What Happens at the End of an Interest-only Mortgage?

With an interest-only mortgage, you only pay the interest each month, not the capital.

Your monthly payments are lower than with a repayment mortgage. But when the mortgage term ends, you’ll need to pay back the full amount you originally borrowed.

Many homeowners approach the end of their interest-only term without a clear plan for repaying this lump sum. If you’re reading this, you’re not alone: around 60% of our property purchases at Property Rescue involve homeowners with interest-only mortgages nearing expiry.

Knowing your options now can help you avoid serious consequences later, including the risk of losing your home.

What happens when your interest-only mortgage ends?

When your interest-only mortgage reaches the end of its term, your lender will expect you to repay the entire outstanding balance.

If, for example, you borrowed £200,000, you’ll need to pay back £200,000, regardless of how many years you’ve been making interest payments.

Here’s what actually happens:

Many lenders contact borrowers well before maturity, though the FCA does not mandate a specific timeframe such as 6–12 months before term end. Under current FCA rules, lenders must ensure you have a credible repayment strategy and review it at least once during the mortgage term. If your mortgage is nearing maturity, contact your lender proactively rather than waiting for a review letter, because engagement remains your responsibility.

When you receive this letter, don’t ignore it.

If you can’t demonstrate a credible repayment plan or repay the full amount when the term ends, you risk having your home repossessed. Lenders can, and do, pursue possession proceedings when borrowers cannot settle the debt.

Why interest-only mortgages are harder to get now

Back in the 2000s, interest-only mortgages were widely available with minimal scrutiny of repayment plans.

That changed in 2013 when the FCA introduced stricter lending rules. Lenders now must verify that borrowers have a credible repayment strategy before approving interest-only lending.

This is why getting a new interest-only mortgage today (whether a new product or remortgage) requires solid evidence of how you’ll repay the capital. Simply saying “I’ll sell the house” or “my investments should grow” is no longer sufficient.

Common problems homeowners face at the end of interest-only mortgages

From what we’ve seen helping hundreds of homeowners in this exact situation, the most frequent challenges include:

• Not having a solid repayment plan in place: the endowment policy didn’t mature as expected, or it simply wasn’t set up at all
• Savings or investments that haven’t grown enough to cover the loan: market performance was disappointing or life events required dipping into savings
• Being too old to qualify for a traditional new mortgage: most lenders won’t lend beyond age 70-75, though this varies by lender
• Poor credit history limiting remortgage options: missed payments, defaults, or CCJs make refinancing difficult
• House prices that haven’t increased as much as expected: particularly in certain regions or property types
• Health issues or change in circumstances affecting income and ability to secure new lending

The good news? Even if you’re facing one or more of these problems, you still have options.

What are your options when an interest-only mortgage ends?

Fortunately, there are several ways to deal with your interest-only mortgage at the end of its term.

The right choice depends on your age, income, property value, and how much time you have. Here’s what you can do:

1. Pay off the loan in full

The simplest solution is to use savings, investments, pensions, or other assets to pay off the mortgage in one go.

This is often seen as the ideal scenario because it secures your ownership outright and stops all further interest payments.

Common repayment vehicles include:

• ISA savings or investment bonds
• Endowment policies (if they matured with sufficient value)
• Pension lump sum (typically you can take 25% of your pension pot tax-free)
• Sale of other property or assets
• Inheritance or family gift

Lenders will typically accept evidence of these funds when you respond to their 12-month review letter. Make sure your repayment vehicle is liquid and accessible when needed, because some investments have notice periods or redemption penalties.

2. Extend your existing interest-only term

This is the option most people don’t realise they have.

Many lenders will agree to extend your existing interest-only mortgage by another 5 to 10 years if:

• You can demonstrate a credible repayment plan that will mature during the extended term
• Your property has sufficient equity (usually at least 25-30%)
• You can comfortably afford the ongoing interest payments
• You haven’t reached the lender’s maximum lending age

This is often the simplest and cheapest option if you have a repayment vehicle that just needs more time to mature. For example, an investment portfolio that’s growing but hasn’t yet reached the required value, or you’re waiting to access pension funds when you reach retirement age.

Contact your lender as soon as you receive their review letter to discuss whether an extension is possible.

3. Make a partial capital repayment

If you have some savings but not enough to clear the full balance, consider paying off part of the capital.

For example, if you owe £200,000 but only have £50,000 in accessible savings, paying this off reduces your debt to £150,000. This can then make other options more viable:

• Easier to secure a term extension with a lower loan-to-value ratio
• Lower monthly payments if switching to repayment mortgage
• Reduced lump sum needed from future sale or investments

Speak to your lender about making a partial capital repayment without penalty. Most interest-only mortgages allow overpayments up to 10% per year without early repayment charges, but check your specific terms.

4. Switch to a repayment mortgage

Some lenders will let you convert your interest-only mortgage to a repayment mortgage, allowing you to pay off the debt gradually over a new term.

The catch: monthly payments will be significantly higher because you’ll now be paying both interest and capital.

For example, if you have £150,000 outstanding and switch to a 15-year repayment mortgage at 5% interest, your monthly payment would jump from around £625 (interest-only) to approximately £1,186 (repayment): nearly double.

Eligibility depends on:

• Your age (most lenders won’t extend beyond age 70-75, though some go to 80)
• Your income (you’ll need to pass affordability assessments based on the higher payment)
• Your credit history
• The property value and loan-to-value ratio

This option works best if you’re still working with a strong income and have at least 10-15 years before retirement.

5. Remortgage with another lender

If your current lender won’t extend your term or switch you to repayment, you might find another lender willing to take you on.

Your options include:

A new interest-only mortgage (though these are much harder to get now, as explained above; you’ll need solid evidence of repayment strategy)

A retirement interest-only mortgage (RIO) if you’re an older borrower. More on this below.

Part repayment, part interest-only arrangements where you pay down some capital each month while keeping a portion interest-only.

Be aware that remortgaging involves costs:

• Arrangement fees (typically £500-£2,000)
• Valuation fees (£200-£1,000 depending on property value)
• Legal fees (£500-£1,500)
• Possible early repayment charge from existing lender if still in fixed/discount period

Use a mortgage broker who specialises in later-life lending to find the best options for your circumstances.

6. Retirement interest-only mortgage (RIO)

If you’re an older borrower (typically 55 or over, though age requirements vary by lender), a RIO mortgage might be suitable.

How RIOs work:

• You pay only the monthly interest, just like a standard interest-only mortgage
• The capital is repaid when you die or move into long-term care (from the sale of the property)
• There’s no fixed end date to the mortgage term
• You must have sufficient income to afford the interest payments (pension, rental income, etc.)

RIOs were introduced specifically to help older borrowers who would otherwise struggle to secure traditional mortgage lending due to age limits.

Key points:

• RIOs are regulated by the FCA, so you must use a regulated mortgage adviser
• Interest rates are typically higher than standard mortgages
• You’ll need at least 25-30% equity in the property
• Your estate will have less value to pass on, as the mortgage must be repaid from sale proceeds

This can be a good solution if you want to stay in your home indefinitely and have sufficient income to cover the interest, but cannot repay the capital.

7. Equity release (for over-55s)

If you’re over 55 and want to stay in your home without making monthly payments, equity release lets you access the value tied up in your property.

The most common type is a lifetime mortgage:

• You borrow a lump sum (or draw down amounts as needed) against your home’s value
• No monthly payments required: interest compounds (rolls up) and is added to the loan
• The loan plus accumulated interest is repaid when you die or move into long-term care
• You retain ownership and can stay in your home for life

Typical lifetime mortgages allow you to borrow 20% to 50% of your property value, depending on your age (older borrowers can access higher percentages).

You must:

• Use an FCA-regulated equity release adviser
• Consider choosing a provider who’s a member of the Equity Release Council. While not legally mandatory, membership provides additional voluntary consumer protections including a no-negative-equity guarantee
• Seek independent legal advice
• Discuss with family members who may be affected by inheritance reduction

Equity release can be right for some people, particularly those with substantial property wealth and limited pension income, but it’s crucial to understand the long-term costs and explore all alternatives first.

8. Sell your property

Selling your home allows you to clear the mortgage debt entirely. If your property has increased in value since you bought it, you’ll have equity left over.

This equity can then be used to:

• Buy somewhere smaller outright
• Buy another property with a smaller mortgage
• Rent and invest the remaining capital for income
• Downsize to a retirement property or relocate to a cheaper area

Traditional estate agent route:

Selling through an estate agent can take months. Based on current market data, the average time from listing to completion is around 5-6 months, with approximately 20% of sales falling through.

If your mortgage end date is approaching and you don’t have months to spare, this route carries risk.

Fast cash sale:

This is where Property Rescue can help.

Because of our Sale and Rent Back service, we’re one of the only house buying companies in the UK that’s regulated by the FCA (Register number 522471).

We’ve been buying properties for cash since 2005, and about 60% of our purchases involve homeowners in your exact situation: facing an expiring interest-only mortgage without a clear repayment plan.

Here’s how we’re different:

• We provide a no-obligation cash offer within hours of your enquiry
• We can exchange contracts in as little as 48 hours
• Completion typically happens within 2-4 weeks (or we can work to your preferred timeframe)
• We cover the legal fees
• There’s no chain, no risk of the sale falling through, and no buyer mortgage uncertainty

Over the last 3 years we’ve completed more than 500 property purchases, with 98% of accepted offers completing successfully and an average completion time of 28 days.

You can pay off your mortgage debt, avoid repossession, and pocket any remaining equity if the property has increased in value since you bought it.

We typically offer around 80% of market value for a fast sale. Though when you factor in estate agent fees (averaging 1.42% according to the HomeOwners Alliance), the time cost of holding the property, and the certainty of completion, the net difference is often smaller than you’d think.

What if the sale proceeds won’t cover your mortgage debt?

This is a situation some homeowners face, particularly if:

• House prices have fallen or stagnated in your area
• You’ve taken out additional borrowing secured on the property
• You have minimal equity after fees and costs

If you’re in negative equity (the mortgage is worth more than the property), or very close to it, selling becomes complicated.

What happens:

When you sell, the lender gets paid first from the proceeds. If there’s a shortfall, you’ll still owe this as an unsecured debt.

For example, if you owe £200,000 but your property only sells for £180,000 (after fees), you’ll still owe the lender £20,000. This doesn’t just disappear.

Your options include:

• Negotiating a repayment plan with the lender for the shortfall
• Using other savings or assets to clear the shortfall
• Seeking debt advice from organisations like StepChange or Money Helper

In serious cases where the debt is unmanageable, you may need to consider insolvency options, but this should be an absolute last resort, and you should seek specialist debt advice before going down this route.

The important thing is to engage with your lender early. They would much rather work with you on a solution than pursue repossession proceedings, which are costly and time-consuming for both parties.

Tax implications to consider

Depending on your circumstances, there may be tax consequences to consider when dealing with your interest-only mortgage:

Capital Gains Tax (CGT)

If the property you’re selling is not your main residence (for example, it’s a buy-to-let property with an interest-only mortgage), you may be liable for Capital Gains Tax on any profit.

For UK residential property disposals from 6 April 2025, Capital Gains Tax is charged at:

• 18% on gains that fall within your unused basic-rate Income Tax band
• 24% on gains above the basic-rate band (threshold: £50,270)

You have an annual CGT allowance of £3,000 (tax year 2025/26), meaning you only pay tax on gains above this threshold.

Important: If Capital Gains Tax is due on a UK residential property sale, UK residents must report and pay it within 60 days of completion using HMRC’s UK property service. This is separate from your Self Assessment return, and late filing can result in penalties.

If you’re selling your main residence, you’re typically protected by Private Residence Relief and won’t pay CGT.

Inheritance Tax (IHT) and equity release

If you take out equity release, this decreases the net value of your estate for Inheritance Tax purposes, because the loan sits as a debt against the estate.

While this can reduce potential IHT liability (fewer net assets after debts are deducted), it also means less passes to your beneficiaries.

This is a complex area, and if your estate is likely to exceed the IHT threshold (currently £325,000, or up to £500,000 if leaving your home to direct descendants), you should speak to a tax adviser.

Important: This article provides general information only. Your personal tax situation is unique, and you should consult an accountant or tax adviser for specific guidance.

What to do before your mortgage ends

Don’t wait until the last minute to address an ending interest-only mortgage.

Here’s your action plan:

12 months before term end:

Contact your lender proactively if your mortgage is approaching maturity. While many lenders send review letters, don’t wait for one; initiate the conversation yourself.

Be honest about your situation. Lenders would much rather work with you to find a solution than pursue possession proceedings.

9-12 months before:

Review your finances and calculate your options:

• How much could you raise from savings, investments, or pension?
• What would your monthly payments be if switching to repayment mortgage?
• What’s your property worth, and how much equity do you have?
• Could you make a partial capital repayment to reduce the debt?

6-9 months before:

Get independent financial advice about remortgaging, RIO mortgages, or equity release. These are complex products, and professional guidance is essential.

Use an independent financial adviser regulated by the FCA. You can find one through Unbiased or VouchedFor.

If you’re considering equity release specifically, you must use a suitably qualified FCA-authorised adviser. Many people prefer advisers and providers who are members of the Equity Release Council because they follow additional voluntary standards and protections.

3-6 months before:

If selling is your best option, get your property valued and understand realistic timescales.

For a traditional estate agent sale, you’ll need at least 4-6 months to be safe (accounting for potential fall-throughs and delays).

If you don’t have that time, or want certainty of completion, get a no-obligation quote from Property Rescue. We can provide an offer within hours and complete in as little as 2-4 weeks.

General advice:

Don’t ignore the problem. Hoping it will somehow resolve itself is the worst possible strategy.

Don’t assume your only option is selling. As we’ve covered, there are multiple paths depending on your circumstances.

Don’t make rushed decisions without advice. Products like equity release have long-term implications, so take time to understand what you’re signing up for.

Taking action early gives you more control over the outcome and helps you avoid the stress of last-minute decisions or, worst case, repossession proceedings.