Insurance for Accountants and Bookkeepers UK: What You Need

Why accountants and bookkeepers carry more risk than most firms

Accountants and bookkeepers sell judgement. A tax return, a set of statutory accounts, a VAT calculation or a payroll run can all carry six-figure consequences if the figures are wrong. Unlike a tradesperson, whose mistake is usually visible and physical, a finance professional's error can stay hidden for years until HMRC opens an enquiry or a lender pulls a facility. By then the client may have made decisions, paid the wrong tax, or missed a deadline, and the financial loss lands at the practitioner's door.

That is why the insurance conversation for this profession starts and ends with one product: professional indemnity. Everything else, from cyber to public liability, sits around it. The structure of cover is also shaped by the professional bodies. If you are a member of the Institute of Chartered Accountants in England and Wales (ICAEW), the Association of Chartered Certified Accountants (ACCA), or the Association of Accounting Technicians (AAT), your insurance is not just sensible: holding the right limits is a condition of your practising certificate or membership.

Professional indemnity: the primary risk

Professional indemnity insurance (PI) responds when a client alleges that your advice, service or work was negligent and that the negligence caused them a financial loss. For accountants and bookkeepers the typical triggers are familiar: a miscalculated tax liability, a missed allowance or relief, late filing that triggers penalties, an error in a set of accounts that misleads a buyer or lender, or incorrect payroll and pension submissions.

PI is written on a "claims made" basis. That is a critical detail. The policy that matters is the one in force on the day a claim is made against you, not the day you did the work. If you did a piece of work in 2023, your firm closed in 2025, and a client sues in 2027, you need a live policy in 2027 to respond. This is the reason run-off cover exists, and it is covered in detail below.

Cover usually includes defence costs as well as damages, which matters because even an unfounded allegation can cost thousands to defend. Most policies also extend to loss of documents, dishonesty of employees, and sometimes a degree of regulatory cover. Read the schedule carefully: exclusions for known circumstances, fraud by a principal, and work done outside the UK are common.

How professional bodies set PI minimums

Each accountancy body sets its own PI requirements, and they differ in how they calculate the minimum limit. The table below summarises the position as of 2026. Always confirm the current figure with your body directly, because minimum limits and the way they are indexed are reviewed periodically.

The common thread is that minimum cover is often linked to gross fee income rather than being a flat figure. A sole-trader bookkeeper turning over GBP 30,000 will face a far lower required limit than a firm billing GBP 500,000. If you are unsure which band you sit in, your professional body's compliance team will confirm it, and a specialist broker can quote to match.

Cyber insurance: protecting sensitive financial data

Accountants and bookkeepers are custodians of exactly the data criminals want: bank details, National Insurance numbers, payroll records, company financials and director identities. A single compromised email account can expose dozens of clients. Under UK GDPR and the Data Protection Act 2018, you are a data controller or processor with legal duties, and the Information Commissioner's Office (ICO) can investigate and fine for serious breaches.

Standard PI cover does not deal well with cyber events. A dedicated cyber policy typically covers breach response costs, forensic investigation, notification of affected clients, business interruption while systems are down, and increasingly the cost of dealing with ransomware. Many policies also fund legal support if the ICO becomes involved. For a small practice the premium is usually modest relative to the cost of even a minor incident, where forensic and notification bills alone can run into thousands.

Practical risk reduction matters too, and some insurers now require it. Multi-factor authentication on email and cloud accounting software, encrypted backups, and a clear incident plan are baseline expectations. Bookkeepers who rely heavily on cloud platforms should not assume the software provider's security removes their own liability for a compromised login.

Public liability: when clients visit your premises

Public liability insurance (PL) covers injury to a third party or damage to their property arising from your business. For a finance professional working entirely from home or remotely, PL is often a low priority. The picture changes if you have an office that clients visit, attend client premises to collect records, or share a serviced workspace.

If a client trips on a loose cable in your office, or you knock a laptop off a client's desk during a site visit, PL is the policy that responds. Limits of GBP 1 million to GBP 5 million are typical. Many landlords and serviced-office operators make PL a condition of the lease, so check your agreement. Note that if you employ anyone, even part-time admin support, employers' liability insurance is a separate legal requirement under the Employers' Liability (Compulsory Insurance) Act 1969, with very limited exceptions.

Run-off cover: the retirement and closure trap

Because PI is claims made, the moment you stop paying premiums your protection ends, even for work done years earlier. Run-off cover keeps a policy live after a firm closes, merges, or a practitioner retires, so that claims arising from past work are still met. This is one of the most overlooked liabilities in the profession.

The reason run-off matters is the limitation period. In England and Wales, a claim in negligence generally must be brought within six years, and in some cases the clock can extend under the latent damage rules. A retired accountant who cancels cover on their last day of trading is personally exposed to claims for the following six years or more. Professional bodies recognise this: ICAEW, ACCA and AAT all expect run-off cover to continue for a defined period, commonly six years, after a practice ceases.

Run-off is usually arranged as a single declining premium covering the run-off years, or as an annual renewal during the period. It is cheaper than active cover because no new work is being done, but it is not free, and it should be budgeted for as part of any exit or retirement plan. If a firm is sold or merged, the acquiring firm may agree to assume the run-off liability, but this must be documented, not assumed.

Building the right package

For most practices the sensible core is PI at or above the limit your professional body requires, cyber cover sized to your data exposure, and PL if you have any physical client contact. Employers' liability is added the moment you take on staff. Run-off is planned from day one, not bolted on at the end. A specialist broker who understands the accountancy bodies' rules is worth using, because matching the limit to your income band and confirming the policy satisfies your body's wording avoids a compliance failure at renewal.

Frequently Asked Questions

Do accountants need professional indemnity insurance?

Yes, in almost all cases. If you are a member of a recognised body such as ICAEW, ACCA or AAT and you practise, PI cover is a mandatory condition of your practising certificate or licence. Even unregulated accountants are strongly advised to hold it, because a single negligence claim can exceed the value of the business.

Does ACCA require PI insurance?

Yes. Under the ACCA Rulebook, holders of an ACCA practising certificate must hold professional indemnity insurance. The minimum limit is generally calculated as 2.5 times your gross fee income, subject to a minimum floor that rises with your income band. ACCA can request evidence of cover, so keep your schedule current.

What is run-off cover for accountants?

Run-off cover keeps a claims-made PI policy active after you stop trading, retire, or close the firm. Because claims can be made years after the work was done, run-off protects you against allegations relating to past services. Professional bodies typically expect it to continue for around six years after a practice ceases, matching the limitation period for negligence claims.

Do bookkeepers need cyber insurance?

It is highly advisable. Bookkeepers handle bank details, payroll data and other sensitive information protected by UK GDPR. A data breach can trigger notification costs, forensic investigation and potential ICO action. Cyber insurance funds the response and is usually inexpensive relative to the cost of even a minor incident, so most cloud-based bookkeepers should carry it.

How much PI cover does an accountant need?

It depends on your professional body and your gross fee income. ICAEW firms commonly need at least GBP 1.5 million per claim, while ACCA and AAT base the minimum on a multiple of fee income or a turnover band. The required figure is a floor, not a ceiling: many firms buy higher limits to reflect the size of contracts they handle. Confirm the current minimum with your body before renewing.