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IMLA Releases Guide on Mortgage Rates in the Mortgage Market

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

By David Sampson
14 June 2026
3 min read
UK mortgage rates article image for IMLA Releases Guide on Mortgage Rates in the Mortgage Market

TL;DR

  • Swap rates have surged from around 3.6% to over 4.5% in early 2026.
  • this has led to a rise in average two-year fixed mortgage rates from 3.97% to 5.14%, affecting borrowers and intermediaries alike.

Written by David Sampson for Mortgage118. Last updated 14 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 launched a new report and a concise guide aimed at helping mortgage advisers better understand the relationship between swap rates and fixed-rate mortgage pricing. This initiative comes in response to significant fluctuations in swap rates earlier this year, which have directly impacted the mortgage market.

What Are Swap Rates and Why Are They Important?

Swap rates are critical in determining the pricing of fixed-rate mortgages. They represent the cost of exchanging fixed interest payments for floating ones over a specified period. As swap rates increase, lenders typically raise fixed mortgage rates to maintain their profit margins. This was notably observed between March and May 2026, when geopolitical tensions led to a sharp rise in swap rates, consequently pushing two-year fixed mortgage rates up by more than 1.1 percentage points.

How Have Recent Events Affected the Mortgage Market?

The recent conflict involving the US, Israel, and Iran has created uncertainty in financial markets, causing swap rates to rise significantly. This increase has had a direct effect on the mortgage market, with two-year fixed mortgage rates climbing from 3.97% to 5.14%. In contrast, tracker mortgage rates, which are linked directly to the Bank Rate, remained unaffected during this period. This divergence highlights the importance of understanding swap rates for those involved in the mortgage sector.

What This Means for Borrowers and Intermediaries

For borrowers, the rise in fixed mortgage rates signifies higher costs for securing a mortgage. This could lead to increased monthly payments and impact affordability, particularly for first-time buyers and those looking to remortgage. For intermediaries and brokers, understanding the nuances of swap rates is essential for advising clients effectively. The IMLA’s guide aims to bridge the knowledge gap, ensuring that mortgage professionals can navigate these changes confidently. For the latest figures, check the current mortgage rates.

Frequently Asked Questions

What should borrowers do in response to rising mortgage rates?

Borrowers should assess their current mortgage options and consider locking in fixed rates before they rise further. Consulting with a mortgage adviser can provide tailored advice based on individual circumstances.

How can intermediaries stay informed about swap rates?

Intermediaries can benefit from resources like the IMLA’s new guide, which offers insights into how swap rates influence fixed-rate pricing. Staying updated with financial news and market trends is also important.

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.