Income protection vs critical illness cover: what's the difference?

These two get muddled up all the time — and I get why, because they both sound like "insurance for if something goes wrong". But they do genuinely different jobs. Let me walk you through it in plain English, so you can have a proper conversation with an adviser about what fits your life.

The one-line difference

Here's the whole thing in a nutshell:

• Income protection pays you a regular monthly income if you can't work because of illness or injury — a bit like a wage arriving while you're off sick.
• Critical illness cover pays you a one-off lump sum if you're diagnosed with one of a defined list of serious conditions — think certain cancers, a heart attack or a stroke, as spelled out in the policy.

So one is a tap that keeps dripping while you're unable to work. The other is a bucket of money that lands once, when a named thing happens. Same goal — protecting you and the people who rely on your income — but two very different shapes.

How income protection actually works

Income protection is built around the idea of replacing part of your earnings when illness or injury stops you working.

• It typically pays a percentage of your usual income — as a rule somewhere in the region of half to two-thirds of your gross pay, so there's still a reason to return to work when you're able.
• The payments are usually monthly, and they keep coming until you recover, go back to work, reach the end of the agreed payout period, or hit retirement age — depending on the policy you choose.
• You pick a waiting period (sometimes called a deferred period) — the gap between falling ill and the money starting. It can range from a few weeks to several months. Generally, the longer you're willing to wait, the lower the cost, because you're covering more of the early gap yourself.

The key thing: income protection doesn't care which illness stopped you — it cares that you can't work. That makes it broad. It also usually covers you for repeated or long-running conditions, not just one dramatic diagnosis.

How critical illness cover actually works

Critical illness cover works on a list. The policy names specific serious conditions, and it pays out a tax-free lump sum if you're diagnosed with one of them and meet the policy's definition.

• You get one payment, and it's yours to use however you like — clearing a chunk of the mortgage, adapting your home, paying for care or treatment, or simply buying time.
• It pays out on diagnosis of a covered condition, whether or not you're able to keep working. Some people are diagnosed with something serious and still work; the lump sum still lands.
• The definitions matter enormously. Two policies might both say they cover "cancer" or "heart attack" but define them differently, and some milder or early-stage conditions may pay a smaller amount or nothing at all. This is exactly the sort of small print an adviser reads for a living.

So critical illness is narrower than income protection — it only responds to the conditions on its list — but when it does respond, it hands over a single, substantial sum rather than a monthly trickle.

Which suits which situation?

I'm not going to tell you one wins — honestly, they solve different problems, and the "right" answer depends entirely on your life, your job, your savings and who depends on you. But here's how people generally weigh them up:

• Income protection tends to appeal to people whose biggest worry is "how do I pay the bills every month if I can't work for a long time?" — especially the self-employed, or anyone with little or no employer sick pay.
• Critical illness cover tends to appeal to people who want a big single cushion if the worst happens — for example, to knock a large lump off the mortgage or fund treatment — and who may already have savings or sick pay to handle shorter gaps.

Trade-offs to sit with honestly: income protection can pay out many times over a long illness, but only while you genuinely can't work. Critical illness pays even if you keep working, but only for listed conditions — and once it's paid, that's it. Neither is "better". They're different tools, and plenty of people find one fits their situation far more naturally than the other.

Can you have both — and what affects the cost?

Yes, plenty of people hold both, because they cover different gaps: the monthly income while you're off, and a lump sum if a named serious illness strikes. Others pick just one, or blend cover to suit a budget. There's no single correct combination.

What tends to move the price on either type:

• Your age and general health when you apply.
• Whether you smoke.
• Your job and how risky it is.
• How much cover you want, and — for income protection — the waiting period and how long payments would last.

A few things worth checking on any policy, whichever you're looking at: exactly what's covered and excluded, whether the premium can change over time, and how you'd actually make a claim. I can explain what these terms mean; a regulated adviser can compare the real policies and their small print for you across the whole market.

This guide is general information, not advice. This guide is general information, not advice.