Interest Only Mortgage End of Term: What Happens Next?

If your interest only mortgage is approaching the end of its term, it is essential to understand your options and act early. At maturity, the full capital balance becomes due, and your lender will expect repayment. For many borrowers — particularly those who took out interest only mortgages before lending criteria were tightened in 2014 — this can be a challenging moment. This guide explains what happens when your interest only mortgage ends and outlines every option available to you.

For a full overview of how interest only mortgages work, read our complete guide to interest only mortgages.

What Happens When Your Interest Only Mortgage Reaches Maturity?

When your interest only mortgage term expires, the full outstanding capital balance becomes due for repayment. If you borrowed £250,000 twenty-five years ago on interest only, you still owe the full £250,000 (assuming no overpayments have been made). Your lender will contact you — usually well in advance of the maturity date — to discuss how you intend to repay.

Most lenders will begin writing to you several years before the term ends, asking you to confirm your repayment strategy. If you cannot demonstrate a clear plan, the lender may take further steps, which could ultimately include possession proceedings. However, lenders generally prefer to work with borrowers to find a solution and will only consider repossession as a last resort.

What Are Your Options When Your Interest Only Mortgage Ends?

You can repay the capital in full, sell the property, remortgage, extend the term, take a retirement interest only mortgage, or make a partial repayment. The best route depends on your circumstances, the value of your property, and your financial position:

1. Can I Repay the Capital in Full?

If your repayment vehicle has performed as planned, you can use those funds to repay the mortgage in full. This could come from matured ISAs, investment portfolios, pension lump sums, endowment policies, or savings. This is the ideal outcome — you clear the mortgage completely and own the property outright.

2. Can I Sell the Property to Repay the Mortgage?

If you do not have the funds to repay the capital, selling the property is often the most straightforward option. Provided the property is worth more than the outstanding mortgage, the sale proceeds will clear the debt. Any surplus belongs to you and could be used to purchase a smaller property, either outright or with a new mortgage. If you are considering downsizing, this can be a practical route.

3. Can I Remortgage at the End of an Interest Only Term?

You may be able to take out a new mortgage to replace the existing one. This could be on a repayment basis (so the capital will eventually be cleared) or on interest only again if you meet the current criteria. However, remortgaging at the end of an interest only term can be challenging because:

• Many borrowers are older by this point, and lenders have maximum age limits (typically 70 to 75 at the end of the new term)
• Affordability rules may be stricter than when you originally borrowed, particularly if your income has reduced
• New interest only criteria require high income (£75,000+) and low LTV (typically 50% maximum)

A specialist broker can search for lenders with more flexible criteria, including those that specifically cater to older borrowers.

4. Can My Lender Extend My Mortgage Term?

Some lenders will agree to extend the mortgage term, giving you additional time to repay. This is not guaranteed and will depend on the lender's policies, your age, and your financial circumstances. If the extension is on a repayment basis, it allows you to spread the capital repayment over the extended period.

5. What Is a Retirement Interest Only (RIO) Mortgage?

Introduced in 2018, retirement interest only mortgages are specifically designed for older borrowers. Like a standard interest only mortgage, you pay only the monthly interest. However, the capital is repaid when you die, move into long-term care, or sell the property. RIO mortgages have no fixed end date, removing the maturity deadline pressure. Affordability is assessed on your ability to pay the monthly interest, and there is no requirement for a repayment vehicle.

6. Can I Make a Partial Repayment and Remortgage the Rest?

If your repayment vehicle covers some but not all of the capital, you can use those funds to reduce the balance and then remortgage the remainder. This could make remortgaging more feasible by reducing the LTV to a level that more lenders will accept.

What Happens If I Have a Repayment Shortfall?

A repayment shortfall means your savings, investments, or endowment policy will not cover the full capital balance owed. If you are facing a shortfall, the key is to act early — the sooner you address the gap, the more options you have. This was a widespread issue with endowment mortgages in the late 1990s and 2000s, and it remains a concern for many borrowers approaching maturity today.

If you are facing a shortfall, the key is to act early. The sooner you address the gap, the more options you have:

• Increase contributions to your repayment vehicle if time allows
• Make overpayments on the mortgage to reduce the capital (many lenders allow up to 10% per year without penalty)
• Switch part or all of the mortgage to repayment — read our guide to switching from interest only
• Plan to sell and downsize, using the property equity to clear the debt
• Seek independent advice from a mortgage broker or free service like MoneyHelper

When Should I Start Planning for the End of My Interest Only Mortgage?

1. 01

   10+ years before maturity

   Review your repayment vehicle performance. If there is a projected shortfall, increase contributions, switch part to repayment, or start overpaying the capital. You have time to make meaningful changes.

2. 02

   5 years before maturity

   Take a hard look at your numbers. If your repayment vehicle will not cover the full balance, consider switching to repayment, making lump sum payments, or beginning to plan for property sale or downsizing.

3. 03

   2–3 years before maturity

   Contact your lender to discuss your intentions. Explore remortgaging, term extensions, or RIO mortgages. Start the process early — mortgage applications and property sales take time.

4. 04

   6–12 months before maturity

   Finalise your repayment plan. If selling, put the property on the market. If remortgaging, submit applications. If using savings or investments, begin liquidating assets in an orderly way.

5. 05

   At maturity

   Repay the capital using your chosen method. If you are still working on a solution, communicate this to your lender — most will work with you if you are engaging in good faith.

What Are My Rights If I Cannot Repay My Interest Only Mortgage?

Lenders must treat you fairly and explore all reasonable options before considering repossession, which is always a last resort under FCA rules. Here are the key protections:

• Lenders must treat you fairly and explore all reasonable options before considering repossession
• Repossession should be a last resort, used only when all other avenues have been exhausted
• You have the right to seek independent financial advice and to raise a complaint with the Financial Ombudsman Service if you feel you have been treated unfairly
• Lenders should consider forbearance measures, such as temporary arrangements to allow you time to sell or remortgage

Free, impartial guidance is available from MoneyHelper and Citizens Advice.

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