B · Registrations & compliance
Professional Indemnity Insurance for Accountants: Costs and Cover
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Quick answer
Professional indemnity (PI) insurance covers claims arising from mistakes, negligent advice or omissions in your accountancy work. Most professional bodies set minimum cover levels linked to your firm's fee income, and cover must continue after you stop practising through run-off cover. Premiums vary by firm size, services offered and claims history [VERIFY exact figures with a broker].
Key takeaways
- PI insurance is compulsory for members of ICAEW, ACCA, AAT and most other professional bodies offering public practice services.
- Minimum cover levels are usually set as a multiple of your annual fee income, with a set floor amount.
- Run-off cover protects you and former clients for claims made after you stop practising or retire.
- Higher-risk services — insolvency, tax planning schemes, audit — typically increase premiums.
- Get quotes from a broker experienced in accountancy PI rather than a generic business insurance provider.
What does professional indemnity insurance cover?
PI insurance covers the cost of defending and settling claims that a client (or third party) has suffered a financial loss because of negligent advice, an error, or an omission in the professional services you provided.
A typical claim scenario is a missed deadline that leads to a penalty, incorrect tax advice that costs a client money, or an error in accounts that leads to a bad business decision. PI covers your legal defence costs as well as any damages or settlement, up to your policy limit.
Is PI insurance a legal or professional requirement?
It is not a general legal requirement for accountants in the way AML supervision is, but nearly all professional bodies make it a mandatory condition of holding a practising certificate.
ICAEW, ACCA and AAT all require members in public practice to hold adequate PI cover meeting the body's minimum terms. Bookkeepers registered with ICB or unaffiliated tax advisers without a body requiring it may not be legally forced to hold cover, but taking it on is strongly advisable given the personal financial exposure of an uninsured claim.
What are the minimum cover levels?
Most bodies set minimum cover as a multiple of your gross annual fee income, subject to a minimum floor amount, with the specific formula varying by body.
| Body | General approach |
|---|---|
| ICAEW | Minimum cover linked to fee income, with a defined minimum floor — check current ICAEW minimum terms for the exact figures [VERIFY] |
| ACCA | Minimum cover based on fee income bands, with a set minimum sum insured [VERIFY] |
| AAT | Requires adequate PI cover for licensed members in practice, with minimum terms set out in AAT's guidance [VERIFY] |
Exact minimum sums insured and fee-income multiples change periodically — always check your professional body's current minimum terms of cover document rather than relying on a fixed figure.
What is run-off cover and when do I need it?
Run-off cover is PI insurance that continues after you stop practising, retire, sell your practice or cease trading, protecting you against claims made in the future for work carried out while you were practising.
Because a client might not discover a problem with historic advice for several years, most professional bodies require a minimum period of run-off cover — commonly around six years — after you cease to practise. This is an important, and sometimes overlooked, cost to budget for when winding down or selling a practice.
What kinds of claims typically arise for accountants?
Common claim triggers include missed filing deadlines, incorrect tax advice, errors in accounts preparation, and disputes over the scope of work agreed with a client.
- A missed Companies House or CT filing deadline resulting in penalties passed on to the client
- Incorrect VAT or capital gains tax advice leading to an unexpected liability
- A dispute over whether a piece of work was within the agreed engagement scope
- Errors in payroll processing causing financial loss to employees or the client
This is one reason a clear, up-to-date engagement letter matters as much as the insurance itself — scope disputes are a recurring theme in claims, and a well-drafted letter of engagement is often the first line of defence.
How do I choose the right policy and broker?
Use a broker experienced specifically in accountancy PI rather than a general business insurance broker, and check the policy meets your professional body's minimum terms exactly.
- Confirm your professional body's current minimum terms document before shopping around
- Get quotes from at least two or three brokers who specialise in accountancy or professional services PI
- Disclose your full range of services accurately — undisclosed higher-risk work can invalidate cover
- Check the excess level and how it applies per claim
- Ask specifically about run-off cover terms and cost if you plan to sell or retire within a few years
How Remindoo helps
A large share of PI claims trace back to disagreements about what was actually agreed, which is why a clear, signed engagement letter is one of the most practical risk-reduction tools available to a small practice, alongside the insurance itself. Remindoo's engagement letter templates with online e-signature help make sure every client relationship has a properly scoped, signed record of what you agreed to do, reducing the chance of a scope dispute turning into a claim. Automated reminders can also be set for your annual PI renewal date, so it sits alongside your other compliance deadlines rather than being left to arrive as a surprise renewal notice from your insurer.
Frequently asked questions
Is PI insurance a legal requirement for all accountants?
Not by general law, but it is a mandatory condition of membership for practising members of ICAEW, ACCA, AAT and most other bodies, making it effectively compulsory for the vast majority of practising accountants.
How much PI cover do I need?
This depends on your professional body's minimum terms, which are usually linked to your fee income, subject to a minimum floor amount. Check your specific body's current guidance rather than assuming a figure.
What is run-off cover and how long do I need it for?
Run-off cover continues your PI protection after you stop practising. Many professional bodies expect a minimum period, commonly cited as around six years, though you should confirm the current requirement with your body.
Does PI cover deliberate wrongdoing or fraud?
No — PI insurance covers negligence, errors and omissions, not deliberate dishonest acts, which are typically excluded from cover entirely.
Will my premium go up after a claim?
Generally yes, a claim or even a notified circumstance that could become a claim will usually affect your premium at the next renewal, sometimes significantly.
Can I get PI cover if I offer insolvency or audit services?
Yes, but these are typically treated as higher-risk services by insurers and will usually increase your premium and may require specific disclosure at proposal stage.
Do sole traders and bookkeepers need PI insurance too?
It is strongly advisable even where not strictly mandated, since an individual bookkeeper or sole trader accountant is personally exposed to the full cost of an uninsured claim.
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Sources
Last updated 23 September 2026. General guidance, not legal or regulatory advice. Check with your professional body.
