How much is professional indemnity insurance for bookkeepers?
Reviewed by Apex Insurance Brokers · Last reviewed 2026-08-05
If you keep the books for other businesses, one overlooked figure or a mispostedreconciliation can lead a client to allege they suffered a financial loss. Professional indemnity insurance responds to those allegations — covering your legal defence costs and any damages you become liable to pay. The question every bookkeeper asks is simply: what will it cost me? The honest answer is that it depends on your risk profile, so it helps to understand the levers that move the number.
Why there is no flat price
Insurers price PI on the specific risk you present, not on a category. Two bookkeepers with identical turnover can be quoted very differently if one only does data entry and bank reconciliation while the other prepares VAT returns, runs payroll and offers advisory work. Rather than chase a headline figure, focus on the drivers below — they explain almost all of the variation you will see between quotes.
The main cost drivers
- Fee income / turnover. This is the single biggest factor. Insurers use your annual fee income as a proxy for how much work you handle and, therefore, how much could go wrong. As your practice grows, expect your premium to rise with it.
- The activities you perform. Basic bookkeeping and reconciliation sit at the lower-risk end. Adding VAT returns, payroll, CIS, credit control, management accounts or any tax or advisory element increases the exposure — and the premium — because the potential for a costly error grows.
- The cover limit you choose. A higher limit of indemnity (for example moving from £1m to £5m) costs more because the insurer is on risk for a larger maximum payout. The right limit depends on your clients' size and any contractual requirements they impose.
- Your claims history. A clean record helps. Past claims or circumstances that could give rise to a claim will typically increase the premium, as they signal higher risk to the underwriter.
- Sector and client risk. Working for large corporates, regulated firms or clients in higher-risk sectors carries more exposure than serving small local businesses. The size and nature of your typical client feeds directly into the price.
- Experience, qualifications and controls. Membership of a recognised body such as the ICB or AAT, relevant experience, and good internal checks (engagement letters, review processes) can all present you as a lower risk.
See what your own risk profile actually costs — not a generic estimate.
Get a PI quote →Choosing your limit of indemnity
The limit of indemnity is the most a policy will pay in a covered claim, and it is one of the few drivers fully within your control. Bookkeepers commonly consider limits at three broad levels:
| Cover limit | Typically suits |
|---|---|
| £1m | Sole traders and small practices with smaller local clients and lower fee income. |
| £2m | Growing practices, or where clients or contracts specify a minimum level of cover. |
| £5m | Firms serving larger clients, handling higher-value transactions, or facing higher contractual requirements. |
These are illustrative options, not recommendations. A higher limit raises the premium but buys more protection; too low a limit can leave you exposed. Check whether any client contracts, or a professional body you belong to, set a minimum — and remember PI is usually written on a “claims made” basis, so the policy in force when a claim is made responds, which is why continuous cover matters.
What else the policy should cover
Price is only meaningful alongside what you are actually buying. When comparing quotes, look beyond the headline premium at:
- The excess — the amount you pay towards each claim. A higher excess can lower the premium but increases your out-of-pocket cost if you claim.
- Retroactive cover — whether work done before the policy started is covered.
- Defence costs — whether legal costs are included within or on top of the limit.
- Scope of activities — that every service you provide is listed, so a claim isn't declined for falling outside the described business.
A policy that looks cheaper may simply be narrower. The cheapest premium is a false economy if it doesn't respond when you need it.
How a broker helps you get the right price
Because bookkeepers' PI is priced on individual risk, presentation matters. A broker's job is to describe your practice accurately and favourably to insurers, match you to underwriters who understand bookkeeping and accountancy risks, and make sure the cover limit and terms genuinely fit your work — rather than leaving you to guess from an online form.
At Apex we handle that process for you, comparing suitable options and explaining the trade-offs so the premium you pay reflects real, well-fitted cover. If your circumstances change — new services, a bigger client, higher turnover — we help you adjust the policy so you're neither under-insured nor over-paying. Start your PI quote here.
Common questions
Is professional indemnity insurance a legal requirement for bookkeepers?
It is not required by law for bookkeepers generally. However, many professional bodies — and some clients through their contracts — require you to hold PI cover, so in practice it is often effectively mandatory to trade.
Will my premium go up as my practice grows?
Usually, yes. Because fee income is a primary rating factor, higher turnover and additional services generally increase the premium. It's worth reviewing your cover at each renewal so the limit and terms keep pace with the work you actually do.
Does adding payroll or VAT work change the cost?
It can. These activities carry more exposure than basic bookkeeping, so they typically push the premium up — and they should always be declared, so a related claim isn't refused for falling outside your described activities.
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.