RIO Mortgage Inheritance: What Family and Executors Need to Know

A retirement interest-only (RIO) mortgage is not handed down to your family as a debt. But it does shape RIO mortgage inheritance: when the last borrower dies, the loan is repaid from the estate, usually from the sale of the home. Because the debt does not usually grow, the amount owed is known in advance.

Our guide to retirement interest only mortgages explains how the product works. This page is for borrowers planning ahead, and for family members and executors dealing with a RIO mortgage after a death. We do not provide financial advice.

How RIO mortgage inheritance works

With a RIO mortgage you pay the interest each month, so the amount you owe usually stays the same. What your family inherits from the home is broadly its sale price, minus the loan, minus selling costs and any other debts.

For illustration only, with made-up figures: if a home sells for £300,000 and the RIO loan is £100,000, about £200,000 is left before selling costs, other debts and any tax.

This is different from a lifetime mortgage, the most common type of equity release, where interest is usually added to the loan and the amount owed grows. Our lifetime mortgage versus RIO mortgage comparison sets out how each can affect what is passed on.

Is the debt passed to family?

Not personally. When someone dies, their debts are paid from their estate before anything is passed on. gov.uk explains that executors must pay any debts owed by the person who died before sharing out the estate. Family members are not usually responsible for a loan in someone else's sole name. The exception is if they were also a borrower on the mortgage.

What executors need to do

Tell the lender

The executor (the person named in the will to deal with the estate), or the administrator if there is no will, usually needs to tell the lender about the death. Executors can ask the lender how long the estate has to repay, and whether interest continues to be charged in the meantime, and ask for the answers in writing.

Apply for probate before selling

gov.uk guidance says not to put a property on the market until the executor has a grant of probate, the legal document that confirms their authority to deal with the estate. Probate can take time, and keeping the lender updated on progress can help.

Repay the loan

Most estates repay the loan from the sale of the home. Some families repay it from other money in the estate, or from their own funds, so they can keep the property. Anyone taking out a new mortgage to do this would face the usual lender checks.

If the sale does not cover the loan

RIO mortgages generally do not include the no negative equity guarantee that Equity Release Council members offer on lifetime mortgages. If the home sells for less than the loan and costs, the estate may need to make up the difference from other assets.

Joint borrowers and the surviving partner

If the mortgage is in joint names, it usually continues after the first death. The surviving borrower stays in the home and keeps paying the interest. The estate of the first person to die does not normally need to repay the loan. RIO mortgage inheritance questions usually arise only after the second death, or when the survivor moves permanently into long-term care.

Inheritance tax and a RIO mortgage

A RIO mortgage can reduce the value of an estate for inheritance tax. gov.uk guidance says debts owed by the person who died, such as a mortgage, are deducted when valuing the estate. When working out the residence nil-rate band, the home's value is also taken after deducting any mortgage.

Inheritance tax is charged at 40% on the part of an estate above the nil-rate band of £325,000 (2026/27). An extra residence nil-rate band of up to £175,000 (2026/27) can apply when a home is left to direct descendants, and this is tapered away for larger estates.

Some people use a RIO mortgage to help family during their lifetime. A gift of borrowed money is treated like any other gift. It can still count for inheritance tax if the giver dies within 7 years. Our guide to gifting money to family explains the rules.

Our guide to inheritance planning for your home and family covers the wider picture.

Talking to your family now

A short conversation now can save your family a lot of work later. It can help to:

• tell your executors the lender's name and where the mortgage paperwork is kept;
• explain that the loan is repaid when the last borrower dies or moves into long-term care;
• keep a copy of the mortgage offer with your will;
• ask whether anyone would want to keep the home, and whether they could realistically repay the loan.

If leaving as much as possible to family matters most, some people look at options that avoid borrowing, such as moving to a smaller or less expensive property. Each option has its own costs and trade-offs.

Not sure where to start?

A solicitor can help with wills, probate and estate questions. An FCA-regulated mortgage adviser can explain how a RIO mortgage would affect what you leave, compared with other options. For inheritance tax, a tax adviser or solicitor can look at your whole estate. We do not provide financial advice.