What Is Life Insurance and How Does It Work?
Life insurance is a simple way to protect the people who depend on you. You pay a monthly amount, and if you die during the policy, your family gets a tax free lump sum, subject to eligibility and policy terms.
Get my quoteWhat Life Insurance Is
In one line: life insurance pays a cash sum to the people you choose if you die while the policy is running. You pay a set amount each month, called the premium, and in return the insurer promises that payout.
It exists to do one thing well: stop the people who rely on you from struggling with money if you are gone. They can use the payout however they need, such as clearing the mortgage, covering everyday bills or paying for childcare. It is not a legal requirement, but it is one of the simplest ways to protect a family.
The Main Types of Life Insurance
Most life insurance falls into a few simple types. The big split is between term cover, which lasts a set number of years, and whole of life cover, which has no end date and always pays out.
Within term cover, the main choice is whether the payout stays the same or falls over time. This chart shows the difference.
Here is how the main types compare.
| Type of cover | How it works | Often used for |
|---|---|---|
| Level term | Pays a fixed lump sum if you die within the term | Family living costs, an interest only mortgage |
| Decreasing term | Payout falls over time, and is often the cheapest | Covering a repayment mortgage |
| Increasing term | Payout rises over time, usually with inflation | Keeping the value of cover up as prices rise |
| Family income benefit | Pays a regular income for the rest of the term, not a lump sum | Replacing lost income month to month |
| Whole of life | No end date, always pays out, but costs more | Funeral costs, a legacy, inheritance tax planning |
| Over 50s | Guaranteed acceptance for ages 50 to 80, no medical questions, with a modest fixed payout and usually a waiting period in the first year or two | Funeral costs or a small gift, if standard cover is hard to get |
| Joint policy | Covers two people but usually pays out once, then ends | Couples with shared finances, often cheaper than two single policies |
Surely summary of the main UK life insurance products.4
How It Works
Whichever type you pick, the steps are the same.
- You choose the cover amount and term. The cover amount is the lump sum that would be paid. The term is how many years the cover lasts.
- You answer health and lifestyle questions. This is called underwriting, where the insurer works out the risk and your price. Answering fully and honestly is the most important step, because not doing so can void a claim.
- You pay a monthly premium. This keeps the policy active for as long as you need it.
- If you die during the term, your family claims. They send a death certificate and a short form, the insurer checks the claim, and pays a tax free lump sum, usually within days to a few weeks once the documents are in.1
Most term policies also include terminal illness cover, which pays out early if you are diagnosed with an illness that cannot be cured and you are expected to live less than 12 months.
Key Terms In Plain English
A handful of words come up again and again. Here is what they mean.
- Premium
- The amount you pay, usually each month, to keep the policy running.
- Cover amount, or sum assured
- The lump sum the policy would pay out.
- Term
- How many years the cover lasts. Term cover only pays out if you die within it.
- Beneficiary
- The person or people set to receive the payout.
- Underwriting
- How the insurer weighs up your health and lifestyle to decide your price.
- Written in trust
- A simple, usually free arrangement that sends the payout straight to your family. It keeps the money outside your estate, so it avoids probate and usually inheritance tax.
- Terminal illness benefit
- An early payout if you are diagnosed with an incurable illness and expected to live less than 12 months.
- Guaranteed or reviewable premiums
- Guaranteed premiums stay the same for the whole policy. Reviewable premiums can change, usually rising, after the insurer reviews them.
Who It Is For
Life insurance suits anyone whose death would leave others short of money. The clearest cases are people with a mortgage, a partner or children, anyone who supports a family member, and the self employed, who have no workplace cover to fall back on. It is also worth a look if you have debts that would pass to others, or you want to leave money for a funeral, which now costs over £4,400 on average.3
It may matter less if you have no dependants and enough savings to cover your debts and final costs. And if your main worry is being unable to work rather than dying, income protection or critical illness cover may fit better. For impartial help you can use MoneyHelper, the government backed service.
What It Costs
Life insurance is often cheaper than people expect. The average level term policy costs around £25 a month, and a healthy younger person can pay much less.3 Your price depends mostly on your age, whether you smoke, your health, and the amount and length of cover.
Age is the biggest factor, because premiums rise the longer you wait. This chart shows how the typical cost climbs by the decade.
Surely analysis of published UK life insurance pricing, 2025 to 2026. Figures are illustrative and not quotes.3
“The biggest mistake I see is people buying the wrong type. Paying for level cover when a cheaper decreasing policy would have matched the mortgage, for example. Get your head around the few main types first, then the rest of the choice gets simple.”
Common Myths
A few beliefs put people off cover they could use. Here is what the data actually says.
“Life insurance is too expensive.”
RealityThe average level term policy is around £25 a month, and many healthy younger people pay less than the price of a coffee a week.3
“Insurers find ways not to pay out.”
RealityIn 2024, around 97% of life insurance claims were paid. The main reason a claim fails is not answering the health questions honestly.1
“I am young and healthy, so I do not need it.”
RealityCover is at its cheapest when you are young and healthy, and it matters as soon as someone depends on you, such as a partner or a child.
“Smokers or people with health conditions cannot get cover.”
RealityYou usually can. It may cost more, and some insurers are more flexible than others, which is why it pays to compare.
Why Use Surely
Life insurance is simple once it is explained clearly. Surely does that.
We set out the types in plain English, with no jargon and no buried small print, and we compile and cross check real UK claims and pricing data so you see the full picture. Then we help you compare cover from selected UK insurers to find a policy that fits.
The reassurance is in the numbers. In 2024, UK insurers paid a record £8 billion in protection claims, and around 97% of life insurance claims were paid.1 Surely helps you compare and get quotes online, and does not give advice itself.
Frequently Asked Questions
Is life insurance worth it?
If anyone relies on you financially, it usually is. It is low cost for a large payout, and in 2024 around 97% of claims were paid. If no one depends on you and you have no debts that would pass on, you may not need it.
What is the difference between life insurance and life assurance?
The words are often used loosely. Insurance usually means term cover for a set period, which may or may not pay out. Assurance usually means whole of life cover, which pays out whenever you die.
Do I need it if I am single with no children?
Often not. It matters most when others depend on you. It can still be worth it if you have debts someone would inherit, or you want to leave money to cover your own funeral.
What is the difference between term and whole of life?
Term cover lasts a set number of years and is cheaper, but only pays out if you die within the term. Whole of life has no end date and always pays out, but costs more.
Is the payout taxed?
It is normally paid tax free. It can count towards inheritance tax, charged at 40% above £325,000, unless the policy is written in trust. Tax treatment depends on your circumstances and can change.
Can I have more than one policy?
Yes. Many people layer cover, for example one policy to clear the mortgage and another to support the family, so each part does a clear job.
This guide deals with death and serious illness. For impartial money guidance you can use MoneyHelper, the government backed service.
Getting Started
Start by working out who would need money if you were gone, and how much. Match the cover amount to your mortgage and commitments, and the term to the years your family would need support. Pick the type that fits, level term for steady cover, decreasing term for a repayment mortgage, whole of life for lifelong cover. Then compare a few insurers, and answer the health questions honestly.
Cover, price and eligibility depend on your personal circumstances, age, health, smoker status and insurer terms. Life insurance pays out only during the policy term and is subject to the policy terms and claim approval. Surely helps you compare insurance and does not provide regulated financial advice.
How We Researched This Guide
We write our guides from named, public UK sources and cross check the figures rather than rely on a single site. Where we say “Surely analysis”, it means we have compiled and compared published data, not produced the raw figures ourselves.
The data on this page draws on:
- Association of British Insurers and Group Risk Development, protection claims data 2024 (published July 2025), for claims paid and the average payout.
- GOV.UK, for the inheritance tax threshold and rate.
- Published UK life insurance pricing, 2025 to 2026, and the SunLife Cost of Dying report for funeral costs.
- MoneyHelper, impartial guidance on life insurance.
Cost examples assume a healthy non smoker buying level term cover, with the age, cover amount and term stated. They are illustrative averages, not quotes, and your own price will depend on your age, health and the cover you choose.
Surely compares cover from a selected panel of UK insurers and protection advisers, not the whole of the market. When you ask for a quote you may receive one online or be contacted by a qualified protection adviser from our panel. Surely may receive a commission, which does not affect the price you pay.
Written and reviewed by Paul Gillooly, Founder of Surely. Last reviewed June 2026.
Sources
- Association of British Insurers and Group Risk Development, “Record £8bn paid out in vital protection claims during 2024”, published July 2025. Around 97% of life claims paid (term life 96.5%, whole of life 99.9%), average payout £79,703.
- GOV.UK, Inheritance Tax: nil rate band of £325,000 and a 40% rate above it. Tax treatment depends on your circumstances and may change.
- Surely analysis of published UK life insurance pricing, 2025 to 2026, and the SunLife Cost of Dying report for funeral costs. Pricing figures are illustrative and not quotes.
- MoneyHelper, impartial guidance on life insurance and product types.
