Critical Illness Cover UK 2026/27: Tax-Free Lump Sum on Diagnosis
Critical illness cover 2026/27: a one-off tax-free lump sum on diagnosis of a defined serious illness. What it covers, vs life and income protection, combined cover, and who it suits.
A buyer's guide to critical illness cover for 2026/27. Critical illness cover pays a one-off, tax-free lump sum if you are diagnosed with one of the serious conditions named in your policy - commonly cancer, heart attack, stroke or multiple sclerosis - and survive a set period. This guide explains what it covers, how the ABI's minimum-standard definitions let you compare policies, the difference between critical illness cover, life insurance and income protection, how combined "life and critical illness" policies work (accelerated versus additional), the tax on the payout, and who the cover tends to suit. It is general information, not personal financial advice.
Critical illness cover at a glance
Pays out
One lump sum
Paid once on diagnosis, then the policy ends
Survival period
~10 to 14 days
You must survive this before a claim pays
Personal policy tax
Tax-free
On a policy you own and pay for yourself
Source: MoneyHelper - What is critical illness cover? (retrieved 2026-07-13).
What critical illness cover is
Critical illness cover supports you financially if you are diagnosed with one of the conditions included in the policy. The tax-free, one-off payment can be used however you need - to pay for treatment, to clear a mortgage or rent, or to make changes to your home such as wheelchair access. It pays out once, after which the policy ends (per MoneyHelper).
Most policies apply a survival period - usually around 10 to 14 days - meaning you must survive a set number of days after diagnosis before the payout is made. The survival period is what distinguishes critical illness cover (help while you are living with a serious condition) from life insurance (which pays on death). Always check the exact survival period in your own policy documents, because it varies between insurers.
What it typically covers - and what it may not
The conditions and illnesses covered vary significantly between insurers. The most comprehensive policies cover 50 or more different conditions; others are much more limited (per MoneyHelper). Commonly covered conditions include cancer, heart attack, stroke and multiple sclerosis.
To make policies comparable, the Association of British Insurers (ABI) publishes a Guide to Minimum Standards for Critical Illness Cover. It sets model definitions and minimum standards that ABI member insurers must meet for the most commonly covered conditions, while permitting individual insurers to offer cover that exceeds those minimums and to cover additional conditions beyond the core list (per the ABI Guide to Minimum Standards and Pinsent Masons' summary of the ABI Statement of Best Practice). Because a claim only pays if the diagnosis meets the policy's precise medical definition, the wording matters more than the headline number of conditions.
MoneyHelper suggests checking, before you buy, whether:
- the policy pays a reduced amount (for example 25% or 50% of the lump sum) for less serious illnesses;
- early stages of common cancers are covered - some policies will not pay out for them;
- you are covered for severe or permanent disability due to injury or illness.
Milder or early-stage conditions may pay less or be excluded, and pre-existing conditions you do not disclose are a common reason claims are refused. Read the condition definitions and exclusions carefully.
Critical illness vs life insurance vs income protection
These three products cover different risks and are often held together:
| Product | Triggered by | Pays |
|---|---|---|
| Critical illness cover | Diagnosis of a named serious condition (surviving the set period) | A single, one-off lump sum, then the policy ends |
| Life insurance | Death during the policy term | A lump sum to your dependants |
| Income protection | Being unable to work through illness or injury | A regular replacement income (typically 50% to 65% of pay) until you return to work, retire, die or the term ends |
Income protection detail per MoneyHelper - What is income protection insurance? (retrieved 2026-07-13). See the SalaryTax life insurance guide and income protection guide for each in depth.
Combined life + critical illness: accelerated vs additional
Critical illness cover is frequently sold bundled with life insurance as a single "life and critical illness" policy. There are two main ways these are structured, and the difference matters:
- Accelerated - the policy pays out on the first of death or a qualifying critical illness diagnosis, but not both. You can usually make only one claim; once a critical illness lump sum is paid, the policy (including the life cover) ends.
- Additional - the policy pays out on a critical illness diagnosis and the life cover remains in place, so a later death claim can still be made. This option is typically more expensive.
A standalone critical illness policy, held separately from life insurance, keeps the two claims independent. Which structure suits you depends on your budget and whether you want one combined payout or protection against both events. Structure detail per MoneyHelper insurance guidance and industry summaries (retrieved 2026-07-13).
Tax on the payout
If you take out a critical illness policy in your own name and pay the premiums from your own (already-taxed) income, any payout is normally tax-free. It is treated as compensation for a loss rather than as income, so it does not count as taxable income.
The position can differ for employer-provided or group cover. Premiums an employer pays on an employee's behalf are generally treated as a taxable benefit in kind for the employee, and where you and your employer share the cost the tax treatment can follow that split. Policies held in trust or provided through the workplace may also be treated differently. Tax rules can change - check the specific arrangement and, for anything material, take regulated advice. This is general information, not personal tax advice.
Is it worth it, and who it suits
Critical illness cover tends to make most sense for people who would face real financial pressure if a serious diagnosis stopped their income or created large extra costs. That commonly includes:
- homeowners with a mortgage that would be hard to service if they could not work;
- people with dependants who rely on their income;
- employees with little or no occupational sick pay beyond Statutory Sick Pay, and self-employed people with no employer safety net at all.
Whether it is worth the premium for you depends on your existing safety net - savings, employer benefits and any cover you already hold - your outgoings, and the price quoted for your age and health. Because critical illness cover, life insurance and income protection each solve a different problem, some people hold more than one. For a decision this size, consider regulated financial advice.
Related guides
- UK life insurance guide - lump sum paid on death; often bundled with critical illness cover.
- Income protection guide - regular replacement income when you cannot work.
- Business insurance for the self-employed - wider protection for people without an employer safety net.
- Statutory Sick Pay guide - the statutory floor many buyers are trying to top up.
Frequently asked questions
What is critical illness cover?
Critical illness cover pays a one-off, tax-free lump sum if you are diagnosed with one of the serious conditions listed in your policy and survive a set period (most policies have a "survival period" of around 10 to 14 days). It only pays out once, after which the policy ends. The money can be used for anything - paying off a mortgage, funding treatment, or adapting your home. Commonly covered conditions include cancer, heart attack, stroke and multiple sclerosis, but the exact list and the medical definition of each condition vary significantly between insurers. Critical illness cover is different from income protection (a regular replacement income while you cannot work) and from life insurance (a lump sum paid on death).
Is critical illness cover worth it?
Critical illness cover tends to suit people who would face financial hardship if they were diagnosed with a serious illness and lost their income or faced large extra costs - for example, people with a mortgage, dependants who rely on their income, or no meaningful employer sick pay beyond Statutory Sick Pay. A tax-free lump sum can clear a mortgage or cover treatment and adaptations at a point when your income may have stopped. Whether it is worth it for you depends on your existing safety net (savings, employer benefits, other cover), your outgoings and the premium quoted for your age and health. Many people hold it alongside life insurance and, separately, income protection because the three products cover different risks. There is no single right answer - review your own circumstances and consider regulated financial advice for a decision this size.
Is a critical illness payout taxed?
A payout from a critical illness policy you took out in your own name and paid for from your own (already-taxed) income is normally tax-free - it is treated as compensation for a loss rather than as income. The position can differ where the policy is provided or paid for by your employer. Premiums an employer pays on an employee's behalf are generally treated as a taxable benefit in kind, and where cost is shared the tax treatment can follow that split. Tax rules can change and policies held in trust or through the workplace may be treated differently, so check the specific arrangement. This is general information, not personal tax or financial advice.
What is the difference between critical illness and life insurance?
Life insurance pays a lump sum when you die, giving money to the people who depend on you. Critical illness cover pays a lump sum while you are still alive, if you are diagnosed with one of the serious conditions named in the policy and survive the required period. They cover different events - death versus a serious diagnosis - which is why they are often bought together. When bundled as a single "life and critical illness" policy the two are usually linked: an "accelerated" policy pays out once, on the first of death or a qualifying diagnosis, and then ends; an "additional" policy pays on a critical illness diagnosis while the life cover continues, and typically costs more.
What conditions does critical illness cover include?
The conditions vary significantly between insurers. The most comprehensive policies cover 50 or more conditions while others are much more limited. Commonly covered conditions include cancer, heart attack, stroke and multiple sclerosis. To help consumers compare products, the Association of British Insurers (ABI) publishes model definitions and minimum standards that its member insurers must meet for the most common conditions; insurers are free to cover more conditions than this core list and to use their own wording for anything beyond it. Because the medical definition of each condition determines whether a claim pays, the policy wording matters more than the headline number of conditions - always read how each condition is defined and what is excluded.
What is the difference between critical illness cover and income protection?
Critical illness cover pays a single, one-off lump sum if you are diagnosed with one of the specific serious conditions in the policy. Income protection is a longer-term policy that instead pays a regular, ongoing income if you cannot work because of illness or injury - typically replacing between 50% and 65% of your income - and it keeps paying until you can return to work, retire, die or the policy term ends, whichever comes first. In short, critical illness cover is triggered by a named diagnosis and pays once; income protection is triggered by being unable to work and pays regularly. Many people who rely on their earnings hold both, because a lump sum and a replacement income solve different problems.
What is a survival period on a critical illness policy?
The survival period is the minimum length of time you must live after being diagnosed before the policy will pay out. Most critical illness policies set this at around 10 to 14 days. Its purpose is to distinguish critical illness cover, which is designed to help you financially while you are living with a serious condition, from life insurance, which pays out on death. If you are diagnosed with a covered condition and survive the required period, a valid claim pays the lump sum and the policy then ends. Always check the exact survival period in your policy documents, as it varies between insurers.
Why might a critical illness claim not pay out in full?
A claim may be reduced or declined for several reasons. Milder or early-stage forms of a condition may pay only a proportion of the sum insured (for example 25% or 50%) or may not be covered at all - some policies will not pay for the early stages of certain common cancers. A claim can also fail if the diagnosis does not meet the precise medical definition the policy uses for that condition, if you did not survive the survival period, or if the illness relates to a pre-existing condition you did not disclose. Non-disclosure of relevant medical history when you applied is a common reason claims are refused. Reading the policy's condition definitions, exclusions and any partial-payment terms before you buy is the best protection against a surprise at claim time.