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.

Lisa Redman of Legal & General"Whether you're a first-time buyer or have experience on the property ladder, understanding the protection available for such a significant investment is an important consideration," said Lisa Redman (pictured right), senior propositions manager at Legal & General Retail Protection.

"Would your loved ones be able to pay the mortgage if you were to pass away? Mortgage life insurance is designed to protect your family should tragedy happen," said Redman.

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 mortgage shouldn't be the only factor in considering life insurance, it should also be about whether people depend on you financially," Redman said. Renters and others without a mortgage may still have dependants who rely on their income for rent, bills, or childcare, making cover relevant beyond homeownership.

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.

"A family home is far more than just an asset; it is invaluable and regardless of the cover you choose, a small monthly sum could mean your family are able to remain where they are despite your absence," Redman said.

"Equally, it is important to remember life insurance is not a savings or investment product and holds no cash value if a valid claim is not made."

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