Income Protection vs Critical Illness Cover: What's the Difference? (UK Guide)
"Income protection" and "critical illness cover" get mentioned together when sorting finances around a house move — and mixed up. Both are protection insurance, but pay out very differently.
This guide explains what each covers, what the latest claims data shows, and how to think about whether either fits you. General information, not a recommendation to buy either product.
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Income protection pays a regular, ongoing income if you can't work because of illness or injury. Critical illness cover pays a one-off, tax-free lump sum if diagnosed with a specific serious illness named on your policy.
One replaces income over time; the other pays a single sum against a defined list of conditions.
Quick comparison
| Income protection | Critical illness cover | |
|---|---|---|
| Payout type | Regular ongoing income | One-off lump sum |
| What triggers payment | Unable to work due to illness/injury | Diagnosed with a named condition meeting the policy's definition |
| Typical payout level | Commonly 50%–65% of income, per MoneyHelper | A fixed sum chosen at outset |
| How long it pays | Until return to work, policy ends, retirement or death, whichever first | Single payment; cover then ends |
| Claim more than once? | Yes, while policy lasts | No, one-off |
| Common waiting period | Often 4, 13, 26 weeks, or a year | None in same sense; paid on confirmed diagnosis |
What each one actually covers
Income protection generally covers most illnesses or injuries that leave you unable to work, short or long term, rather than a fixed list of named conditions.
Critical illness cover only pays for conditions named in your policy — common examples: heart attack, stroke, certain cancers, multiple sclerosis, Parkinson's, permanent disability — though the exact list varies by insurer.
Many policies exclude things people assume are covered, like non-invasive cancers or high blood pressure, and conditions often need a specified severity level before paying out.
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What the 2025 claims data actually shows
The Association of British Insurers (ABI), the trade body collecting data across UK protection insurers, published 2025 claims figures in June 2026. Insurers paid out £7.84 billion across all protection products in 2025.
| Metric | Income protection | Critical illness cover |
|---|---|---|
| Total paid in 2025 | £209 million | £1.25 billion |
| Average claim/payout | £10,700 | £67,000 |
| Claims accepted | 79% | 90.2% |
| Notable detail | Mental health claims were 19% of claims paid | Cancer was 65% of claims |
These are industry averages, not a guarantee for any policy — rates and payouts vary by insurer.
Do you need one, the other, or both?
This depends which risk concerns you more; there's no single right answer. If your worry is being unable to work for a stretch due to any illness or injury, income protection replaces the income you'd lose.
If your worry is a large one-off cost, like paying down part of the mortgage after a serious diagnosis, a critical illness lump sum fits that. Some buyers choose both; others rely on life insurance, savings or sick pay, or decide neither fits right now.
Buildings insurance is usually a lender condition from exchange, but income protection and critical illness cover are generally not required by lenders — they're something to consider, not a condition. A regulated adviser can assess your circumstances.
See also Do You Actually Need Life Insurance or Mortgage Protection When You Buy a House? and How Much Life Insurance Do You Need When You Get a Mortgage? (UK Guide).
Mistakes that lead to mismatched cover
- Assuming critical illness cover pays for any illness that stops you working — it only covers conditions named in the policy, meeting its definition.
- Not checking exact condition definitions and severity levels before buying.
- Choosing cover on price alone, without checking what's excluded.
- Setting up cover and never reviewing it after a pay rise, new mortgage, or change in circumstances.
For the related step of insuring the property itself, see Home Insurance When You Move House: What You Actually Need (UK Guide).
The bottom line
Income protection and critical illness cover solve different problems: one replaces ongoing income, the other pays a lump sum against a defined list of conditions.
2025 figures show both are regularly claimed on, but acceptance rates and definitions vary by insurer, so details matter more than the headline. Decide based on which risk worries you most, read the definitions carefully, and a regulated adviser can help assess what fits.
This guide is general information, not financial advice.
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