Critical illness cover
Critical illness cover pays a tax-free lump sum if you’re diagnosed with one of the serious conditions named in the policy. Many borrowers use it to clear the mortgage outright, securing the home against a health shock.
What it does
On diagnosis of a specified serious condition — such as certain cancers, heart attack or stroke — the policy pays a one-off, tax-free lump sum. There are no restrictions on how you use it, but it’s often set at a level that would repay the mortgage in full.
It’s frequently arranged alongside the mortgage for exactly that reason.
Why pair it with your mortgage
A serious illness can stop your income and add costs at the same time. Clearing the mortgage removes the largest fixed outgoing, letting you focus on recovery rather than repayments.
- Lump sum, paid tax-free on diagnosis.
- Can be set to match your outstanding mortgage balance.
- Often combined with life cover in one policy.
What to check
- Which conditions are covered, and the severity definitions.
- Whether it’s combined with, or separate from, life cover.
- Children’s cover, which many policies include.
The part that decides whether it pays
Critical illness policies pay for conditions on the insurer's list, where the diagnosis meets the policy's stated definition. That is the whole mechanism, and it is where most misunderstanding lives: the policy does not pay because you are seriously unwell. It pays because the condition is listed and the definition is met.
Lists and definitions vary between insurers, sometimes materially — one may cover a condition at an earlier stage than another, or include conditions a competitor omits. So two policies at similar premiums can differ substantially in what they would actually pay for. This is the rare case where the wording deserves more attention than the price.
How much should you cover?
Most people size it around the mortgage, so a diagnosis does not put the home at risk on top of everything else. From there, consider what a serious illness would actually cost you: time out of work, adaptations to the property, treatment not covered by the NHS, or simply the ability to stop worrying about money while you recover.
Contractors have a particular exposure here. There is no employer holding your role open and no occupational sick pay bridging the gap, so the lump sum may need to do more work than it would for someone employed. That argues for sizing it against a realistic recovery period, not just the loan balance.
Children's cover and other extras
Many policies include cover for your children as standard, typically paying a smaller lump sum if a child is diagnosed with a listed condition. It is worth knowing whether yours does, what the limits are, and at what age cover ends — these vary and are rarely front-of-brochure.
Other features to ask about: whether the policy pays a partial amount for less severe conditions, whether it can be increased later without new medical evidence, and whether it is written in trust so the money reaches the right person without delay. None of these change the headline premium much; all of them change what you get.
Critical illness cover, answered
Is critical illness cover the same as life insurance?+
No. Life insurance pays out on death; critical illness pays a lump sum if you’re diagnosed with a serious condition and survive. Many people hold both, sometimes combined in a single policy.
How much cover should I take?+
A common approach is to match the mortgage balance, so the loan can be cleared on diagnosis. Some choose more to cover lost income and treatment costs. We help you size it sensibly.
Does it cover every illness?+
No — only the specific conditions and severities defined in the policy. Reading those definitions matters, which is why advice helps you compare like for like.
Can I take critical illness cover with life insurance?+
Usually yes, and it is commonly arranged that way. It can be written as a combined policy paying out once on whichever happens first, or as two separate covers that can each pay. The combined version is cheaper; the separate version means a critical illness claim does not extinguish the life cover. Which suits you depends on what you are protecting against.
Will a pre-existing condition stop me getting cover?+
Not necessarily, but it will be taken into account. Insurers may exclude a related condition, charge a higher premium, or in some cases decline. Disclosure matters enormously here: an undisclosed condition is the most common reason a claim fails, so answer the medical questions fully even where you think something is irrelevant.