How to compare professional indemnity insurance quotes properly
Reviewed by Matthew Bartlett, Director, Apex Insurance Brokers Limited · Last reviewed 2026-08-05
The cheapest professional indemnity (PI) quote is rarely the most useful number on the page. Premium reflects the cover behind it, and a lower price often means a narrower policy, a higher excess, or a limit that runs out faster than you would expect. Comparing properly means normalising every quote to the same structure first, then letting price decide between genuinely equivalent options.
Start with the limit of indemnity — and how it is measured
The headline figure (commonly £1m, £2m or £5m) is only half the story. What matters just as much is the basis on which that limit applies:
- Any one claim: the full limit is available for each separate claim in the policy period. A £1m "any one claim" limit responds up to £1m per matter, however many arise.
- Aggregate: the limit is the total available across the whole year. Once claims and defence costs erode it, the cover is spent until renewal.
Also check whether defence costs are inside or in addition to the limit. If legal costs sit inside an aggregate limit, a single drawn-out dispute can consume much of your protection before any settlement is paid. Always compare like for like: a cheaper aggregate quote is not the same product as an "any one claim" quote at a higher price.
Check the retroactive date
PI is written on a claims-made basis, meaning the policy in force when a claim is made responds — not the policy in force when you did the work. The retroactive date sets how far back your past work is covered. Work carried out before that date is excluded, no matter how good the current limit looks.
When switching insurer, a quote that resets the retroactive date to today can quietly strip cover from years of past advice. A properly comparable quote should carry your retroactive date forward (often shown as "retroactive date: unlimited" or matching your first continuous PI policy). This is one of the most common ways a "cheaper" quote is actually worse.
Want quotes you can actually compare side by side? We line up cover, not just price.
Get a PI quote →Read the exclusions before the price
Exclusions are where identical-looking quotes diverge most. Two policies with the same limit can exclude very different things. Look closely at:
- Activity restrictions: some wordings only cover the professional activities you declared, so undeclared or new services may fall outside cover.
- Subcontractors and outsourced work: whether liability arising from your subcontractors is covered, and on what terms.
- Territorial and jurisdiction limits: where the work and any dispute can arise (for example UK only, or excluding US/Canada).
- Known circumstances: anything you were already aware of that could give rise to a claim is typically excluded — you must notify these before renewal.
- Cyber, dishonesty, or specific sector carve-outs: increasingly common and easy to miss.
A narrow, heavily-excluded policy is cheaper for a reason. Comparing quotes properly means reading the exclusions side by side, not skipping to the premium.
Weigh the excess and insurer strength
Two more factors change what a quote is really worth:
- The excess: the amount you pay towards each claim. A lower premium paired with a much higher excess shifts risk onto you. Check whether the excess applies to defence costs as well as damages.
- Insurer financial strength: a PI claim can surface years after the work. You want an insurer likely to be there and able to pay. Independent financial-strength ratings (such as those from AM Best, Standard & Poor's or Moody's) give a guide, and cover placed through the UK regulated market falls under Financial Services Compensation Scheme protection where the insurer is eligible. A broker can tell you which insurers stand behind each quote.
A quick side-by-side checklist
| What to compare | Why it matters |
|---|---|
| Limit basis | "Any one claim" vs "aggregate" changes how much cover survives a bad year. |
| Costs in/outside limit | Defence costs inside the limit reduce what's left to settle. |
| Retroactive date | Determines whether past work is covered at all. |
| Exclusions | Narrow wordings quietly remove cover you may rely on. |
| Excess | A low premium with a high excess shifts risk to you. |
| Insurer strength | The insurer must be able to pay a claim years later. |
What actually moves the price
Once cover is equivalent, the premium is driven by risk factors, not luck. The main ones are your profession and activities, fee income or turnover, the limit and excess you choose, your claims history, and the size and value of the contracts you take on. Higher-risk advice, larger contract values and higher limits push the premium up; a clean claims record and a sensible excess bring it down. A broker's job is to present your risk accurately so you are not overpaying for the same protection — and to spot where a small change in structure buys materially better cover.
If you would like quotes set out on a genuinely comparable basis, start a quote with Apex and we will do the like-for-like work for you.
Common questions
Is the cheapest PI quote ever the right choice?
Yes — but only once you have confirmed the cover is equivalent. If the limit basis, retroactive date, excess and exclusions all match a more expensive quote, the lower price is a genuine saving. The problem is comparing on price before checking those terms.
What is the single most overlooked point when comparing quotes?
The retroactive date. Because PI is claims-made, a quote that resets it can leave years of past work uninsured while still looking cheap. Always confirm your retroactive date is preserved.
Does using a broker cost more than going direct?
Not usually. A broker accesses insurer markets and standardises the terms so you compare like for like, and often secures broader cover for a similar outlay. The value is in matching cover to your actual risk, not just finding a headline price.
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.