Interest-only mortgages remain a popular structure for many homeowners and investors—but when the term ends or a better rate is needed, remortgaging an interest-only loan can be more complex than expected.

In 2025, lender attitudes towards interest-only have tightened. While still available, especially to high-net-worth clients and landlords, the rules around affordability and repayment vehicles are under sharper focus. So if your term is ending or you’re coming off a fixed rate, here’s what you need to know.

The Basics: What Is an Interest-Only Remortgage?

With an interest-only mortgage, your monthly payments only cover the interest due—not the capital borrowed. At the end of the mortgage term, you’re expected to repay the original loan in full.

A remortgage allows you to:

• Switch to a new lender with better rates or terms
• Extend your mortgage term
• Refinance the existing interest-only debt
• Move part or all of the loan to capital repayment

But not all lenders are happy to take on interest-only borrowers—especially if you're nearing the end of the term or your repayment strategy isn't watertight.

Lender Expectations in 2025

To remortgage on an interest-only basis in 2025, most lenders will want to see:

• A clear and credible repayment plan (e.g. investments, property sale, pension lump sum)
• Sufficient equity—most interest-only remortgages are capped at 50–60% LTV
• Strong income—especially if the borrower is near retirement age
• Clean credit and manageable outgoings
• Exit plan suitability—especially important for older borrowers

Without these, you may be pushed toward capital repayment, part-and-part, or forced to sell.

Common Repayment Strategies

Here are the repayment options lenders are more likely to accept in 2025:

• Sale of main residence or second property (often post-retirement)
• Cash in investment portfolio or ISAs
• Endowment maturity (less common now)
• Pension drawdown or lump sum
• Sale of business or other assets

Lenders will assess not just the existence of these vehicles—but their adequacy. For example, planning to sell a property worth £1.2m to repay a £500k loan may work. Relying on vague “future savings” likely won’t.

Challenges You Might Face

Many borrowers are unaware of looming issues until it’s too late:

• End-of-term stress: If you don’t have a repayment plan, your current lender may demand full repayment or force a sale.
• Limited lender appetite: Some lenders have exited interest-only lending entirely or require stricter documentation than before.
• Age barriers: If you’re 55+, lenders may shorten the term or require specific retirement planning detail.
• Affordability hurdles: High monthly rent or debt payments could derail your remortgage plans, even if you’re asset-rich.

Your Options If You’re Stuck

If you don’t meet the criteria for an interest-only remortgage, here are some alternatives:

• Switch to part-and-part mortgage—where some of the loan is repaid monthly
• Downsize or sell and buy a cheaper home outright
• Use equity release (if aged 55+) to clear the loan
• Access bridging finance to buy time while selling
• Raise capital against other assets to repay the mortgage

The right option depends on your income, age, property value, and goals. It’s vital not to leave this until the final year of your term.

How Willow Private Finance Helps

We regularly work with:

• Clients in their 50s, 60s, and beyond with large interest-only loans
• High-net-worth individuals with multiple properties or investment strategies
• Landlords refinancing portfolios that include interest-only borrowing
• Homeowners with an upcoming mortgage expiry and no plan in place

We understand the whole of market and know which lenders are flexible, what repayment strategies work in practice, and how to present your case properly—especially when time is short.

📞 Want Help Navigating Today’s Market?

Book a free strategy call with one of our mortgage specialists.

We’ll help you find the smartest way forward—whatever rates do next.