SME INSURANCE GUIDE
Professional Indemnity Insurance for Accountants UK
Accountants handling client money and tax advice face professional liability risks. This guide explains PI insurance requirements for accountants under ICAEW, ACCA and AAT rules.
TL;DR
- PI insurance is mandatory for accountants in practice under ICAEW, ACCA and AAT rules
- ICAEW sets a minimum indemnity floor of £100,000 for firms in public practice
- Policies are written on a claims-made basis -- run-off cover is essential on retirement or closure
- Employers liability is legally required if the practice employs staff
- Premiums are based on fee income, service types and claims history
Last reviewed: June 2026
Why Accountants Need Professional Indemnity Insurance
Professional indemnity (PI) insurance covers accountants against claims that their advice, calculations or services caused a client financial loss. A tax error, a miscalculated payroll, or incorrect financial statements can expose an accountant to significant legal liability. PI insurance covers the cost of defending such claims and any compensation awarded.
For accountants in practice, PI insurance is typically a mandatory condition of membership with professional bodies including the Institute of Chartered Accountants in England and Wales (ICAEW), the Association of Chartered Certified Accountants (ACCA), and the Association of Accounting Technicians (AAT).
Regulatory Requirements by Professional Body
ICAEW requires all firms engaged in public practice to hold PI insurance that meets minimum standards set out in its regulations. The minimum limit of indemnity is calculated based on fee income, with a floor of £100,000. ICAEW-regulated firms must obtain cover from an insurer approved by the ICAEW.
ACCA requires members in practice to hold PI insurance as a condition of their practising certificate. Minimum cover levels are set by ACCA and reviewed periodically. ACCA publishes a list of approved insurers that meet its requirements.
AAT members providing accountancy services to the public must hold PI insurance as a condition of their AAT licence. AAT sets minimum indemnity limits and requires members to maintain run-off cover for a period after ceasing practice.
What Professional Indemnity Insurance Covers
PI insurance for accountants typically covers claims arising from negligent advice or services, errors in tax returns or financial statements, failure to meet filing deadlines, breach of professional duty, and defamation arising from professional services. Most policies cover legal defence costs in addition to any compensation awarded.
PI policies are written on a claims-made basis, meaning the policy in force when the claim is made responds to the claim. This makes run-off cover important when an accountant retires or closes their practice -- without it, claims arising from past work would be uninsured.
How Much PI Cover Does an Accountant Need
The appropriate level of cover depends on the nature and scale of the work undertaken. An accountant advising on large corporate transactions needs materially higher limits than one preparing self-assessment returns for individuals. Professional body minimums are a floor, not a recommended level.
Public Liability and Employers Liability
In addition to PI insurance, accountancy practices with client-facing offices should hold public liability insurance. Practices with employees are legally required to hold employers liability insurance under the Employers Liability (Compulsory Insurance) Act 1969.
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Disclaimer
This guide is for general information only and does not constitute legal, financial or insurance advice. Cover requirements depend on individual circumstances. Always read policy terms carefully before purchasing. Kaeltripton is an independent editorial publisher, not regulated by the FCA.
Frequently Asked Questions
Is professional indemnity insurance compulsory for accountants?
PI insurance is mandatory for accountants in practice who are members of ICAEW, ACCA or AAT. Each body sets its own minimum requirements. Accountants working solely as employees may be covered by their employer's policy.
What is run-off cover for accountants?
Run-off cover provides PI insurance for claims made after an accountant has ceased practice, for work done while in practice. Most professional bodies require members to maintain run-off cover for a minimum period after retirement or closure.
How is professional indemnity insurance calculated for accountants?
Premiums are based on annual fee income, the types of services provided, claims history, and the limit of indemnity required. ICAEW sets a minimum indemnity floor of £100,000 for firms in public practice.
Does PI insurance cover HMRC investigations?
Standard PI insurance does not cover the cost of responding to HMRC enquiries into the accountant's own tax affairs. Some policies include cover for professional representation during HMRC enquiries into clients' affairs where the accountant is acting as agent.
