What happens at the point you apply for critical illness cover?

When you apply, the insurer asks questions about your health, lifestyle and family history, and prices the risk from your answers. For larger sums or more complex medical histories, it may ask for a GP report before offering terms. This stage sets the premium you will pay and the definitions that will later govern any claim. The written record of what you were asked and how you answered becomes important only later, at claim, so keep a copy of your answers alongside the policy documents from the outset.

What changes once a critical illness policy is up and running?

Once cover is in place, you pay the premium each month until a claim or the end of the term. How that premium behaves depends on the type chosen: a guaranteed premium stays fixed for the whole term, while a reviewable premium can be re-rated by the insurer at set intervals, which can make an initially cheaper policy more expensive later. Nothing about the conditions covered changes during this stage. Keeping payments up to date matters, because a lapsed policy provides no cover and returns no money.

What evidence does an insurer need when a critical illness claim is made?

You notify the insurer of the diagnosis and provide medical evidence, which the insurer usually obtains directly from your consultant. That evidence is then tested against the written definition for the condition — not against the diagnosis name alone. Most policies also require you to survive a set period after diagnosis before the pay-out is released. Because this stage relies on documentation gathered long before the claim, including your original application answers, keeping records from day one makes the process faster and reduces the chance of a dispute.

Do critical illness policies actually pay out?

The large majority of protection claims are paid: ABI and GRiD data shows 97.9 per cent of individual protection claims were paid in 2024, a record year when £8 billion was paid across all protection policies, including £1.3 billion of critical illness claims at an average pay-out of £67,600. Trade reporting puts the critical-illness acceptance rate at 90.2 per cent. Failed claims usually involve non-disclosure or a diagnosis not meeting the policy definition. The Financial Ombudsman Service can review a declined claim free of charge.

What conditions does critical illness cover include?

Every policy lists its own conditions, and the list — plus the written definition of each one — is what governs a claim, not the condition’s name. As a minimum, critical illness insurance must cover cancer, heart attack and stroke and the ABI’s minimum standards largely standardise definitions. Cancer is the most common single cause of claims, accounting for 62 per cent of critical illness claims in 2024. Beyond the core, insurers add further defined conditions, and many policies pay smaller partial payments for less severe diagnoses without ending the main cover.

Is a critical illness pay-out taxed?

A critical illness pay-out on a personal policy is generally paid free of income tax and capital gains tax, because it is an insurance benefit rather than income or a gain. Because you receive the money while alive, inheritance tax is not normally in play in the way it is for life insurance — though if the pay-out sits in your estate at death, it forms part of the estate like any other asset. Business or employer-paid cover can differ; confirm with gov.uk or a qualified tax adviser.

Can I get critical illness cover if I have had health problems?

Often yes, but the outcome depends on the condition, its severity and how long ago it was. At application the insurer asks health and lifestyle questions; your duty under the Consumer Insurance (Disclosure and Representations) Act 2012 is to take reasonable care to answer accurately The insurer may offer standard terms, apply an exclusion for the specific condition, load the premium, or decline. Our pre-existing conditions guide walks through the underwriting outcomes in detail.

What is the difference between critical illness cover and income protection?

Critical illness cover pays a one-off, tax-free lump sum when you are diagnosed with a condition that meets the policy definition — a fixed list of serious conditions. Income protection pays a regular tax-free monthly income if you cannot work because of any illness or injury, defined or not after a waiting period. They answer different questions: the lump sum clears debts and funds one-off costs, while income protection replaces the monthly pay packet. Our full comparison works through the trade-offs, including cost and claims evidence.

Can I claim more than once on a critical illness policy?

On most policies the main claim ends the contract: once the full sum assured is paid, the cover is spent — and on combined life and critical illness policies a critical illness pay-out usually ends the life cover too. Partial payments for additional, less severe conditions are the exception: they typically pay a capped percentage without ending the main cover, and some policies allow several. The claims section of the wording states exactly how many claims each type allows.

Critical illness

What is critical illness cover, and how does it work in the UK?

The short answer

Critical illness cover pays a tax-free lump sum if you are diagnosed with a condition that meets the written definition in your policy. You pay a monthly premium; the money is paid to you while you are alive, to use however you need. The policy definition — not the condition’s name — decides whether a claim is paid.

Written by Stuart Hendy. Reviewed by Emma Leadbetter.

Published 15 September 2026. Last reviewed 15 September 2026. Next review due 15 December 2026.

Regulator: Financial Conduct Authority ^[1]
Average CI claim, 2024: £67,600 ^[14]
Most common CI claim cause: Cancer ^[6]
Complaints route: Financial Ombudsman ^[4]

What to know about how critical illness cover works

A policy’s life runs through three stages: application, the ongoing term, and claim. Read more
At application the insurer prices your health, lifestyle and family history, sometimes requesting a GP report. Read more
During the term, guaranteed premiums stay fixed while reviewable premiums can be re-rated at set intervals. Read more
At claim, medical evidence is tested against the written definition before any survival period runs. Read more

What the contract actually does

Critical illness cover is a contract between you and an insurer. In exchange for the premium, the insurer agrees to pay a tax-free lump sum — the sum assured — if you are diagnosed with a condition that meets the written policy definition while the cover is in force. The money is yours to use however the situation demands: clearing a mortgage, replacing lost income, funding home adaptations or private costs the NHS does not carry. Standard cover has no savings element: if the policy ends without a claim, nothing is returned. Before you buy, the FCA’s conduct rules require the insurer to give you pre-contract information — the Insurance Product Information Document and the full wording — and a statutory cancellation period afterwards. ^[2]

Two structural points shape everything else. First, the definition governs: a diagnosis that falls short of the written definition is declined even where the illness is genuine, which is why the wording matters more than the headline condition list. Second, most policies include a short survival period after diagnosis before a claim is payable, keeping the product distinct from life insurance. The FCA’s Consumer Duty requires insurers to design, price and explain products to deliver good outcomes for retail customers. ^[3] This guide stays on how critical illness cover works.

What the cover pays for

Cancer, heart attack and stroke form the core of every critical illness policy — the Financial Ombudsman Service confirms these three are the regulatory minimum, and that the Association of British Insurers’ guide to minimum standards sets the list of illnesses policies should cover, with definitions generally standardised across the industry. ^[11] Cancer dominates claims: it accounted for 62 per cent of critical illness claims in 2024, when critical illness pay-outs reached £1.3 billion at an average of £67,600 per claim. ^[14] The cover question matters because the underlying risk is common: Cancer Research UK estimates that one in two people born in the UK in 1961 will be diagnosed with cancer during their lifetime. ^[7] Beyond the core conditions, insurers add further defined conditions, and many policies pay partial payments for less severe diagnoses without ending the main cover. Most adult policies also include automatic cover for children at a capped amount — Legal & General’s published terms, for example, include it automatically at the lower of 50 per cent of the cover amount or £25,000. ^[12] This guide discusses conditions only as they relate to cover and claims — for anything about symptoms, diagnosis or treatment, see the NHS.

Thinking about how critical illness cover works

What works well

A fixed premium buys a defined, documented lump-sum pay-out.
The pay-out is yours to use however the situation demands.
Disclosure law gives proportionate protection if answers are honest.

What to watch

The definition, not the diagnosis alone, decides the claim.
A lapsed policy leaves no cover and no refund.
The summary of cover is not the contract — the full wording is.

From application to claim

The life of a policy has three stages. At application you answer questions on health, lifestyle and family history, and the insurer prices the risk — sometimes requesting a GP report for larger sums or complex histories. During the term you pay the premium; on guaranteed premiums the price is fixed, on reviewable premiums it can be re-rated at set intervals. At claim, you notify the insurer of the diagnosis, supply medical evidence — the insurer usually obtains confirmation directly from your consultant — and the insurer tests the diagnosis against the written definition. Most policies also require you to survive a short period after diagnosis before the pay-out is made. Each stage is documented, and that written record — not the marketing summary — is what governs if a dispute arises later.

Keep the full wording with your important documents and make sure someone in your household knows the policy exists — claims are made by ill people or their families, not by paperwork. Whatever the specifics of how critical illness cover works, the discipline that protects you is always the same: get the insurer’s position in writing, keep the documents with the policy, and make sure the people who would help you claim know the policy exists and where the paperwork lives.

Critical illness, sick pay and the safety net

Critical illness cover sits inside a wider financial safety net, and it helps to see what the other layers provide. Employed people who are too ill to work can qualify for Statutory Sick Pay — £123.25 a week at the time of writing, payable by the employer for up to 28 weeks to eligible employees. ^[8] That figure is the context for the gap a lump sum is designed to fill: outgoings rarely pause while income does. Income protection replaces a monthly income for any illness or injury rather than a defined list; critical illness cover pays a single lump sum for defined conditions only; and life insurance pays others after death. The products are complementary, not interchangeable — our critical illness versus income protection guide works through the comparison, and life insurance versus critical illness cover covers the other half of the picture.

Related guides

Common questions

What happens at the point you apply for critical illness cover?: When you apply, the insurer asks questions about your health, lifestyle and family history, and prices the risk from your answers. For larger sums or more complex medical histories, it may ask for a GP report before offering terms. This stage sets the premium you will pay and the definitions that will later govern any claim. The written record of what you were asked and how you answered becomes important only later, at claim, so keep a copy of your answers alongside the policy documents from the outset.
What changes once a critical illness policy is up and running?: Once cover is in place, you pay the premium each month until a claim or the end of the term. How that premium behaves depends on the type chosen: a guaranteed premium stays fixed for the whole term, while a reviewable premium can be re-rated by the insurer at set intervals, which can make an initially cheaper policy more expensive later. Nothing about the conditions covered changes during this stage. Keeping payments up to date matters, because a lapsed policy provides no cover and returns no money.
What evidence does an insurer need when a critical illness claim is made?: You notify the insurer of the diagnosis and provide medical evidence, which the insurer usually obtains directly from your consultant. That evidence is then tested against the written definition for the condition — not against the diagnosis name alone. Most policies also require you to survive a set period after diagnosis before the pay-out is released. Because this stage relies on documentation gathered long before the claim, including your original application answers, keeping records from day one makes the process faster and reduces the chance of a dispute.
Do critical illness policies actually pay out?: The large majority of protection claims are paid: ABI and GRiD data shows 97.9 per cent of individual protection claims were paid in 2024, a record year when £8 billion was paid across all protection policies, including £1.3 billion of critical illness claims at an average pay-out of £67,600. ^[14] Trade reporting puts the critical-illness acceptance rate at 90.2 per cent. ^[15] Failed claims usually involve non-disclosure or a diagnosis not meeting the policy definition. ^[14]^[9]^[10] The Financial Ombudsman Service can review a declined claim free of charge. ^[4]
What conditions does critical illness cover include?: Every policy lists its own conditions, and the list — plus the written definition of each one — is what governs a claim, not the condition’s name. As a minimum, critical illness insurance must cover cancer, heart attack and stroke and the ABI’s minimum standards largely standardise definitions. ^[11] Cancer is the most common single cause of claims, accounting for 62 per cent of critical illness claims in 2024. ^[14] Beyond the core, insurers add further defined conditions, and many policies pay smaller partial payments for less severe diagnoses without ending the main cover.
Is a critical illness pay-out taxed?: A critical illness pay-out on a personal policy is generally paid free of income tax and capital gains tax, because it is an insurance benefit rather than income or a gain. Because you receive the money while alive, inheritance tax is not normally in play in the way it is for life insurance — though if the pay-out sits in your estate at death, it forms part of the estate like any other asset. Business or employer-paid cover can differ; confirm with gov.uk or a qualified tax adviser.
Can I get critical illness cover if I have had health problems?: Often yes, but the outcome depends on the condition, its severity and how long ago it was. At application the insurer asks health and lifestyle questions; your duty under the Consumer Insurance (Disclosure and Representations) Act 2012 is to take reasonable care to answer accurately ^[5] The insurer may offer standard terms, apply an exclusion for the specific condition, load the premium, or decline. Our pre-existing conditions guide walks through the underwriting outcomes in detail.
What is the difference between critical illness cover and income protection?: Critical illness cover pays a one-off, tax-free lump sum when you are diagnosed with a condition that meets the policy definition — a fixed list of serious conditions. Income protection pays a regular tax-free monthly income if you cannot work because of any illness or injury, defined or not after a waiting period. ^[13] They answer different questions: the lump sum clears debts and funds one-off costs, while income protection replaces the monthly pay packet. Our full comparison works through the trade-offs, including cost and claims evidence.
Can I claim more than once on a critical illness policy?: On most policies the main claim ends the contract: once the full sum assured is paid, the cover is spent — and on combined life and critical illness policies a critical illness pay-out usually ends the life cover too. Partial payments for additional, less severe conditions are the exception: they typically pay a capped percentage without ending the main cover, and some policies allow several. The claims section of the wording states exactly how many claims each type allows.

Sources

Financial Conduct Authority. About the FCA. Accessed 15 September 2026 (primary source)
Financial Conduct Authority. ICOBS: Insurance Conduct of Business (FCA Handbook). Accessed 15 September 2026 (primary source)
Financial Conduct Authority. The Consumer Duty. Accessed 15 September 2026 (primary source)
Financial Ombudsman Service. Annual complaints data and insight 2024/25. 2 July 2025 (primary source)
UK Parliament (legislation.gov.uk). Consumer Insurance (Disclosure and Representations) Act 2012. Enacted 8 March 2012 (primary source)
Association of British Insurers and GRiD, reported by Cover Magazine. £7.34bn paid out by protection insurers in 2023. Accessed 15 September 2026 (primary source)
Cancer Research UK. Lifetime risk of cancer — all cancers combined. Accessed 15 September 2026 (primary source)
GOV.UK. Statutory Sick Pay. Accessed 15 September 2026 (primary source)
Financial Ombudsman Service. Final decision DRN-6204112 (critical illness claim declined — CIDRA qualifying misrepresentation). Accessed 15 September 2026 (primary source)
Financial Ombudsman Service. Final decision DRN-6459846 (joint life and critical illness claim declined — application accuracy). Accessed 15 September 2026 (primary source)
Financial Ombudsman Service. Critical illness cover — guidance for businesses. Accessed 15 September 2026 (primary source)
Legal & General. Children's Critical Illness Cover — additional benefits. Accessed 15 September 2026 (primary source)
Which? Money. What is critical illness cover?. Accessed 15 September 2026 (primary source)
Association of British Insurers and GRiD, reported by Cover Magazine. Insurers paid £8bn in protection claims in 2024. Accessed 15 September 2026 (primary source)
Association of British Insurers and GRiD, reported by Cover Magazine. Protection insurers paid £7.84bn in 2025. Accessed 15 September 2026 (primary source)