What Is an Endowment Mortgage? How They Work, the Risks, and What to Do If Yours Was Mis-Sold
Published 12th of August 2013·Updated 19 April 2026
Reviewed by: Reviewed for accuracy April 2026
An endowment mortgage is an interest-only mortgage combined with a life insurance savings plan (called an endowment policy). Instead of paying off the loan gradually, you pay interest to the lender each month and pay separately into the endowment policy. When the policy matures, the payout is intended to clear the full mortgage balance. Endowment mortgages were widely sold in the 1980s and 1990s, but they are rarely offered today.
Short Summary
An endowment mortgage is an interest-only mortgage where you pay only interest to the lender each month. A separate endowment policy is supposed to grow sufficiently over the mortgage term to repay the capital you borrowed.
The risk is that if the endowment policy performs poorly, it may not generate enough to clear the mortgage. This shortfall problem affected hundreds of thousands of borrowers in the late 1990s and 2000s.
Many endowment mortgages were mis-sold: borrowers were not adequately warned that the investment could underperform. If this happened to you, you may still be able to claim compensation through the Financial Ombudsman Service.
New endowment mortgages are no longer commonly offered in the UK. If you hold one, it is worth reviewing whether switching to a repayment mortgage or taking other action to address a potential shortfall makes sense.
How does an endowment mortgage work?
Each month you make two separate payments. The first goes to your mortgage lender and covers only the interest on the capital you borrowed. This means your loan balance does not reduce during the mortgage term.
The second payment goes to a life insurance company, which invests it in a fund (either a with-profits fund or a unit-linked fund). Over the mortgage term, typically 20 to 25 years, the policy is designed to grow enough to repay the original mortgage balance when it matures.
Because the endowment policy includes a life insurance element, it also pays out a lump sum if you die before the mortgage term ends, which would clear the mortgage debt and provide some additional sum for your family.
What are the two types of endowment policy?
| Type | How it works | Key risk |
|---|---|---|
| With-profits | Invests in a mix of assets and adds annual bonuses; a terminal bonus is added at maturity | Bonuses are not guaranteed; a poor final bonus can produce a significant shortfall |
| Unit-linked | Tracks the value of the underlying investments directly, without smoothing | Performance is directly exposed to market fluctuations; value can fall as well as rise |
With-profits policies aimed to smooth out investment returns through bonuses, but the terminal bonus paid at maturity was discretionary and sometimes minimal. Unit-linked policies were more transparent but more volatile.
What went wrong with endowment mortgages?
In the 1980s, when endowment mortgages were popular, interest rates on investment returns were high and projections suggested policies would comfortably outperform what was needed to repay the mortgage. By the late 1990s, falling investment returns meant that millions of policies were on track to produce a shortfall.
The Financial Services Authority (now the Financial Conduct Authority) required insurers to write to policyholders if their endowment was projected to fall short. Millions of letters were sent. Many borrowers had not been adequately warned of the investment risk when they took out the policy, meaning the product had been mis-sold.
The Financial Ombudsman Service (FOS) received hundreds of thousands of complaints and awarded compensation in many cases. If you received a red or amber warning letter about your endowment and have not already made a complaint, you may still be eligible to do so.
What should I do if my endowment is projected to fall short?
If your endowment is on track to produce a shortfall, you have several options:
Make extra mortgage overpayments. If your mortgage allows overpayments, directing extra money at the capital reduces the outstanding balance and closes the shortfall gap.
Increase your endowment premiums. Some policies allow you to top up contributions. Contact your insurer to check whether this is an option and what the projected effect would be.
Take out a separate repayment vehicle. You could open a stocks and shares ISA or increase pension contributions to build an additional fund to cover any shortfall at maturity.
Switch to a repayment mortgage. If the shortfall risk is significant, refinancing to a repayment mortgage turns your monthly payments into genuine debt reduction. A mortgage adviser can assess whether this is viable based on your current balance, remaining term, and income.
Surrender the policy early. Surrendering an endowment policy before maturity usually results in a poor return, particularly in the early years when charges have been heavily front-loaded. Before surrendering, check the surrender value against the current market value if your policy can be traded on the second-hand endowment market.
What are the advantages of an endowment mortgage?
The main advantages were the built-in life cover (which was often cheaper as part of the package than buying separately) and the potential for investment growth to exceed the mortgage balance, leaving the borrower with a surplus. For borrowers who took out policies in the early 1980s and whose investments performed well, this sometimes happened.
The interest-only structure also resulted in lower monthly mortgage payments compared to a standard repayment mortgage, which made properties more affordable in the short term.
What are the disadvantages of an endowment mortgage?
The capital you borrow is not reduced during the mortgage term. You owe the full original amount until the day the policy matures.
Investment performance is not guaranteed. Shortfalls have left many borrowers with a significant gap between their endowment payout and their outstanding mortgage balance.
Set-up costs and ongoing charges on endowment policies are often higher than simpler life insurance products. Flexibility is limited: taking a payment holiday or reducing premiums can materially affect the final payout.
Surrendering the policy early typically results in a poor return due to the way initial charges are structured.
What if I think my endowment was mis-sold?
If you were not clearly told that the endowment might not repay your mortgage in full, or if the risks of investment-linked returns were not explained, you may have grounds for a mis-selling complaint.
Contact your insurer or financial adviser first with a written complaint. If they do not resolve it satisfactorily within eight weeks, escalate to the Financial Ombudsman Service at ombudsman.org.uk. The FOS investigates complaints at no cost to you. Time limits apply: generally you have six years from when the loss became apparent, or three years from when you knew (or should have known) you had grounds to complain.
The Financial Conduct Authority provides further guidance on its website at fca.org.uk.
FAQ
Are endowment mortgages still available in the UK?
Endowment mortgages are very rarely offered by mainstream lenders today. The combination of investment uncertainty, regulatory scrutiny, and the large number of mis-selling claims in the 2000s effectively ended the market. Interest-only mortgages are still available, but lenders now require a clearly evidenced repayment vehicle, such as a pension, ISA, or the planned sale of assets.
What happens if my endowment does not pay off my mortgage?
You remain liable for the outstanding balance. If your endowment matures and leaves a shortfall, you must find another way to repay the remaining capital. This could mean extending the mortgage term, selling the property, using savings, or taking out a new loan. Taking early action as soon as a shortfall is projected gives you more time and more options.
Can I sell my endowment policy before it matures?
Yes. A second-hand endowment market exists in the UK. Trading specialists such as the Association of Policy Market Makers (APMM) can value and sell your policy for more than the surrender value in some cases. This only works if your policy has a meaningful investment value; check the current surrender value and compare it with any offer from the second-hand market.
Is an endowment mortgage suitable for first-time buyers today?
No. Endowment mortgages are not a realistic option for most first-time buyers in the current market. A standard repayment mortgage is almost always the more appropriate choice, as each payment reduces the amount you owe and the debt is fully cleared by the end of the term. Speak to an independent mortgage broker for advice tailored to your situation.
Can I make a mis-selling complaint if I no longer hold the policy?
Yes, as long as you are within the relevant time limits. You do not need to still hold the policy to make a complaint. Gather any documentation you have from when the policy was sold, including any illustrations or projections shown to you at the time. The Financial Ombudsman Service can advise you on the process.