As a sole trader, you and your business are the same legal person. So if a customer or client makes a claim against you, it's your personal money on the line. Your savings, your car, in serious cases your home.
Business insurance, and public liability cover in particular, puts a financial buffer between what your business does and what you personally own. It isn't required by law for most sole traders, but in practice a lot of clients and event organisers won't work with you without it.
This guide covers what the main policies actually do, who genuinely needs them, and the bit sole traders most often miss: how to claim your premiums back as a business expense at tax time. It's written for sole traders running online and small service businesses.
Is business insurance a legal requirement for sole traders? {#legal-requirement}
For most sole traders, no.
The one type of cover that is compulsory by law is employers' liability insurance. If you employ anyone who isn't a close family member, the Employers' Liability (Compulsory Insurance) Act 1969 requires you to hold at least £5 million of cover. Most policies are sold at £10 million as standard. If you work entirely on your own, this doesn't apply to you.
Public liability insurance, by contrast, is not a legal requirement. There's no law that says a sole trader must hold it.
Here's the practical reality though. For a lot of businesses it might as well be compulsory. Plenty of clients, commercial landlords, and event organisers want to see proof of at least £1 million of public liability cover before they'll work with you or let you book a stall. No certificate, no contract.
A few other types of cover are required for specific activities rather than for being a sole trader as such. Motor insurance is compulsory if you drive for work, and some regulated professions must hold professional indemnity cover under their regulator's rules. Check what applies to your trade.
What does public liability insurance cover? {#what-it-covers}
Public liability insurance pays your legal defence costs and any compensation if someone outside your business claims that your work caused them injury or damaged their property.
For a sole trader, that can stretch further than you might expect:
- A customer tripping over your display at a market stall or pop-up event
- A courier damaging a neighbour's gate or car while delivering for you
- A customer who visits to collect an order and injures themselves
- A product you sold causing damage to a customer's property
It also covers the cost of defending claims that turn out to be groundless. Legal fees can run into thousands before a baseless claim is thrown out, so the cover earns its keep even if you never pay a penny of compensation.
What it won't do is cover your own tools, stock, or equipment. Those need separate cover. And it won't cover injuries to your employees, which is what employers' liability is for.
What insurance risks do online-only sellers actually face? {#ecommerce-risks}
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This is the question a lot of ecommerce sole traders ask. If everything happens online, where's the risk?
More than you'd think.
Courier deliveries. Every parcel is a point where something can go wrong. A courier cracking a customer's doorstep tile or clipping a parked car while reversing can lead to a claim against you as the sender.
Markets and pop-up events. A lot of online sellers top up their income with weekend markets or seasonal fairs. The moment you set up a physical stall, your exposure jumps. A display that tips over or a cable someone trips on can all turn into a claim.
Click and collect. If customers come to your home or a unit to collect orders, you're responsible for their safety while they're on your premises.
Shared storage. If you keep stock in a unit shared with other businesses or the public, an incident involving your goods or your access to the site can create liability.
A single claim in any of these can run well past the cost of a year's cover once legal fees are added in. For many online sellers that makes the decision an easy one. If your business serves online buyers, our ecommerce accounting service can help you keep cover, costs, and tax all joined up.
How is sole trader insurance different from limited company insurance? {#sole-trader-vs-limited}
This comes up a lot when sole traders think about incorporating, and the answer is more nuanced than "limited companies are better protected."
As a sole trader you have unlimited personal liability. If a claim is bigger than your cover, or you have no cover at all, the claimant can come after your personal assets. That can mean savings, vehicles, and in serious cases your home.
A limited company is a separate legal person. Its liability is generally limited to its own assets, so your personal finances sit behind a layer of protection if a claim exceeds the company's cover.
But here's the catch. Most clients and venues still want proof of public liability insurance whatever your structure, so the cover requirement doesn't go away when you incorporate. And the premium is usually similar for a sole trader and a small company at the same turnover.
If liability protection is part of why you're thinking about incorporating, get advice first. There are tax and admin trade-offs on both sides. Our team can talk you through the sole trader versus limited company decision for your situation.
Is sole trader business insurance tax-deductible? {#tax-deductible}
Yes, and this is the part sole traders most often miss.
Business insurance premiums taken out wholly and exclusively for your trade, including public liability, professional indemnity, and tools cover, are an allowable expense. You deduct the premium from your taxable profit before working out your Income Tax and Class 4 National Insurance.
So the real cost of cover is lower than the sticker price, because it cuts your tax bill.
Illustrative example. Priya is a sole trader selling handmade goods online. She's a basic-rate taxpayer in 2025/26 and pays £180 a year for public liability cover. She deducts the full £180 from her taxable profit. Within the basic-rate band she pays Income Tax at 20% and Class 4 NI at 6%, a combined 26%. So the deduction saves her 26% of £180, which is £46.80. Her net cost for the year's cover is £180 minus £46.80, which is £133.20.
The figures used here are the 2025/26 basic Income Tax rate of 20% and the Class 4 NI main rate of 6%, which applies to profits between the Lower Profits Limit of £12,570 and the Upper Profits Limit of £50,270. If your profits fall outside that band, or you pay tax at the higher rate, your saving will differ.
The habit to build is simple. Keep your policy schedule and premium receipt somewhere you can find them, photograph them into your bookkeeping app as you pay, and flag them at year-end. They're easy to overlook. You can claim them yourself through your return, or hand the lot to us with our Self Assessment service.
How does the claims process work? {#claims-process}
The single most important thing: tell your insurer as soon as an incident happens. Don't try to settle with the other party yourself, and don't wait to see whether they'll actually complain.
Once you report it, the insurer appoints a claims handler who runs the process for you, including any back-and-forth with the claimant or their solicitor. You don't have to face that conversation alone.
To help things along, gather evidence at the time. Photos of the scene, contact details for any witnesses, copies of relevant invoices or order records, and any written messages from the other party all help establish what happened.
Straightforward claims are often settled within a few weeks, though anything contested can take considerably longer. Either way, your insurer covers the legal costs even if the claim is dismissed, which is frequently the most valuable part of the policy.
How do you choose the right policy? {#choosing-a-policy}
Start with your actual risk profile. Are you purely online, or do you attend markets and events? Do customers ever come to your home or storage unit? Do any current or prospective contracts set a minimum cover level?
Once you know what you need, compare quotes from a few providers rather than taking the first one you see. Most sole traders can arrange suitable cover online in a few minutes.
Three things worth checking before you buy:
- Cover level. £1 million is a common minimum for low-risk online sellers. If you attend events, or a contract specifies £2 million, buy to match.
- Exclusions. Make sure the policy actually covers what you do. Some exclude particular product types or market trading.
- Combined cover. Many insurers bundle public liability with tools, stock, or professional indemnity for better value than buying each separately.
Review your cover once a year. If you've grown, started attending events, or taken on a contract with specific requirements, last year's policy may no longer be enough.
Want help making sure your insurance is right and fully claimed? Book a free 20-minute call with a Zmartly accountant and we'll review your cover and your allowable expenses together.
Frequently asked questions {#faqs}
Is public liability insurance a legal requirement for sole traders in the UK? No. It isn't compulsory under UK law for sole traders. The exception is employers' liability cover, which is required if you employ anyone who isn't a close family member. Even so, most clients, venues, and event organisers will insist on public liability cover before they work with you.
Do I need insurance if I only sell online and never meet customers? Possibly not for public liability specifically, but it depends on your setup. If you send goods by courier, attend any in-person events, or hold stock where others can access it, cover is sensible. Some marketplaces and venues also require it regardless of how you sell.
Is my business insurance premium tax-deductible? Yes. Premiums taken out wholly and exclusively for your trade are an allowable business expense. They reduce your taxable profit and therefore your Income Tax and Class 4 National Insurance. Keep the policy schedule and receipt and claim them through your Self Assessment return.
How much tax does claiming my premium actually save? It depends on your tax band. For a basic-rate sole trader in 2025/26 paying 20% Income Tax and 6% Class 4 NI, the deduction saves 26% of the premium. A higher-rate taxpayer saves more. So a £180 premium saves a basic-rate trader £46.80, leaving a net cost of £133.20.
Does sole trader business insurance cover my stock and tools? No. Public liability covers third-party claims only. You need separate tools and equipment cover for damage to your own kit, and stock cover for goods lost, stolen, or damaged in transit or storage.
Should I get more cover if I incorporate as a limited company? Your liability exposure changes when you incorporate, but your clients' insurance requirements usually don't. Most will still want £1 million to £2 million of public liability cover, and the premium is similar at comparable turnover. Speak to an accountant before incorporating, as the tax and liability implications go well beyond insurance.
