Income protection vs critical illness cover (UK 2026)
They sound similar but protect against different things. Income protection replaces a slice of your earnings month by month while you cannot work; critical illness cover pays a single tax-free lump sum if you are diagnosed with one of a defined list of serious conditions. This guide compares how each is triggered, what it pays, how long it lasts, what it costs and whether holding both makes sense.
The short version
- Income protection pays a regular monthly income if illness or injury stops you working — whatever the cause — until you recover, retire or the policy ends.
- Critical illness cover pays a one-off lump sum if you are diagnosed with one of a specific list of named conditions, whether or not you are able to keep working.
- Different jobs: income protection insures your ongoing earnings; critical illness gives capital to clear a mortgage, fund adaptations or absorb a shock.
- You can hold both, and many households do — they cover different gaps rather than duplicate each other.
Income protection vs critical illness at a glance
| Income protection | Critical illness cover | |
|---|---|---|
| What triggers a payout | Any illness or injury that stops you working — cause is not restricted | Diagnosis of one of a specific list of named conditions (e.g. certain cancers, heart attack, stroke) |
| Payout shape | A regular monthly income, typically replacing around 50–65% of gross earnings, paid tax-free | A single tax-free lump sum equal to the cover amount you chose |
| How long it pays | Until you recover, retire or the term ends — short-term cover caps each claim at one or two years; full-term can run to retirement | Once only — the policy pays the lump sum and that benefit then ends |
| Typical cost | Priced as a percentage of the monthly benefit; for most healthy applicants a low single-digit percentage of the income insured | Priced on the lump sum, age, health and term; often costs more than life-only cover for the same person |
| Can you have both? | Yes — they cover different risks (ongoing income vs a capital shock) and are frequently held together | |
Indicative comparison for orientation only — not a quote. Condition lists, definitions and pricing are set by each insurer’s policy terms and underwriting.
Replacing income vs receiving a lump sum
The clearest way to tell them apart is to ask what problem each one solves. Income protection answers “how do I keep paying the bills if I cannot work?” It pays a monthly benefit while you are unable to work for medical reasons — a back injury, a long recovery, a mental-health absence — without needing the cause to appear on any list. Payments usually begin after a chosen deferred period and continue until you can work again, the term ends or you reach retirement. The income protection hub explains deferred periods and short-term versus full-term cover in more detail.
Critical illness cover answers a different question: “what if I am hit by a serious diagnosis?” It pays a single lump sum when a doctor confirms one of the named conditions in the policy, regardless of whether you can still work. That capital can clear a mortgage, pay for treatment or adaptations, or simply buy time. Because it is a lump sum tied to diagnosis rather than to time off work, it behaves more like the protection element you may already recognise from life insurance — indeed critical illness is often added alongside a life policy.
Which fits which gap?
Neither is universally “better” — they protect different gaps. If your main worry is keeping food on the table through any kind of long absence, income protection is the cover built for that, because it pays out for incapacity from any cause and keeps paying month after month. If your main worry is a sudden serious diagnosis and the one-off costs it brings — clearing the mortgage, funding care, or stepping back from work on your own terms — a critical illness lump sum is designed for that shock.
Many UK households end up with a blend: a life policy to clear debts on death, critical illness for a diagnosis shock, and income protection to keep the household running through any long-term incapacity. How much of each is right depends on your debts, savings, sick pay and dependants — which is general context, not a recommendation. Compare your own circumstances and the policy terms before deciding.
Why some people hold both covers
Because income protection and critical illness cover are triggered differently and pay differently, they rarely duplicate each other. A critical illness lump sum can clear a mortgage the moment a serious condition is diagnosed; income protection then keeps replacing earnings for as long as you remain unable to work, including for conditions that fall outside the critical illness list. Held together they reduce the chance of a gap. The cost of combining them depends on the benefit amounts, your age and health, and the options chosen — see the income protection hub for the levers that move the price, and the life insurance section for how a lump-sum policy sits alongside.
Income protection vs critical illness FAQs
Information only — not financial advice. My Insurance Expert is not an FCA-authorised intermediary and does not arrange or sell policies. Comparisons and figures are indicative for orientation, not quotes, and condition lists and definitions vary by insurer. Last updated: 2026-06-13