Is professional indemnity insurance tax deductible?
Reviewed by Matthew Bartlett, Director, Apex Insurance Brokers Limited · Last reviewed 2026-08-05
Professional indemnity insurance protects you if a client alleges your advice, design or professional work caused them a financial loss. It is a running cost of doing business — and like most genuine business costs, HMRC generally lets you offset it against your profits. That means the headline premium is not the true cost. This guide explains the tax principle, how it differs between sole traders and companies, and what actually drives the premium in the first place.
Why PI insurance is usually deductible
The UK tax rule for the self-employed is the "wholly and exclusively" test set out in the Income Tax (Trading and Other Income) Act 2005. If an expense is incurred wholly and exclusively for the purposes of the trade, it is an allowable deduction. A PI policy taken out to cover your professional work clearly meets that test, so the premium can be set against your trading profit.
For limited companies, the equivalent principle sits within the Corporation Tax Act 2009, where costs incurred in the course of the trade are deductible in computing taxable profit. Again, a PI premium bought to protect the company's professional activities qualifies as a normal business expense.
The result is the same in both cases: the premium reduces the profit figure on which you pay tax, so part of the cost is effectively returned to you through a lower tax bill.
How the saving differs: sole trader vs limited company
The deduction works slightly differently depending on how you trade, though the underlying principle is identical.
| Sole trader / partnership | Limited company | |
|---|---|---|
| Where it is claimed | Business expenses on your Self Assessment tax return | Company accounts, reducing profit for Corporation Tax |
| What it reduces | Taxable trading profit (Income Tax and Class 4 NIC) | Taxable company profit (Corporation Tax) |
| Value of the relief | Depends on your marginal Income Tax band | Depends on the company's Corporation Tax rate |
| Record needed | Premium invoice / schedule | Premium invoice / schedule |
Because the exact benefit depends on your personal tax band or the company's tax position, we do not quote a fixed saving here. Your accountant can confirm the precise figure for your circumstances. The key point stands: the net cost of cover is lower than the premium you pay.
A quick note on VAT and IPT
PI premiums do not carry VAT. Instead, general insurance is subject to Insurance Premium Tax (IPT), which is included in the price your insurer charges and is not something you reclaim as input VAT. When you claim the premium as a business expense, you deduct the full amount you actually paid, IPT included. There is nothing extra to do here — just keep the schedule showing what you were charged.
What actually drives the premium
Since the deduction reduces a cost you still have to pay, it makes sense to get the premium right in the first place. Several factors move the price:
- Your profession and risk profile. A surveyor, architect or financial adviser carries different exposure to a marketing consultant. Higher-risk advice generally means a higher premium.
- The cover limit you choose. Common options are £1m, £2m or £5m. Higher limits cost more, but some clients and professional bodies mandate a minimum, so the choice is not always yours alone.
- Your turnover and contract size. Larger revenues and bigger individual contracts increase the potential value of a claim.
- Claims history. Past claims or circumstances notified to insurers can affect terms.
- Retroactive date and run-off needs. Cover for past work, and cover after you stop trading, both influence pricing.
- Excess level. A higher voluntary excess can reduce the premium, but raises what you pay on a claim.
A broker's job is to match the limit and wording to your real obligations — contractual, regulatory and professional-body requirements — so you are not over-insured or dangerously under-insured. Getting the structure right often matters more to your net cost than the deduction itself.
Want cover priced to your profession, with the tax-deductible premium confirmed clearly on your schedule? We will find the right limit and wording for your obligations.
Get a PI quote →Keeping it allowable: what to watch
The deduction holds as long as the cover is genuinely for your business activities. A few practical points:
- Keep the policy schedule and premium invoice with your business records.
- If a policy bundles personal and business elements, only the business portion is deductible — ask your broker for a clear breakdown.
- Record the premium in the accounting period it relates to, in line with normal accruals or cash-basis treatment.
- If in doubt about your specific position, confirm with your accountant — tax treatment can depend on your structure and how you report.
If you are reviewing cover or comparing quotes, our team can help you set the right limit and wording before you commit.
Common questions
Can I claim PI insurance if I am a sole trader?
Yes. Provided the cover is for your trade, the premium is an allowable business expense and you deduct it from your taxable profit on your Self Assessment return, reducing the Income Tax and Class 4 National Insurance you pay.
Does claiming the premium reduce my Corporation Tax?
For a limited company, the PI premium is a business cost that lowers taxable profit, so it reduces the Corporation Tax due. The exact benefit depends on the company's tax rate.
Is PI insurance ever not deductible?
If a policy also covers personal or non-business risks, only the business element is allowable. Cover that is not connected to your trade would not pass the "wholly and exclusively" test. When unsure, check with your accountant.
Apex Insurance Brokers Limited is authorised and regulated by the Financial Conduct Authority (FRN 724952). This guide is general information, not advice on a specific policy or a substitute for your policy wording.