Six weeks into a slipped disc, Sarah from Leeds was still taking client calls from her sofa, propped up on cushions between doses of painkillers. Her employer had been generous at first — full salary for the opening month — but by week seven that dropped to Statutory Sick Pay, a flat weekly rate reviewed each April that comes nowhere near covering an average mortgage. She didn't have income protection insurance. Most people in the UK don't, even though it's the one policy specifically built for exactly this situation: an illness or injury that stops you earning, with no fixed end date in sight.
What Income Protection Insurance Actually Pays Out
A standalone income protection policy pays a regular monthly benefit — usually 50% to 70% of your gross salary — for as long as you're medically unable to work, up to the end of the policy term or your agreed retirement age, whichever comes first. Payments are tax-free if you took the policy out yourself and pay the premiums personally, which is the arrangement most employees end up with outside a workplace scheme. The insurer doesn't hand over a lump sum and walk away. It keeps paying, month after month, reviewing your medical evidence periodically, for as long as the incapacity continues. Some policies top up gradually if you return to work part-time or in a reduced capacity, rather than cutting the benefit off the moment you're back at a desk for even a few hours a week. Others build in an escalating benefit that rises with inflation each year you're claiming, which matters more than it sounds once a claim runs past its second or third anniversary. And crucially, none of this depends on a diagnosis matching a fixed list — the insurer's own occupational health assessors decide claims based on your actual capacity to do your job, reassessed periodically rather than settled once at the point of diagnosis.
This is where income protection earns its keep against almost every other type of protection insurance on the market. Life insurance only pays out once, and only when you're no longer around to spend it. Critical illness cover pays a single lump sum tied to a specific list of diagnoses. Income protection is different in kind, not just in size — it's built around the ongoing gap between what you were earning and what you can now bring in, and it keeps closing that gap for as long as the gap exists.
Income Protection vs Critical Illness Cover: Two Different Problems
People conflate these two products constantly, and insurers don't always go out of their way to clear up the confusion. Critical illness cover pays a one-off lump sum — typically used to clear a mortgage or fund treatment — on diagnosis of one of the conditions named on the policy's list, commonly cancer, heart attack, stroke, and a handful of others depending on the insurer. It pays whether or not the diagnosis actually stops you working, and it pays once. Buy a new policy afterwards, if you can even get cover at standard rates with that diagnosis on your medical history, and you're starting from scratch.
Income protection doesn't work from a list at all. A herniated disc, chronic fatigue, a serious car accident, clinical depression that's kept you off work for four months — none of these would typically trigger a critical illness payout, and all of them can trigger an income protection claim, because the test is simply whether you can do your job, not whether your diagnosis matches a name on a schedule. For most working adults, that's the more useful protection: the Association of British Insurers has long pointed out that musculoskeletal problems and mental health conditions, not the critical illnesses people fear most, are the leading causes of long-term sickness absence in the UK. Cancer survival rates have also improved enough that a critical illness payout increasingly needs to fund years of reduced earning capacity during and after treatment, not just the immediate cost of care — which is exactly the gap income protection is built to cover, and a lump sum, however large, struggles to stretch across. The two products aren't really competing for the same job, whatever the comparison tables suggest. A serious diagnosis can trigger both a critical illness lump sum and, separately, an income protection claim if it also stops you working, and holding both isn't redundant — it's belt and braces for genuinely different financial shocks. Choose income protection first if you can only afford one policy: it covers a far wider and more realistic range of what actually keeps people off work.
Own Occupation vs Any Occupation: The Definition That Decides Your Claim
Every income protection policy defines "unable to work" differently, and this single clause matters more than the premium, the insurer's brand, or almost anything else on the policy schedule.
"Own occupation" cover pays out if you can't do your specific job — the one you were doing when you took out the policy — even if you could technically do a different, lower-paid one. This matters enormously for specialised roles: a surgeon who develops a hand tremor, a musician who loses fine motor control, a pilot who fails a medical. "Any occupation" or "suited occupation" cover is cheaper precisely because it's harder to claim on: the insurer only pays if you can't do any job reasonably matched to your training and experience, which for many professionals is a much higher bar to clear. Group schemes run through an employer, and some of the very cheapest guaranteed-premium personal policies, often default to the "any occupation" test or even the stricter "activities of daily living" test, which only pays if you can't perform basic tasks like washing or dressing yourself.
The Deferred Period Sets Your Premium — and Your Cash-Flow Risk
The deferred period is the gap between falling ill and the policy starting to pay, and you choose it when you buy the policy. Standard options run 4, 8, 13, 26, or 52 weeks, and the logic is straightforward: the longer you're willing to wait before payments start, the lower your monthly premium, because the insurer is taking on less risk of paying out for short-term absences. Match the deferred period to your employer's sick pay policy rather than guessing. If your contract guarantees three months of full pay when you're off sick, there's no point paying for a 4-week deferred period — you'd be covering a gap that doesn't exist, and a 13-week deferred period on the same policy can cut the premium by a meaningful margin.
What Income Protection Actually Costs
Expect somewhere in the region of £15 to £60 a month for a typical employee in their thirties or forties buying standalone cover with a 50–60% benefit and a 13-week deferred period — the exact figure depends heavily on age, occupation, health history, and whether you smoke. Manual and higher-risk occupations change the maths considerably: a scaffolder, an HGV driver, or a roofer will usually see quotes two to three times higher than an office-based professional of the same age, because the underlying claims risk is genuinely different. Guaranteed-premium policies cost more from day one but stay level for the whole term; reviewable premiums start lower and can rise significantly as you age or as the insurer's overall claims experience changes, sometimes by more than people expect when the first renewal letter arrives.
How It Sits Alongside Statutory Sick Pay and State Benefits
Statutory Sick Pay is the safety net that catches almost every employee by default, and it's worth understanding precisely because it's so thin. It's a flat weekly amount, reviewed every April, paid for up to 28 weeks — after that, nothing from your employer unless your contract says otherwise. Universal Credit and new-style Employment and Support Allowance exist underneath that, but both are means-tested or capped in ways that rarely come close to replacing a full salary, and Universal Credit in particular takes household savings and a partner's income into account before paying anything at all.
- Employer sick pay, contractual and wildly inconsistent between employers — some firms offer six months on full pay, others revert straight to the statutory minimum
- Statutory Sick Pay, the legal floor beneath everyone
- Universal Credit or new-style ESA, both means-tested and slow to arrange during a health crisis
- Whatever savings you can draw on in the meantime, which for most households run out faster than people expect
Income protection benefit payments from a personal policy generally aren't counted as earnings for tax purposes, though they can still interact with means-tested benefit calculations depending on your circumstances — worth checking with an adviser or MoneyHelper before assuming the two simply stack.
When Income Protection Isn't Worth Buying
It isn't always the right call, and anyone selling it to you as universally essential is skipping the caveats. If you're self-employed with six months of expenses saved and you're five years from a comfortable retirement, self-insuring might genuinely be cheaper than three more decades of premiums. If your employer already runs a solid group income protection scheme — many do, particularly in the public sector and larger corporates — a personal policy on top may just be duplicate cover you're paying for twice. And pre-existing conditions are excluded on almost every policy, sometimes permanently, sometimes with a moratorium that lifts after a symptom-free period, so read the exclusions before assuming a condition you already manage is covered from day one.
Self-employed workers are usually the group with the strongest case for buying it anyway. No employer sick pay exists at all when you work for yourself, which means the gap between full income and Statutory Sick Pay isn't a gap — it's a cliff edge, and it arrives on day one of any serious illness or injury rather than after a few weeks of employer generosity running out.
Get a quote before you assume it's unaffordable, and get the policy definition in writing before you assume it covers what the marketing page implies. That paragraph on "own occupation" versus "activities of daily living" is the one that decides whether a claim actually gets paid — not the number on the quote screen, and not the insurer's name on the letterhead.