Term vs whole life is only the starting point. Insurers sell eight or more distinct products, and picking the wrong one means paying for cover you don’t need — or missing the cover you do. This guide maps every common type, shows worked costs, and matches each to a life stage.
The Full Comparison Matrix
| Type | Duration | Payout | Typical Cost (per month) | Who It’s For |
|---|---|---|---|---|
| Level term | Fixed (10-30 yrs) | Fixed lump sum on death | £10-25 | Families with dependents |
| Decreasing term | Fixed | Lump sum that falls over time | £5-15 | Mortgage holders |
| Increasing term | Fixed | Lump sum that rises with inflation | £15-35 | Long-term protection buyers |
| Whole of life | Lifetime | Guaranteed on death | £40-150+ | Estate planning, funeral costs |
| Endowment | Fixed | Lump sum on survival or death | £30-80 | Investment-linked savings |
| Over-50s plan | Lifetime | Small guaranteed payout | £10-40 | Funeral costs, no health questions |
| Joint life | Fixed or lifetime | Single payout on first death | ~60% of two single policies | Couples |
| Term + critical illness rider | Fixed | Payout on death or specified illness | £15-45 | Anyone who wants illness cover added |
The Three Term Flavours
Level term keeps the payout flat for the whole term. It’s the benchmark product: cover £250,000 for 25 years at roughly £15-25/month for a healthy 30-year-old non-smoker. The downside is inflation erodes the real value of a long-term payout.
Decreasing term starts high and falls — often in line with a repayment mortgage balance. Because the payout shrinks, it’s the cheapest cover there is: typically £5-12/month for the same initial sum. It is wrong for income replacement, but ideal for matching a mortgage.
Increasing term raises the payout each year, typically by 3% or in line with RPI. A £250,000 policy bought at 30 could pay £500,000+ by age 60. You pay 30-50% more than level term, but the cover keeps up with inflation rather than being quietly eroded.
Whole of Life and Endowment
Whole of life guarantees a payout whenever you die, so premiums are 3-10x term — £100,000 of cover at 30 costs £40-100/month. It makes sense only for a permanent need: inheritance tax planning, a lifetime liability, or locking in cover you can’t later be underwritten for. Many build cash value, but returns typically trail investing the difference.
Endowment policies combine life cover with a savings element — a lump sum at the end of the term or on earlier death. They were popular for paying off interest-only mortgages in the 1990s and burned many investors when returns fell short. Today they’re niche; for saving, separate term cover plus an ISA usually wins on cost and flexibility.
Over-50s Plans
Over-50s plans accept everyone regardless of health — no medical questions. The catch is the payout is small and often frozen. A £40/month plan typically guarantees only £2,000-5,000, and dying in the first 1-2 years may see premiums refunded instead. Their purpose is covering funeral costs (a UK funeral averages over £4,000) for people who can’t get medically underwritten cover.
Joint Life
Joint life pays out once on the first death and then ends — so the surviving partner has no cover left. It’s around 40% cheaper than two separate single policies and suits couples whose main need is clearing the mortgage together. If both partners earn, two single policies usually make more sense: they pay twice, and each stays covered after the other dies.
Critical Illness Riders
Critical illness cover pays a lump sum on diagnosis of a listed condition (typically 30-50: cancer, heart attack, stroke, major surgery). It’s most often a rider on a term policy — adding it typically lifts the premium from £15 to £25-45/month. It covers the financial hit of being unable to work while alive, which pure life insurance never does. Riders vary wildly in which conditions are covered and how strictly they’re defined, so read the illness list, not the brochure.
Worked Cost Examples
For a healthy 30-year-old non-smoker, £200,000 of cover:
| Product | Monthly Cost | 25-Year Total |
|---|---|---|
| Decreasing term (25 yrs) | £9 | £2,700 |
| Level term (25 yrs) | £17 | £5,100 |
| Increasing term (3%/yr, 25 yrs) | £24 | £7,200 |
| Term + critical illness rider | £32 | £9,600 |
| Whole of life (lifetime) | £75 | £22,500+ |
| Over-50s plan | £40 | £12,000 for ~£4,000 payout |
Which Type for Which Life Stage
| Life Stage | Recommended | Why |
|---|---|---|
| 20s, new mortgage | Decreasing term | Cheapest mortgage cover |
| 30s, young family | Level term | Fixed, affordable protection |
| 30s-40s, two earners | Two single level term policies | Both stay covered |
| 40s, self-employed | Term + critical illness rider | Income protection while alive |
| 50s, no dependents | Over-50s plan | Funeral costs without medical questions |
| 50s+, estate planning | Whole of life | Paying inheritance tax |
Bottom Line
Choose the cheapest product that matches the specific risk you’re covering: decreasing term for a mortgage, level term for income replacement, a critical illness rider if being alive but ill is the danger, and whole of life only for a permanent need. Over-50s plans are a last resort for those who can’t pass underwriting. For 90% of people, a level or decreasing term policy with the difference invested elsewhere beats the alternatives.
Choosing the right product
The discipline is simple but worth restating: identify the specific risk you’re guarding against, then buy the cheapest product that matches it. A mortgage is a decreasing liability, so decreasing term — typically £5-12/month — tracks it naturally. Income replacement is a level, long-term need, so level term at £10-25/month is the benchmark. If the danger you’re most worried about is being alive but unable to earn — recovering from cancer, a heart attack, or major surgery — then a critical illness rider, which lifts a £15 term premium to around £25-45/month, is the add-on that actually covers that scenario. Only buy whole of life (£40-150+) where the need is genuinely permanent, and treat over-50s plans as a last resort for those who can’t pass underwriting.
Common mistakes to avoid
The biggest mistakes in life insurance are buying the wrong type for the job, and buying far more than you need. Taking out whole of life when a plain level term would protect your family is paying 3-10x for cover you didn’t ask for. Underestimating joint life’s limitation is another: a joint policy pays once and then ends, leaving the surviving partner with nothing — which is fine if the goal is clearing the mortgage together, but a poor fit when both partners earn. Skipping critical illness cover on the assumption life insurance covers an illness is a genuine gap, since pure life cover pays nothing while you’re alive. And over-50s plans bought as a “savings plan” typically disappoint, because the payout is small, frozen, and you can easily pay in more than you receive.
Frequently asked questions
Is decreasing term right for income protection? No. Decreasing term’s payout falls over time, which matches a shrinking mortgage but is wrong for income replacement, where the family’s need stays level or grows. For protecting dependents’ income, use level term instead.
How does inflation affect a fixed payout? A level-term payout set today will be worth less in real terms by the time it pays out. Increasing term raises the sum each year — typically around 3% or in line with RPI — so a £250,000 policy bought at 30 could pay £500,000+ by 60, though you pay roughly 30-50% more for it.
Do I need life insurance if I have no dependents? Not usually for income replacement. Without a spouse, children, or aging parents relying on your income, the main reasons to hold cover are covering debts such as a mortgage, or a permanent need like funeral or inheritance planning. Otherwise, term cover may be unnecessary.
Can I change my term policy later? Term policies are generally fixed for the term — you can’t simply extend them without new, more expensive underwriting. This is why some people choose increasing term or add indexation, and why it’s worth estimating your need a little generously at the outset.
Building a sensible policy
Whether you pick level term, decreasing term, or add a critical illness rider, the same good habits apply. Buy while you’re young and healthy, because underwriting at an older age with a condition is both pricier and harder. Get the right sum from the start — the typical 10-12x annual income rule gives a sensible starting point for income replacement. Read the illness definitions on any critical illness rider rather than relying on the marketing, because coverage varies. And review the policy periodically: adjust the term or add indexation as your mortgage, family size, and earnings evolve. Done this way, life insurance quietly does its job for a modest monthly cost.