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Switching from Interest-Only to Repayment Mortgages

Homeowners can switch from interest-only to repayment mortgages, allowing for effective debt management.

By David Sampson
4 June 2026
3 min read
UK remortgage article image for Switching from Interest-Only to Repayment Mortgages

TL;DR

  • Homeowners can convert an interest-only mortgage to a repayment mortgage while remortgaging.
  • this can help consolidate debt effectively, but affordability assessments are important.

Written by David Sampson for Mortgage118. Last updated 4 June 2026. Reviewed against our editorial standards. Editorial standards. Mortgage118 is a directory — not FCA-authorised and not a mortgage adviser.

Borrowers looking to transition from an interest-only mortgage to a repayment mortgage can do so during the remortgaging process. This change is significant as it allows homeowners to manage their debt more effectively while ensuring their mortgage is repaid over time.

How Can You Switch from an Interest-Only Mortgage?

When considering a switch from an interest-only mortgage to a repayment mortgage, homeowners need to be aware of several factors. The mortgage must be remortgaged, and lenders will evaluate your financial situation, including household income, employment type, and existing financial commitments. This assessment ensures that the new repayment plan aligns with your affordability.

What Are the Key Considerations for Interest-Only Mortgage Borrowers?

Several elements will influence the transition from interest-only to repayment. Lenders typically have varying maximum loan-to-value (LTV) ratios, but for many, a valuation of £170,000 with an outstanding balance of £95,000 would place you at an 85% LTV. This is a common threshold among lenders. Additionally, the mortgage term will be structured to ensure the debt is repaid within your financial means.

What Does Debt Consolidation Involve?

In this scenario, the homeowner intends to borrow an additional £50,000 to pay off existing loans and credit cards. This practice, known as debt consolidation, can simplify monthly payments but may result in higher overall interest costs, as the debt is stretched over the longer mortgage term. It’s vital for borrowers to weigh the benefits against the potential increase in interest payments.

What This Means for Homeowners with Interest-Only Mortgages

For homeowners currently on an interest-only mortgage, switching to a repayment model can provide a structured path to debt management and financial stability. However, it’s essential to conduct a thorough affordability assessment before proceeding. Those considering debt consolidation should also be aware of the implications on their overall financial health.

Frequently Asked Questions

Can I switch from an interest-only mortgage to a repayment mortgage?

Yes, you can switch to a repayment mortgage when remortgaging, provided you meet the lender’s affordability criteria.

What are the risks of debt consolidation through a mortgage?

While debt consolidation can simplify payments, it may lead to higher overall interest costs due to the extended repayment period.

About David Sampson

David Sampson writes about the UK mortgage market for Mortgage118, covering specialist lending, market trends, and practical advice for borrowers. All content is reviewed for accuracy against FCA guidelines and current market data.