Critical illness vs terminal illness cover

Critical illness cover pays a tax-free lump sum when you are diagnosed with a serious condition listed in your policy, such as cancer, heart attack or stroke. Terminal illness cover is different: it pays out the life cover early when a doctor confirms you have less than 12 months to live. The two are often confused, and sometimes sold together, but they trigger on different things and pay out in different ways.

The Financial Ombudsman Service describes critical illness cover as paying "a lump-sum cash payment if you develop a critical illness like cancer, heart failure or stroke"¹. Terminal illness cover, by contrast, pays out the full amount of life cover if you are expected to live less than 12 months². Many life insurance policies include terminal illness benefit at no extra cost, but not all do, so it is worth checking your documents³.

If you are trying to work out which cover you have, or which one you need, the key question is what triggers the payout. Critical illness cover triggers on a diagnosis from a list. Terminal illness cover triggers on a prognosis about how long you have left to live. A combined policy can pay out on either, but usually only once.

Critical illness cover pays a lump sum on diagnosis of a serious illness

Critical illness cover is a protection policy that pays a one-off lump sum when you are diagnosed with a condition on the insurer's list. The Financial Ombudsman Service says it pays "a lump-sum cash payment if you develop a critical illness like cancer, heart failure or stroke"¹. The payout is yours to use as you choose, whether that is replacing income, paying off a mortgage or covering medical costs.

The cover can be bought on its own or added to a life insurance policy⁷. It pays out regardless of whether the condition stops you from working, which distinguishes it from income protection⁸. The payout is a single lump sum, and the cover then ends⁴.

Critical illness policies come in two main types: level cover, where the payout stays the same, and decreasing cover, where it falls over time, often in line with a mortgage⁴. Premiums can be guaranteed, meaning the same monthly payment for the life of the policy, or reviewable, meaning they are reviewed, usually every five years, and are likely to go up over time⁹.

The illnesses covered and the amount paid out vary depending on the policy¹⁰. Some policies cover more than 100 conditions, though the exact list and the severity requirements differ between insurers¹¹.

Terminal illness cover: life expectancy under 12 months

Terminal illness cover is not usually sold as a standalone product. It is a feature built into many life insurance policies that allows the policy to pay out early if you are diagnosed with a condition that is expected to be fatal within 12 months⁴. The full amount of cover is paid at once, and you keep the money even if you live longer than expected².

Many life insurance policies include terminal illness benefit, which means the policy could pay out early if a doctor says you have less than 12 months to live³. Some joint life insurance policies include a terminal illness clause, allowing for a payout if one policyholder is diagnosed with a terminal illness and given less than 12 months to live¹².

The definition is consistent across providers. LV= describes terminal illness as "where death is expected within 12 months"¹³. Legal & General says it pays out if you are diagnosed with a terminal illness and your life expectancy is less than 12 months¹⁴. The Exeter states that terminal illness cover is included as part of your life insurance¹⁵.

Terminal illness cover is typically included at no added cost, but it is not always available in the last 12 to 18 months of the policy¹⁶. This is one of the limits that catches people out.

Critical illness or terminal illness cover: how each one pays out

The two covers pay out in different circumstances and at different times. Critical illness cover pays out when you are diagnosed with a condition on its list, which could be life-changing but not necessarily terminal¹⁷. Terminal illness cover pays out when a doctor confirms you have less than 12 months to live².

A combined life and critical illness policy pays out on whichever event happens first. Royal London explains that with one cover for life or critical illness, the policy "will pay out for either the life cover or the critical illness cover, which" occurs first⁵. If the critical illness claim is paid, that element of cover ends¹⁸.

The interaction between the two matters. If you wrap critical illness cover in with life insurance, the payout for death is often reduced if the insurer has already paid out for critical illness¹⁷. This means a combined policy may pay less on death than a standalone life insurance policy would.

Some combined policies pay out on a terminal illness diagnosis as well. Guardian1821 says its combined life and critical illness cover pays out if you are diagnosed with a critical illness, total permanent disability, a terminal illness where you are expected to live less than 12 months, or if you die¹⁹.

Conditions commonly covered by critical illness policies

All critical illness policies include cancer, heart attack and stroke¹. Beyond those three, insurers add conditions such as organ failure, multiple sclerosis, Alzheimer's disease, Parkinson's disease and traumatic head injury⁴. Scottish Widows says critical illness cover normally includes a number of serious illnesses and includes heart attacks, strokes and certain types of cancer²⁰.

The number of conditions covered varies. Some policies cover more than 100 illnesses that disable you or prevent you working at full capacity¹¹. But the headline number matters less than the severity requirements attached to each condition. Cancer cover, for example, can depend on the stage or grade of the cancer².

Critical illness policies typically will not cover being diagnosed with an illness outside of your policy term, if you pass away during the term, if you die within a certain number of days of receiving the diagnosis, or if you are diagnosed with an illness not explicitly covered by the insurer⁴. Other common exclusions are linked to aviation, criminal acts, drug abuse, failure to follow medical advice, hazardous sports and pastimes, HIV/AIDS, living abroad, self-inflicted injury, war and civil commotion²¹.

Many insurers will not cover pre-existing medical conditions, and existing diagnoses will not be covered under the policy²². This is why the application process matters: you need to disclose your medical history accurately.

Where terminal illness cover does not apply

Terminal illness cover has limits that critical illness cover does not. It is not included in all policies, so it is worth checking your documents³. Where it is included, it may not be available in the final months of the policy term.

TSB's policy documents state that terminal illness cover cannot be claimed after the life insured's death, or if the length of the policy is less than two years²³. Legal & General says terminal illness cover can't be claimed after your death¹⁴. This means the cover is designed to pay out while you are alive, not to replace a death claim.

Terminal illness cover is typically included at no added cost, but it is not always available in the last 12 to 18 months of the policy¹⁶. The reason is practical: near the end of the term, the policy is about to pay out anyway, so an early payout does not serve the same purpose.

Terminal illness cover is also different from the special rules for terminal illness that apply to some benefits. For Personal Independence Payment, the disability tests do not apply if the claim is on the grounds of a terminal illness²⁴. The past presence test does not apply if you are terminally ill, except for Carer's Allowance²⁵. These are separate from insurance and are administered by the Department for Work and Pensions.

Is a critical illness payout taxed?

If you pay for the cover yourself, the payout is not taxable. Cavendish Online states that if you have been paying for the cover yourself, you will not have to pay tax on a payment from a critical illness policy, and it is not classed as income²⁶. HSBC says critical illness cover payments are paid gross and are therefore not subject to income tax²⁷.

The tax treatment changes if your employer is involved. If your employer pays for your critical illness cover on your behalf and you make a valid claim, the payout is taxed through PAYE²⁶. If you share the cost with your employer, the tax-free proportion of the payout mirrors the proportion of the premium you pay. For example, if you pay half the premium, you pay tax on 50% of the payout²⁶.

Terminal illness payouts from a life insurance policy are also tax-free, in the same way as a death claim⁴. The payout is a single tax-free lump sum⁴.

Who provides critical illness and terminal illness cover

Critical illness cover is sold by most major UK insurers, either as a standalone policy or as an add-on to life insurance. Legal & General, LV=, Scottish Widows, Halifax, Bank of Scotland, Nationwide, HSBC, Post Office and Guardian1821 all offer critical illness cover or life insurance with terminal illness benefit²⁸.

Terminal illness cover is not usually a separate product. It is a feature of life insurance policies. Post Office includes terminal illness cover in all its life insurance policies as standard¹⁸. Legal & General includes terminal illness cover automatically on policies with a term of two years or more³². Guardian1821 life cover pays out if you die or are diagnosed with a terminal illness during the policy term³¹.

The market for protection insurance is regulated by the Financial Conduct Authority. In September 2026, the FCA published its final Pure Protection Market Study, which found that around 58% of adults have no life insurance, critical illness cover or income protection³³. The regulator concluded that competition works well for those with cover but stopped short of new rules³³.

If you are comparing policies, the key differences are the conditions covered, the severity requirements, the exclusions, and whether terminal illness cover is included. The payout amount and the premium depend on your age, health, smoking status and the amount of cover you choose.

What protects you

Critical illness and terminal illness cover are regulated by the Financial Conduct Authority. If you have a complaint about a policy or a claim, you can take it to the Financial Ombudsman Service. The ombudsman can look at disputes about whether a condition should be covered, whether you disclosed your medical history correctly, and how a claim was handled¹.

The Financial Ombudsman Service says all critical illness policies will include cancer, heart attack and stroke¹. If your insurer declines a claim on one of these conditions, that is a decision the ombudsman can review.

If you are diagnosed with a terminal illness, you may also be eligible for benefits. The special rules for terminal illness mean that healthcare professionals need to confirm they think you might have less than 12 months to live³⁴. This can speed up claims for Personal Independence Payment, Employment and Support Allowance, Universal Credit and Attendance Allowance³⁴. There are not extra benefits for carers when the person you support has a terminal or life-limiting illness³⁵.

For free, impartial help with money and benefits, you can contact MoneyHelper or a debt advice charity such as StepChange³⁶. Macmillan and Marie Curie also provide support for people affected by cancer and terminal illness².