Do forensic accountants need professional indemnity insurance?

Reviewed by Matthew Bartlett, Director, Apex Insurance Brokers Limited · Last reviewed 2026-08-05

The three reasons a forensic accountant needs PI

Whether PI is a hard requirement or a strong commercial necessity comes down to three overlapping tests: your professional body's rules, what your client or instructing party's contract demands, and the specific risk of the forensic work itself. Usually all three point the same way.

1. Regulatory and membership requirements

If you are a chartered or certified accountant in public practice, PI insurance is not optional. The main UK accountancy bodies make it a condition of membership for anyone holding a practising certificate or running a firm:

• ICAEW — the Professional Indemnity Insurance Regulations require member firms in public practice to hold PI cover, with a minimum limit of indemnity linked to gross fee income.
• ACCA — members and firms holding a practising certificate must maintain PI insurance that meets ACCA's minimum requirements.
• ICAS — requires firms in public practice to carry PI cover to prescribed minimum levels.

Forensic accounting delivered under a practising certificate falls squarely within these rules. If you are also on an expert-witness register — for example with The Academy of Experts or the Expert Witness Institute — adequate PI cover is expected of members and is part of demonstrating that you are properly resourced to act.

Even where an individual practises through an employer rather than their own firm, the employer's firm-level PI arrangement is what satisfies the regulator — so the requirement does not disappear, it simply sits at firm level.

2. Client and instructing-party contracts

Forensic accountants are rarely engaged on a handshake. Work typically arrives through instructing solicitors, corporate clients, insurers or the courts — and their engagement terms almost always require you to hold and evidence PI insurance to a stated minimum limit.

Common contractual triggers include:

• Solicitors' letters of instruction for expert-witness or litigation-support work.
• Panel or framework agreements with insurers, banks or corporates that specify a minimum limit of indemnity (often £1m, £2m or £5m depending on case value).
• Tender and procurement conditions for public-sector or larger commercial instructions.

Without cover in place, you may simply be unable to accept the instruction — the requirement is a gating condition, not a nice-to-have.

3. The specific service risk

Forensic accounting is high-stakes analytical work whose output is designed to be relied on — often by a court, a tribunal or the other side to a dispute. That reliance is exactly what creates the liability. Typical exposures include:

• Quantum errors: a miscalculated loss of profits, business valuation or personal-injury loss figure that materially changes the outcome of a claim.
• Expert-witness liability: since the Supreme Court decision in Jones v Kaney [2011] UKSC 13, expert witnesses no longer enjoy immunity from being sued in negligence for the work they do in litigation. A disappointed party can pursue you directly.
• Investigation and fraud work: missed evidence, flawed methodology, or a report that cannot withstand cross-examination.
• Breach of confidentiality or data errors in handling sensitive financial and personal information.
• Defamation or breach of duty allegations arising from findings against an individual or business.

A PI policy responds to claims that you were negligent, made an error, or breached a professional duty — covering legal defence costs (which can be substantial in litigation) as well as damages or settlements. Given the value of the disputes forensic accountants work on, a single claim can dwarf a year's fees.

When is PI compulsory versus strongly advisable?

What limit of indemnity should you consider?

The right limit is driven by the size of the disputes you work on and any minimum set by your regulator or instructing party. As a general guide, forensic practices commonly carry £1m, £2m or £5m of cover — but a case involving a large commercial loss quantification may warrant more. It is the potential claim value, not your fee, that sets the exposure. Check the minimum required by your professional body and by each instructing contract, and set your limit to the higher of the two. Speak to us about a limit that fits your caseload.

Two policy features matter especially for forensic work: cover must be on the correct civil liability or professional-services basis for expert-witness activity, and you should understand run-off cover — claims can surface years after a case closes, so ongoing or run-off cover protects work you did in the past even after you stop practising.

Common questions

Does expert-witness work need its own PI cover?
It needs to be within the scope of your policy. Expert-witness and litigation-support activity should be specifically disclosed to your insurer so it is covered — since Jones v Kaney removed expert immunity, this is a real exposure, not a theoretical one. Tell your broker the proportion of your work that is expert-witness led.

I'm employed by a firm — do I need my own policy?
Generally no, provided the firm holds adequate PI that covers the forensic services you deliver. The regulatory requirement is met at firm level. If you also take on separate instructions in your own name, you would need your own cover for that work.

How long should I keep cover after finishing a case?
Longer than you might expect. PI usually operates on a claims-made basis, so cover must be live when a claim is notified — not when you did the work. Because forensic findings can be challenged years later, maintaining continuous cover, and run-off cover if you cease practice, protects your historic work.

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.