Mortgage Protection Insurance Guide
Life insurance, critical illness cover, income protection and payment protection — what actually covers what?
Written and reviewed by Sophie Harrison · Published 27 August 2026 · Page last reviewed 27 August 2026
Four different products get lumped together as “mortgage protection,” and they price very differently and cover very different risks. None of them are ever a condition of getting a mortgage — this guide is here so you can judge what, if anything, is worth having.
What is mortgage protection insurance?
“Mortgage protection” isn't one product — it's a loose umbrella term for four distinct insurance products, each answering a different question about what happens to your mortgage payments if something goes wrong:
- Life insurance — pays a lump sum if you die within the term. Nothing to do with illness.
- Critical illness cover — pays a lump sum if you're diagnosed with a specified serious condition. Almost always bought bundled with life insurance.
- Income protection — pays a regular income if you can't work due to illness or injury, potentially for years.
- Mortgage payment protection insurance — pays your mortgage payment specifically, for a limited period, if you can't work.
The most useful way to think about them is as two separate decisions, not four independent boxes to tick: a life-and-illness decision (life insurance, optionally combined with critical illness) and an income decision (income protection or mortgage payment protection insurance — pick one, not both). See Which combination is right for you below.
How does life insurance work for a mortgage?
The version most people buy alongside a mortgage is decreasing term life insurance — the payout falls roughly in line with your outstanding mortgage balance over the term, which keeps the premium lower than level cover (a fixed payout throughout). The idea is straightforward: if you die before the mortgage is repaid, the payout clears what's left, so your family isn't left with the debt.
- Cover amount and term are up to you — they don't have to exactly match the mortgage.
- You can write the policy in trust so the payout goes directly to your family rather than through probate, and typically doesn't count towards inheritance tax.
- Joint life policies (common for co-owned mortgages) usually pay out once, on the first death — worth checking whether that leaves the survivor with enough cover.
- No lender in the UK requires you to buy life insurance to get a mortgage, regardless of how it's presented during the application.
What does critical illness cover add?
Critical illness cover pays a tax-free lump sum on diagnosis of a condition from the insurer's specified list — typically cancer, heart attack, stroke, and a defined set of others — regardless of whether the condition proves fatal. It's almost always sold combined with life insurance as a single “life and critical illness” policy, and bundling is often cheaper than buying the two separately.
The critical illness element is the expensive half of a combined policy — expect it to roughly triple to quintuple the premium versus life cover alone for the same sum assured, because a serious diagnosis during a 25-30 year mortgage term is meaningfully more likely than death in the same period. Read the exact condition definitions before buying — insurers vary in how strictly they define each condition, and a diagnosis that doesn't meet the policy's specific wording won't pay out.
What does income protection cover?
Income protection insurance pays a regular, tax-free income — typically 50-60% of your gross earnings — if you're unable to work due to illness or injury. Unlike critical illness cover, it isn't limited to a specified list of conditions: it responds to being unable to do your job (or any job, depending on the policy's definition), for as long as that lasts, potentially all the way to retirement age.
- Deferred period — how long you wait after stopping work before payments start (typically 4-52 weeks). A longer deferred period lowers the premium; check it against any sick pay your employer provides.
- “Own occupation” vs “any occupation” — own-occupation cover pays out if you can't do your specific job, even if you could do a different one; any-occupation cover is stricter and cheaper.
- This is the most comprehensive of the four products, and priced accordingly — it's underwritten in more depth than mortgage payment protection insurance.
What is mortgage payment protection insurance?
Mortgage payment protection insurance — also sold as accident, sickness and unemployment cover — pays your mortgage payment specifically if you can't work, but only for a limited benefit period, typically 12 to 24 months, and only up to the mortgage payment amount. It's quicker and simpler to arrange than income protection, with lighter underwriting, which is exactly why it's often pitched as an add-on at the point of taking out a mortgage.
Its history matters here
This kind of cover was at the centre of one of the UK's largest mis-selling scandals. Through the 1990s and 2000s, these policies were routinely sold alongside loans and mortgages to people who were self-employed, already had a pre-existing condition, or were otherwise excluded by small print that was rarely explained clearly — sometimes without the customer being told cover was optional at all. It was frequently sold on high commission, added automatically, or presented as expected rather than a genuine choice. That mis-selling became known as the Payment Protection Insurance scandal, and the redress bill across the industry ran into the tens of billions of pounds.
None of that means the product is worthless today — a short-term bridge while you arrange something more comprehensive can be a reasonable use of it. But given the history, read the exclusions properly: self-employment status, existing conditions, and how “unemployment” is actually defined are the places these policies most often fail to pay out. If you already have income protection covering the mortgage payment, adding this cover on top is usually money spent on cover you don't need.
Which combination is right for you?
Rather than treating these as four separate boxes to tick, it helps to think of them as two decisions:
1. Life & illness
Life insurance alone, or combined with critical illness cover. Not mutually exclusive with the income decision below — most people with dependants hold cover from both groups, since they respond to different risks (death vs. reduced ability to earn).
2. Income if you can't work
Income protection or mortgage payment protection insurance — genuinely alternatives for the same underlying risk, not an addition to each other. Choose based on how comprehensive you want the cover to be, versus how quickly and cheaply you want it in place.
All four products in this guide require financial advice to buy properly — that's a genuine protection for you, since an adviser is required to check the policy actually fits your circumstances (occupation, health, existing cover) before recommending it, which is exactly the check that historically went missing with mis-sold payment protection cover.
What does it actually cost?
Real premiums depend heavily on age, health, occupation, smoker status, cover amount and term — treat the figures below as a rough sense of scale, not a quote:
- Life insurance — often the cheapest of the four for a healthy applicant in their 30s.
- Life + critical illness combined — roughly 3-5× the life-only premium for the same cover, since the illness element carries most of the cost.
- Income protection — priced on occupation class and deferred period as much as cover amount; a longer deferred period and an office-based occupation both lower it noticeably.
- Mortgage payment protection insurance — usually the cheapest of the income-side options, reflecting its shorter benefit period and lighter underwriting.
Get an actual quote before deciding anything — the ranking above holds broadly true, but the real numbers for your circumstances are the only ones that matter.
