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Mortgage Market Update: Swap Rate Surge Drives Rate Hikes

The UK mortgage market is seeing rate increases due to rising swap rates, impacting borrowers and landlords alike.

By David Sampson
26 July 2026
3 min read
UK mortgage rates article image for Mortgage Market Update Swap Rate Surge Drives Rate Hikes

TL;DR

  • The two-year swap rate has jumped to 4.258%, prompting lenders like Nationwide and HSBC to raise mortgage rates.
  • existing borrowers and new applicants will face higher costs.

Written by David Sampson for Mortgage118. Last updated 26 July 2026. Reviewed against our editorial standards. Editorial standards. Mortgage118 is a directory — not FCA-authorised and not a mortgage adviser.

The UK mortgage market is experiencing significant changes as swap rates surge, leading to increased mortgage pricing across various lenders. The rise in swap rates, driven by geopolitical tensions and rising oil prices, is making mortgages more expensive for borrowers, impacting both new and existing customers.

What is Driving the Rise in Mortgage Rates?

As of 22 July, the two-year swap rate reached 4.258%, up from 3.993% the previous month. Similarly, the five-year swap rate increased from 4.034% to 4.316%. This surge is attributed to escalating tensions between the US and Iran, particularly the closure of the Strait of Hormuz, which has led to a spike in oil prices, hitting $100 for the first time since May. These swap rate increases are a key indicator of future borrowing costs, impacting mortgage pricing significantly.

How Are Lenders Adjusting in the Mortgage Market?

Several lenders have already adjusted their mortgage rates in response to the rising swap rates. Nationwide has raised rates for existing borrowers, with the two-year fixed rate for additional borrowing at 60% loan to value (LTV) increasing from 4.37% to 4.6%. At 75% LTV, the rate rose from 4.46% to 4.68%. Similar increases were seen across the 80-90% LTV tiers and fee-free five-year fixed options. HSBC has also announced rate hikes effective from 27 July, marking the second increase within the same week. Accord has adjusted its pricing as of 24 July, raising fixed residential rates for new business up to 90% LTV by 0.2%.

What This Means for Borrowers and Landlords

For borrowers, the rise in mortgage rates means higher monthly payments and increased costs when seeking new loans or refinancing existing mortgages. Existing customers looking to switch products will also face elevated rates. For landlords, the changes in buy-to-let (BTL) rates, with increases of 0.1% across all new business rates, will affect profitability and cash flow. The adjustments made by lenders like TSB, which increased two-year fixed residential purchase rates by up to 0.2%, further compound the challenges for both new and existing borrowers. As mortgage pricing continues to rise, it is essential for borrowers to stay informed about current mortgage rates and consider their options carefully.

Frequently Asked Questions

How will the increase in swap rates affect my mortgage?

The increase in swap rates typically leads to higher mortgage rates, meaning you may face higher monthly payments if you’re taking out a new mortgage or refinancing an existing one.

What should I do if my lender raises my mortgage rate?

If your lender raises your mortgage rate, consider reviewing your options. You may want to explore switching to a different product or lender to secure a better rate, especially if you are nearing the end of your fixed-rate 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.