-party injury and property damage claims arising from your business, along with the legal costs, and it’s the standard term across the UK, Australia, Ireland, and New Zealand. In the US and Canada, the broader equivalent is general liability, or commercial general liability, which adds products and advertising-injury cover. It’s seldom required by law but frequently demanded by contracts, landlords, and venues, and it’s priced on your trade, turnover, and limit. Match the cover to what your contracts require, understand what it excludes, and buy from a broker or comparison site after checking the exclusions, not just the price.

FAQs

What does public liability insurance cover?

It covers claims from third parties, such as customers or the public, who are injured or have their property damaged because of your business activities. It pays the compensation you’re liable for and your legal defence costs, up to your policy limit. It does not cover your own employees or your own property.

What is public liability insurance in simple terms?

It’s business cover that pays if your work injures someone or damages their property, and someone claims against you. For example, if a customer slips in your shop or you break a client’s equipment on a job. It handles the compensation and the legal bill instead of you paying out of pocket.

What is the difference between public liability and general liability?

They describe similar cover under different names. Public liability is the UK, Australian, and Commonwealth term, while general liability is the US and Canadian term. General liability is usually broader, bundling public liability with product and advertising-injury cover, whereas a bare public liability policy focuses on third-party injury and property damage.

Is public liability the same as commercial general liability?

Not exactly. Commercial general liability, or CGL, is the US policy and is broader. It includes the third-party injury and property damage that public liability covers, plus products, completed operations, and personal and advertising injury. Public liability is best seen as the core of CGL rather than an identical product.

What is not covered by public liability insurance?

It doesn’t cover injury to your own employees, which needs employers’ liability or workers’ compensation. It also excludes professional mistakes and bad advice, which need professional indemnity, and damage to your own tools, stock, or premises. Deliberate acts and contractual penalties are excluded too.

What is an example of a public liability claim?

A common example is a customer slipping on a wet floor in your store and being injured, then claiming for medical costs and lost earnings. Another is a tradesperson accidentally damaging a client’s property while working, such as scratching an expensive worktop. In both, the policy pays the compensation and legal costs.

How does public liability insurance work?

You choose a cover limit based on your risk and any contract requirements, and pay a premium set by your trade and turnover. If a third party claims against you for injury or damage, the insurer investigates, pays valid compensation up to your limit, and funds your legal defence. You usually pay an agreed excess on each claim.

Do I really need public liability insurance, and is it mandatory?

It’s rarely required by law, but it’s often unavoidable in practice. Landlords, clients, councils, markets, and event venues frequently demand proof of it before you can work or trade. Given that one serious claim can close a small business, most customer-facing businesses need it regardless of the legal position.

Is it worth having public liability insurance?

For most businesses that interact with the public or clients, yes. A single injury or damage claim, plus legal fees, can far exceed years of premiums. Since defence costs apply even to unfounded claims, the cover protects you against the cost of being wrongly blamed as much as being at fault.

What happens if I don’t have public liability insurance?

You’d pay any successful claim and all legal costs yourself, which can be severe enough to end a small business. You may also be unable to win contracts, rent premises, or trade at markets and events that require proof of cover. In short, you carry the full financial risk and lose access to work that mandates it.

How much is a $1,000,000 general liability policy?

For a typical small business in the US, a $1 million general liability policy commonly costs a few hundred to about a thousand dollars a year, though risk and trade move that a lot. That’s usually paired with a $2 million aggregate limit. Higher-risk trades pay more, and quotes vary widely by insurer.

How much does $10 million public liability insurance cost?

In Australia, $10 million cover is the practical standard and often costs a low-risk small business roughly $400 to $1,500 a year, since stepping up from $5 million adds relatively little. In the US, a $10 million limit is usually reached by adding an umbrella policy over a base general liability policy rather than buying it directly.

How much is public liability insurance in general?

There’s no fixed price, as it’s rated on your trade, turnover, cover limit, claims history, and location. Low-risk sole traders may pay from around $39 a month in Australia, while high-risk trades pay far more. The reliable approach is to get quotes for your specific business rather than relying on an average.

Do sole traders need public liability insurance?

Sole traders aren’t legally required to hold it, but most need it in practice. If you work at client sites, meet customers in person, or run any physical service, clients and venues will usually expect proof of cover before the job. It also protects you personally, since a sole trader carries unlimited liability.

Where can I get public liability insurance and a quote?

You can buy it directly from insurers, through an insurance broker, or via online comparison sites that quote several insurers at once. Have your trade, turnover, employee count, and required cover limit ready, since these drive the quote. Compare exclusions and excess, not just price, and use a broker for higher-risk trades.

About This Guide

The InsuranceGuidances Editorial Team researches business insurance topics for a global readership using insurer and broker sources. This guide drew on UK, Australian, and US liability cover wording and cost data from providers including Hiscox, Simply Business, BizCover, and MoneyGeek. Reviewed July 2026.

Sources

Insurance Information Institute, business liability insurance basics (iii.org)

Simply Business UK, “Public liability vs general liability insurance” (simplybusiness.co.uk)

Hiscox UK, “What is general liability insurance?” and public liability limits (hiscox.co.uk)

MoneyGeek, “General Liability vs Public Liability Insurance” (moneygeek.com)

Sprintlaw Australia, “General Liability vs Public Liability” (sprintlaw.com.au)

BizCover, “How Much Does Public Liability Insurance Cost” (bizcover.com.au)

National Cover Insurance, Australian public liability cost guide (nationalcover.com.au)

SimplyQuote UK, “What Is General Liability Insurance? UK vs US Meaning” (simplyquote.co.uk)

OCMI, “Public Liability vs General Liability Explained Simply” (ocmiworkerscomp.com)

upcover, public liability cost and limits in Australia (upcover.com)