Life insurance and mortgages: what buyers need to know

Legal & General highlights the role of life insurance in protecting mortgage borrowers and their families

Life insurance and mortgages: what buyers need to know

With the average UK property now costing £271,000, the mortgage behind it represents one of the largest financial obligations most households will ever carry. Legal & General has published guidance examining how life insurance can protect that debt — and the family home attached to it — if the borrower dies before the loan is repaid.

Life insurance is not a legal requirement for mortgage borrowers, though some lenders may treat it as a precondition of lending. The core purpose of mortgage life insurance is straightforward: if the policyholder dies while the mortgage remains outstanding, the payout can be used to clear the remaining debt and allow dependants to remain in the property.

Two policy types are most commonly associated with mortgage protection. Level term life insurance pays a fixed lump sum on death, which can be applied to mortgage repayments as well as broader living costs. Decreasing life insurance is structured specifically for repayment mortgages, with the sum insured reducing roughly in line with the outstanding loan balance — and typically carrying a lower premium as a result.

Premium costs vary depending on policy type, age at inception, and whether critical illness cover is included. 

Average monthly cost of life insurance
£22.90
 
£45.34
 
£24.38
 
£26.33
 
 
Decreasing
Life Insurance
Decreasing
Life Insurance
(with Critical Illness Cover)
Life Insurance Life Insurance
(with Critical Illness Cover)
39* 34* 40* 35*
* Average age when taking out each policy Legal & General data as at 8 July 2026

Policy terms are typically matched to the length of the mortgage, though shorter arrangements are available. The sum insured for repayment mortgage protection would ordinarily reflect the outstanding loan balance at the point of taking out cover.

The need for cover is not limited to sole borrowers. Where a property is purchased jointly, mortgage repayments are often calculated against two incomes. The death of one borrower could leave the surviving partner unable to maintain repayments alone; a valid life insurance claim could clear the outstanding balance and remove that burden.

Landlords carrying mortgage debt on investment properties are also within scope, though it is worth noting that life insurance differs from landlord insurance, which covers the structure and contents of a property rather than the underlying loan.

A life insurance policy also operates independently of the mortgage agreement itself. Repaying the mortgage early does not cancel or alter the policy, and some borrowers choose to retain cover after settlement to provide ongoing financial support for dependants.

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