How long you need life insurance depends on how long the people you are covering would rely on the money, so the term is best chosen by finding the end date of each need rather than by picking a round number of years. A mortgage, children, a partner's retirement and other debts each have a date of their own, and the term is where you decide which of them the policy should reach.

This page is a way of working those dates out, not a suggested length. To see a few lengths priced side by side, use the short form on this page. An FCA-authorised broker phones you back, and the call costs nothing.

What does the term of a life insurance policy decide?

Aviva's calculator page (WC05624 07/2026) defines the policy term as the number of years you want the cover to last, and says the length "will depend on any outstanding mortgage or funeral arrangements or if you'd like to leave something for your loved ones." MoneyHelper's guide, in a copy archived in August 2025, gave "five, ten or 25 years" as examples of a term, not as a norm. In its 19 June 2026 guide to the types of cover, Legal & General says the payout comes only for a death or a qualifying terminal illness "during the chosen term". What each insurer allows at the short and long ends is in how long term life insurance lasts, and the oldest ages a term may run to are in life insurance cover till what age; neither sets the length for you.

So the useful question is what the policy is for. Clearing a mortgage, paying for a funeral and leaving money behind are different jobs with different end dates, and the length is the buyer's own choice.

How do you match the term to a mortgage?

A mortgage has the clearest date: the year it is due to be repaid. What a new policy is set against is the years still left to run, not the length of the original loan. Two points can change the answer.

The type of mortgage. Aviva's knowledge centre (last updated 12 June 2026) presents decreasing cover as built for a repayment mortgage or another long-term loan and level cover as an option for an interest-only mortgage, and says the lump sum from either could help clear the loan, "but it depends on the type of mortgage you have, and if there are any other costs you’d like to help cover." How the two shapes compare is on decreasing against level term, and the amount is on how much life cover you need.

Changes after you start. Legal & General's guide warns that if the mortgage changes, a policy bought for it can fall short of the loan unless the cover is adjusted to the new arrangements. A remortgage, move or longer loan can therefore shift the end date after the policy begins; increasing cover on a term policy sets out what to ask.

Choosing between a shorter and a longer decreasing term works the same way: count the years the loan has left, then decide whether you want the cover to follow it, stop short of it or run beyond it. A decreasing policy often ends with the loan, and the end of a decreasing policy explains that date; whether the mortgage needs cover at all is on life insurance for a mortgage.

How do you match the term to your children?

Children give a softer end date than a mortgage, because independence is not one age. GOV.UK's Child Benefit rules are a small illustration: you get it if you are responsible for bringing up a child who is "under 16" or "under 20 if they stay in approved education or training". That is a benefit rule, not an insurance rule, but it shows that even an official cut-off moves with a child's circumstances.

Aviva's calculator makes the same point by asking whether the policy needs to protect a partner or children, and whether cover should run to retirement age or until the children reach adulthood. For a household with children, questions to work through are:

  • How old is the youngest child, and what do you expect to be paying for until they can support themselves: childcare, school, university, a first home?
  • Might a child need support for longer than most, so that any date you pick is only a starting point?
  • Could more children arrive, which would push the date later? Life insurance for a family goes through that side of it.

The youngest child usually needs support longest, so their date tends to be the one the others fall inside. If the cover should pay a monthly income across those years rather than one sum, that is a question about the shape of the cover, answered in what family income benefit is.

How do retirement, a partner's pension and other debts affect the length?

Retirement can be read two ways. One is your own: some people want the cover to finish when the pay it protects would have stopped anyway. The other is your partner's. Legal & General's calculator page (undated, © 2026) asks you to consider whether losing your income would affect a partner's planned retirement age as well as the children's education. If a partner's later years rely on your pension contributions or your earnings, the date that matters may be theirs, not yours.

Retirement dates are less fixed than they look. GOV.UK's State Pension age page, which sets out a benefit rule rather than an insurance one, says "Your State Pension age is the earliest age you can start receiving your State Pension. It may be different to the age you can get a workplace or personal pension." It adds: "The State Pension age is regularly reviewed, so the results of this tool may change in the future." So a term set to a retirement age is set against a date that can move, and a workplace scheme may use another one.

Other points to put on the list, each with its own date:

  • Other debts. Loans, car finance and credit cards each end on their own date, which may not be the mortgage's.
  • Cover through work. MoneyHelper's guide (in the copy archived in August 2025) warned that if you stop working for an employer "you’ll no longer be covered under their policy", so a term that assumes employer cover until retirement rests on staying in that job. Life insurance alongside death in service covers that overlap.
  • A partner's own cover. One joint policy ends at the first claim, whereas two single policies can have two different end dates; joint against individual cover compares them.
  • A need that does not end. Some needs have no end date, such as a dependant who will always need support. A term policy cannot be matched to a date that never arrives, and whole of life cover is the separate product built for that.

Income lost through illness rather than death is a different protection, with its own length question in income protection benefit periods.

What does a longer term cost, and what does a gap mean?

Length is one of the things insurers price, so it is worth knowing which way it pushes. Royal London's consumer page puts it in general terms: a longer need, like a bigger one, means a higher expected monthly premium. No figure can be given here, because the effect depends on your age, health and the amount; a quote at more than one length shows it for you. What life insurance costs sets out what else moves a price, and the cost and quotes guides collect the rest.

The cost of extra years has to be weighed against two other things. The first is whether you can keep paying. Legal & General says "You also need to be comfortable that you can afford to pay for your policy while it’s in force." A longer term is paid for over more years, and a policy that is dropped part-way gives no cover for the years that were meant to be protected; what happens if you cancel explains what stopping early involves.

The second is the gap at the end. If the term finishes before the need does, the years left over are uncovered unless you arrange something new (the options as an end date nears are in how long term life insurance lasts), and Aviva notes that "your premiums are likely to be higher the older you are" when you apply. That is general direction, not a forecast for you; whether premiums rise with age goes into it. Neither a longer nor a shorter term is the cautious choice by default: one costs more years of premiums, the other may leave years uncovered.

Two end dates are easiest to judge when both are priced for the same sum. Mention both dates in the form on this page when you send it, so the two prices come back together.

Frequently asked questions

What does life insurance term length mean?

It is the number of years the policy stays in force, chosen when you buy it. Cover pays out only for a death during those years, or, in Legal & General's wording above, a qualifying terminal illness.

What is a typical or average term?

There is no standard length to aim for, and even an average would not tell you how long your own cover needs to run. The end dates of your own needs are the better test.

Should I keep life insurance after retirement?

It depends on whether anyone still relies on money that your death would remove, such as a partner's pension, a debt or an inheritance you want to leave. If nobody would, the need the cover was bought for may already have ended.

Which decreasing term length suits my needs?

If the cover is for a repayment mortgage, the starting point is the years left on the loan. Count them as above, remember that a remortgage can change them, and ask for more than one length to be priced.

Once you have your dates, list them in the form on this page; sending it costs nothing. An FCA-authorised broker will call, go through the lengths you have in mind and quote them, and the choice stays with you.

Sources

  • Royal London, Life insurance (consumer page, undated, © Royal London 2026), read 19 October 2026. royallondon.com
  • Legal & General, How are life insurance premiums calculated? (15 May 2026), read 19 October 2026. legalandgeneral.com
  • Aviva, Different types of life insurance for your family (last updated 12 June 2026; WC05488 06/2026), read 19 October 2026. aviva.co.uk
  • GOV.UK, Check your State Pension age (no date shown on the page), read 19 October 2026. gov.uk
  • Legal & General, Types of life insurance (19 June 2026), read 19 October 2026. legalandgeneral.com
  • GOV.UK, Child Benefit (no date shown on the page), read 19 October 2026. gov.uk
  • Aviva, Life insurance calculator (WC05624 07/2026), read 19 October 2026. aviva.co.uk
  • Legal & General, Life insurance calculator (undated, © Legal & General Group plc 2026), read 19 October 2026. legalandgeneral.com
  • MoneyHelper, What is life insurance? (as captured by the Wayback Machine on 3 August 2025, the newest copy we could open; the live page may since have changed), read 19 October 2026. web.archive.org