Income Protection vs Critical Illness Cover: Which Do You Need?
Updated January 2026 · FCA Registered (989177)
Income protection pays a monthly income if you cannot work — for any illness or injury, for as long as you need it. Critical illness cover pays a one-off lump sum on diagnosis of specific serious conditions. If you are worried about years off work, income protection is usually the stronger policy. If you want to clear your mortgage after a serious diagnosis, critical illness is designed for that.
Income Protection vs Critical Illness: Full Comparison
| Feature | Income Protection | Critical Illness Cover |
|---|---|---|
| Payout type | Monthly income | One-off lump sum |
| Triggers payout | Unable to work due to any illness or injury | Diagnosed with a listed condition |
| Conditions covered | Effectively any — if it stops you working | Specific list (typically 40–100+ conditions) |
| How long it pays | Until you recover, retire, or policy ends | One payment only |
| Typical benefit | 50–70% of pre-tax income | Fixed lump sum (e.g. £100k–£500k) |
| Mental health cover | Yes — a leading claim cause | Rarely covered |
| Musculoskeletal cover | Yes — back pain, arthritis etc. | Not typically covered |
| Best for | Replacing income during long-term illness | Clearing mortgage or large debts on diagnosis |
What Income Protection Actually Covers
Income protection pays out for almost any physical or mental health condition that prevents you from doing your job. The most common claims in the UK are for mental health conditions (depression, anxiety), musculoskeletal problems (back pain, arthritis), and cancer.
You choose a deferred period — the waiting time before payments begin — typically 4, 8, 13, or 26 weeks. A longer deferred period means lower premiums. The policy then pays monthly until you can return to work, until the policy end date, or until retirement.
For a 35-year-old earning £35,000, income protection paying £1,750/month (60% of salary) after a 13-week deferred period might cost around £25–£45/month depending on occupation and health.
What Critical Illness Cover Actually Covers
Critical illness cover pays out if you are diagnosed with a specific condition on the insurer's list. Most policies cover between 40 and 100+ conditions. The main ones almost always included are: cancer (meeting certain severity criteria), heart attack, stroke, multiple sclerosis, Parkinson's disease, and major organ failure.
The lump sum is typically used to clear a mortgage, adapt a home, or cover treatment costs. You receive the full payout once, and the policy ends. It does not matter whether you return to work — the payout is triggered by diagnosis alone.
Critical illness cover does not cover mental health conditions, most musculoskeletal conditions, or the majority of illnesses that cause long-term absence from work. This is its key limitation compared to income protection.
Who Should Choose Which?
| Your situation | Recommended cover |
|---|---|
| Self-employed with no sick pay | Income protection — essential |
| Employed with 6 months full sick pay | Income protection with 26-week deferred period |
| Large mortgage, want to clear it if seriously ill | Critical illness cover |
| Family relies on your income | Income protection + life insurance |
| Strong family history of cancer or heart disease | Critical illness (check underwriting terms carefully) |
| Budget is limited — can only afford one | Income protection (covers the widest range of risks) |
| Maximum protection with adequate budget | Both income protection and critical illness |
Still not sure which cover you need?
The right answer depends on your employment status, sick pay entitlement, mortgage size, and budget. An FCA-regulated adviser can review your full situation and recommend the best combination of policies from the whole market.
Common Questions
Does critical illness cover pay out for cancer?
Yes, but not all cancers. Most critical illness policies cover cancer that has spread beyond its original location or requires active treatment. Early-stage or non-invasive cancers (sometimes called in-situ cancers) are often excluded or pay only a partial amount. Always check the specific cancer definitions in a policy before buying.
Will income protection pay out for stress or depression?
Yes. Mental health conditions including depression, anxiety, and stress are among the most common income protection claims. Provided your doctor certifies you are unable to work and your policy does not exclude mental health (most standard policies do not exclude it), the policy will pay your monthly benefit throughout your absence.
What happens if I recover and return to work with income protection?
Payments stop when you return to work. Your policy remains in force and you can claim again if you become unable to work in the future. There is typically a rehabilitation benefit — some policies pay a proportion of the benefit for a period after returning to work part-time during recovery.
Frequently Asked Questions
What is the difference between income protection and critical illness cover?
Income protection pays a monthly income — typically 50–70% of your salary — if you cannot work due to any illness or injury. Critical illness cover pays a single tax-free lump sum if you are diagnosed with a specific condition listed in your policy, such as cancer, heart attack, or stroke. The core difference is monthly ongoing payments versus a one-off payout.
Which is better: income protection or critical illness cover?
Neither is universally better — they protect against different risks. Income protection is generally considered more comprehensive because it covers any illness that stops you working, for as long as needed. Critical illness only pays for listed conditions. However, critical illness lump sums are useful for clearing large debts like a mortgage. Many advisers recommend both if budget allows.
Can I have both income protection and critical illness cover?
Yes, and many people do. The two policies complement each other well. Critical illness can pay off your mortgage if you're seriously ill, while income protection covers your ongoing monthly bills and living costs during recovery. Having both gives comprehensive financial protection against serious illness or injury.
Does income protection cover critical illness?
Income protection will pay out during a critical illness if that illness stops you from working — but only for the duration you are unable to work. It is not the same as critical illness cover, which pays a lump sum on diagnosis regardless of whether you return to work. The two products serve different purposes.
How much does income protection cost compared to critical illness?
Critical illness cover is often more expensive than income protection for the same level of cover because it pays a large lump sum and covers a wide range of serious conditions. Income protection premiums depend heavily on your occupation, deferred period, and benefit amount. For most people, income protection costs less per month than critical illness for comparable cover.
Related Guides
Get Expert Advice on Protection Cover
Our FCA-regulated advisers compare income protection and critical illness policies from the whole market — free of charge.