Term Life Insurance Costs: How Policy Length Affects Price
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How does the length of a term life insurance policy affect its cost? The years you choose are one of several factors affecting the monthly premium. A policy covering you for 30 years is a different financial commitment from one covering you for just 10 years, even with the same starting sum insured.
But there is no single UK price for a 10-, 20- or 30-year term. Age, medical history, nicotine use, occupation, cover amount and insurer underwriting all matter. This guide looks specifically at choosing a sensible term and comparing the costs, rather than giving misleading price tables.
Does a longer policy term cost more?
On otherwise comparable applications, a longer period of protection can result in a higher monthly premium than a shorter one because the insurer may need to provide cover for more years. However, exact differences vary with policy design and insurer pricing.
It is important to compare like for like: the same insurer, applicant details, starting cover amount, policy type and premium structure. A 20-year illustration for £200,000 of level term cover cannot be compared directly with a 30-year illustration for £100,000 of decreasing term insurance.
Should you choose 10, 20, 25 or 30 years?
| Possible term | A reason someone might explore it | What to check |
|---|---|---|
| 10 years | A remaining financial commitment expected to end within a decade. | Will your dependants still need support when the term expires? |
| 20 years | Protection while children are growing up or a mortgage is being repaid. | Does the chosen end date actually match those needs? |
| 25 years | Longer-term family support or a mortgage with that amount of time left. | Can you afford premiums throughout the policy’s term? |
| 30 years | Protection for an extended period where financial dependants may remain. | Would a different cover structure meet the need at a suitable cost? |
These are planning examples, not recommendations based simply on age. Our guide to choosing the length of life insurance explains how to work backwards from the risks being protected.
Worked example: £200,000 of cover for a mortgage
Imagine you owe £200,000 on a repayment mortgage with 22 years remaining. You might initially discuss a policy with a 22-year term, while checking what amount and structure of protection are appropriate.
If the goal is protecting a repayment balance, decreasing term cover could be an option. Its benefit reduces according to the insurer’s schedule, which may not track your exact loan balance, particularly if interest rates change or you make overpayments. If you also want money to support a partner or children, you may need different cover or a separate benefit.
See our mortgage life insurance guide for the main options.
How does age affect term insurance premiums?
New life insurance generally becomes more expensive as you get older, all else being equal. This is one reason to consider protection when the need first arises rather than assuming you can buy the same cover at the same price in later years.
However, being younger does not by itself mean you need a policy. If no one depends on you financially and you have no relevant commitments, you may have different protection priorities.
Is level term or decreasing term insurance cheaper?
Decreasing term cover can sometimes have a lower premium than comparable level term cover because its insured amount falls during the policy. That can make sense for some repayment mortgages, but not necessarily for an interest-only loan or a continuing family income need.
A low price should not outweigh suitability. Compare the expected payout during the term and who would receive it, as well as the monthly cost. Our level versus decreasing term comparison explores the distinctions.
Do premiums stay fixed throughout the policy?
Some policies offer guaranteed premiums that remain at the agreed rate, assuming you keep the cover unchanged and pay as required. Other types can involve reviewable or changing premiums. An illustration should make this clear.
Also check any options to increase benefits over time, including indexation, because those may affect premiums. Read the actual policy documents rather than relying on an advert suggesting every life insurance premium is fixed for life.
Can you extend a term policy later?
Not always. Some plans include specific options for extending or increasing cover under defined circumstances, but these differ across contracts. A new application normally means your current age and health are assessed, and eligibility cannot be guaranteed.
Do not cancel existing cover before any appropriate replacement is confirmed in force. You might otherwise lose terms that are no longer available to you.
What about life insurance after the policy term ends?
A standard term policy normally ends without a payout or cash value if the person insured is alive at the end of the contract. If your family still needs protection at that point, arranging new insurance may be more expensive or unavailable. That is why selecting the end date thoughtfully matters.
Whole-of-life policies have different objectives and obligations. See our guide to whole-of-life cover if the need is genuinely lifelong.
How do you compare real monthly premiums?
Ask for quotations using consistent details: the same insured amount, age, health and nicotine answers, type of policy and additional benefits. You can then compare how different terms affect the cost while keeping the other assumptions as similar as possible.
For a broader look at why prices vary, read the cost of UK life insurance and why two life insurance quotes can differ.
Request a term life insurance quote
Our online life insurance comparison lets you explore initial prices for your chosen amount and term. Final premiums and acceptance depend on underwriting, and adviser support is available for the next step.
Reviewed October 2026. General information, not a personal recommendation or premium quote. Discount Life Cover operates through FCA-authorised My Key Finance Ltd (FRN 628996). See MoneyHelper’s independent life insurance guide for further information.
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