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IMLA’s Guide on Mortgage Rates and the Mortgage Market

IMLA has launched a guide to help mortgage advisers navigate rising swap rates and their impact on fixed-rate mortgages.

By David Sampson
13 June 2026
2 min read
UK mortgage rates article image for IMLA s Guide on Mortgage Rates and the Mortgage Market

TL;DR

  • Swap rates have surged from around 3.6% to over 4.5% in just two months, causing average two-year fixed mortgage rates to rise from 3.97% to 5.14%.
  • mortgage advisers must grasp these changes to better assist clients.

Written by David Sampson for Mortgage118. Last updated 13 June 2026. Reviewed against our editorial standards. Editorial standards. Mortgage118 is a directory — not FCA-authorised and not a mortgage adviser.

The Intermediary Mortgage Lenders Association (IMLA) has released a comprehensive guide aimed at helping mortgage advisers understand the significance of swap rates and their influence on fixed-rate mortgage pricing. This initiative comes in light of recent market volatility, particularly following geopolitical tensions in early 2026 that have impacted swap rates significantly.

What are Swap Rates and Why Do They Matter?

Swap rates are essentially the cost of exchanging fixed interest payments for floating rates, which lenders use to manage their interest rate risk. They are important in determining the pricing of fixed-rate mortgages. The recent increase in swap rates from 3.6% to over 4.5% between March and May 2026 has led to a corresponding rise in average two-year fixed mortgage rates. Understanding this relationship is vital for mortgage advisers to effectively guide their clients.

How Have Fixed Mortgage Rates Changed?

During the same period when swap rates experienced a notable rise, average two-year fixed mortgage rates jumped from 3.97% to 5.14%. This increase of more than 1.1 percentage points can significantly affect borrowers looking for fixed-rate options, as higher rates translate to increased monthly payments. This shift underscores the importance of monitoring swap rates closely.

What This Means for the Mortgage Market

For borrowers, particularly those seeking fixed-rate mortgages, the recent uptick in rates could mean higher borrowing costs. Investors in the property market may also feel the impact, as higher mortgage rates can dampen demand and affect property valuations. It is essential for both borrowers and investors to stay informed about these changes to make educated decisions regarding their financing options.

Frequently Asked Questions

What should mortgage advisers focus on now?

Mortgage advisers should prioritize understanding the dynamics of swap rates and their direct impact on fixed-rate mortgage pricing to provide informed advice to clients.

How can borrowers prepare for rising mortgage rates?

Borrowers should consider locking in current mortgage rates where possible and explore different mortgage options to mitigate the impact of rising costs.

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.

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