What is decreasing life insurance and do you need it?

Decreasing term life insurance key figures at a glance

What is decreasing term life insurance?

Decreasing term life insurance is a type of life insurance where the lump sum falls over the length of the policy.

It is built to protect a repayment mortgage. That is why you will also see it listed as life insurance decreasing term, mortgage life insurance or decreasing term assurance. The names describe the same product.

The “term” is how long the policy runs. Choose a term that matches your mortgage: a 25-year mortgage needs a 25-year policy. If you die during the term, the insurer pays the sum assured to your family or the people you name.

If you outlive the term, the policy ends and nothing is paid.

How premiums work

With a guaranteed policy, your premium stays the same every month for the whole term, even though the payout falls. A reviewable policy can raise the premium, so check which type you are quoted.

Decreasing cover is not the same as mortgage payment protection insurance (MPPI). Payment protection covers your monthly payments if you cannot work because of illness, an accident or redundancy. A decreasing mortgage life insurance policy pays one lump sum when you die.

How the reducing payout works

On a repayment mortgage, each monthly payment covers that month’s interest and cuts the loan debt a little. The balance falls slowly at first and faster later. A decreasing policy follows the same curve, with small cuts in the early years and bigger ones later.

For example, say you borrow £500,000 over 25 years on a repayment basis. We have used an illustrative fixed rate of 5% to work out the balances below. It is not a quote or a current rate.

If you died in year 10, a policy that tracks this pattern would pay about £370,000. That clears the loan and leaves your family in the home. It does not leave extra money for anything else.

Your policy schedule shows how often the sum assured falls: either once a year, on the policy anniversary, or monthly. Insurers usually build the schedule around an assumed interest rate. If your mortgage rate stays above that assumption for years, your debt can fall more slowly than your cover. Check the policy documents to see which rate was used.

When your circumstances change

The schedule assumes you make standard repayments over the original term.

Four common changes break that assumption.

1. If you overpay your mortgage, your debt falls faster than your cover. You end up with more cover than you need and no shortfall. You may want to review the policy if the extra cost matters to you.
2. If you switch to interest-only, your balance stops falling, but your cover keeps shrinking. That leaves a gap. You would need extra cover.
3. If you extend your mortgage term, your debt falls more slowly than before, so the policy can run short.
4. If you move or remortgage, the policy carries on unchanged. A bigger loan may need extra cover. A smaller loan may leave you over-covered.

Your insurer may let you convert to level cover or change the reduction rate. That may mean new health questions, and the price can go up.

Nothing officially links the policy to your mortgage account, so the checking falls to you. Each time a fixed rate ends or you make a large overpayment, ask your insurer for the current sum assured and compare it with your mortgage balance.

Decreasing or level term life insurance?

The main alternative is level term insurance. It pays the same lump sum whenever you die during the term. Insure for £500,000 and your family receives £500,000 in year one or year twenty.

Which one should you choose?

Neither is right for everyone. Decreasing cover works well when you have a repayment mortgage and want to keep the monthly cost down. Level cover works better if you have an interest-only mortgage, other debts, or you want your family to receive money for school costs, childcare and everyday bills.

If children depend on your income, you may want both. A decreasing policy clears the mortgage, and a smaller level policy covers living costs. You can read more about holding more than one life insurance policy.

One combination never works: decreasing cover on an interest-only mortgage. The loan stays the same size while the cover shrinks, so the gap starts on day one.

Do you need decreasing term life insurance?

Life insurance is not a legal requirement for a mortgage, according to MoneyHelper. Your lender may offer it, but you can buy it elsewhere. The real question is what would happen to your household if you died while the mortgage was still in place.

The FCA’s Financial Lives survey found that 28% of UK adults held a life insurance policy in 2024. Among adults with a mortgage, the share was 57%. On those figures, 43% of adults with a mortgage had no life insurance.

Insurers do pay out. The Association of British Insurers (ABI) reported that UK protection insurers paid £7.84 billion in claims in 2025. For individual protection policies, insurers accepted 97.9% of claims that year. Accurate answers on the application form matter, because claims can be refused if the health or lifestyle details you gave were wrong.

Who it suits

You are likely to benefit if you have a repayment mortgage and a tight budget for premiums.

First-time buyers fit this profile when the mortgage is their biggest debt. You have stretched your finances to buy and you may have young children, or plan to. Your main aim is that they keep the family home.

Single parents carry the whole mortgage on one income. Decreasing cover can protect the home without a big monthly cost.

Couples with one main earner need the mortgage cleared if that earner dies, so the surviving partner can stay in the property.

When it may not suit you

• You have an interest-only mortgage. The balance never falls, and level cover is the better match.
• You have other debts. Credit cards and personal loans do not shrink on a set schedule like a repayment mortgage.
• You are older, or your mortgage term is short. The price gap between decreasing and level cover can be small, so level cover may be worth the extra.
• You expect your income and costs to climb. Level cover keeps pace with a growing family better.

What affects the cost of decreasing term life insurance?

Insurers price each applicant individually, so two people can pay different amounts for the same policy.

• Age and health. Younger, healthier applicants pay less. Health conditions can add to the price and can limit which insurers will cover you.
• Smoking. Smokers pay more than non-smokers. If you have stopped, insurers set a smoke-free period before they treat you as a non-smoker, and the length varies by insurer.
• Job and hobbies. Office workers get standard rates. Jobs such as a firefighter, oil rig worker or professional diver can cost more, as can hobbies like mountaineering or motor racing.
• Amount and length. A larger sum assured costs more, and so does a longer term.
• Single or joint. A joint policy has its own price. See the next section.

Quotes are free and you are not committed by asking. Compare a few before you apply.

Can you get joint decreasing term life insurance?

Yes. A joint policy covers two people, usually a couple, under one contract.

It normally pays out once, on the first death, and then the policy ends. The surviving partner would have to buy new cover, which may cost more because they are older and their health may have changed.

Two single policies will cost more in total, but each pays out on its own, so the second person keeps their cover after the first claim. Ask for both prices when you compare quotes.

Can you add serious illness cover?

Many insurers let you add serious illness cover to a decreasing policy. It pays out if you are diagnosed with a condition on the insurer’s list while you are still alive, such as certain cancers, a heart attack or a stroke. The price is higher, and the list of conditions varies, so read it closely.

Check whether your policy includes terminal illness benefit. It pays out early if you are diagnosed with an illness that is expected to end your life, usually within 12 months, and definitions vary by insurer.

Should you write the policy in trust?

A payout made to your estate can count towards Inheritance Tax. GOV.UK sets the standard rate at 40% on the part of an estate above the £325,000 threshold at the time of writing in October 2026. Extra allowances can apply, such as when a home passes to children or grandchildren.

Putting a policy in trust can keep the payout outside your estate, and so outside probate and Inheritance Tax. It also lets you decide who receives the money and when. A solicitor or financial adviser can advise on the best options for you.

How do you cancel decreasing term life insurance?

You can cancel at any time, but how much it matters depends on when.

• Within 30 days of the start. FCA rules give you 30 days to cancel a protection policy without penalty and without giving a reason. The 30 days run from the day you are told the policy is in place, or the day you receive the policy terms if that is later.
• After 30 days. You can stop paying whenever you like and the cover ends. A term policy has no cash value, so you get nothing back.
• If you repay your mortgage early. You can cancel the policy, or keep it going so your family still receives a payout if you die before the term ends.
• At the end of the term. The policy simply stops. If your mortgage runs on past that date, you will have no cover for the remaining debt.

Before you cancel, check whether you can replace the policy at the same price. New health questions and a higher age can both raise the premium.

Common myths about decreasing life insurance

Myth 1: It guarantees to clear your mortgage

The sum assured follows a set schedule that is built to track a repayment mortgage. It uses an assumed interest rate, not your actual loan. Overpayments, a longer term or rate changes can leave you with too much or too little cover.

Myth 2: Cover from work is enough

Death-in-service benefit from an employer pays a multiple of your salary, and the multiple varies by employer. It may not clear your mortgage, and you lose it when you leave the job or become self-employed.

Myth 3: It is always the cheapest option

For the same starting sum and term, decreasing cover costs less than level cover, because the payout falls over time. For older applicants or short terms, the gap can be small.

Myth 4: You need perfect health

Health conditions can affect the price and which insurers will offer cover. You can still apply with a health condition, and specialist underwriters can help with complex cases.

Myth 5: It only pays out for certain causes of death

A life policy covers death from any cause apart from the exclusions listed in your policy. These vary by insurer, so read them before you buy.

How a financial adviser can help

Respect Mortgages is not authorised by the FCA and cannot give advice on insurance. A protection adviser can.

An independent adviser can compare policies from across the market, including products you cannot buy direct. They know how insurers treat health conditions, unusual jobs and complex cases. They also look at your whole position. Sometimes the best answer is a level policy, or a mix of both types.

Advice is worth having if you have a health condition, a high-risk job, a complicated mortgage or dependants who rely on your income.

Next steps

Decreasing term life insurance suits homeowners with a repayment mortgage who want to protect the home at a low monthly cost. It is the wrong choice for an interest-only mortgage and may fall short if you have other debts.

A new policy costs more the older you are, and health problems become more likely over time. Having cover in place is better than waiting for the perfect policy. If you are unsure which type to choose, find a protection adviser who can compare the options for your circumstances.