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Surge in Swap Rates Impacts the UK Mortgage Market

UK mortgage rates are rising due to increased swap rates, affecting borrowers and landlords alike.

By David Sampson
24 July 2026
4 min read
UK mortgage rates article image for Surge in Swap Rates Impacts the UK Mortgage Market

TL;DR

  • The two-year swap rate surged to 4.258%, prompting lenders like Nationwide and HSBC to raise mortgage rates.
  • borrowers should prepare for increased costs.

Written by David Sampson for Mortgage118. Last updated 24 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 rising swap rates prompt lenders to increase their mortgage pricing. This shift is primarily driven by geopolitical tensions, particularly the ongoing conflict between the US and Iran, which has led to soaring oil prices and, consequently, higher borrowing costs for consumers.

What are Swap Rates and Why Do They Matter?

Swap rates are critical indicators in the mortgage market, reflecting the cost of borrowing for lenders. When swap rates rise, lenders often pass these costs onto borrowers through higher mortgage rates. As of July 22, the two-year swap rate increased to 4.258%, a notable rise from 3.993% the previous month. The five-year swap rate also saw an increase, moving from 4.034% to 4.316%. These changes are largely attributed to escalating tensions in the Middle East, particularly the closure of the Strait of Hormuz, which has driven oil prices to $100 per barrel for the first time since May.

Which Lenders Are Raising Their Rates?

Several major lenders have reacted to the rising swap rates by adjusting their mortgage products. Nationwide has increased rates across various mortgage tiers for existing borrowers. For instance, their two-year fixed additional borrowing product at 60% loan to value (LTV) has risen from 4.37% to 4.6%, while the 75% LTV option increased from 4.46% to 4.68%. The fee-free five-year fixed options also saw similar increases.

HSBC has announced its second rate hike of the week, effective from July 27, while Accord raised its fixed residential new business rates by 0.2% as of July 24. TSB has also lifted its two-year fixed residential purchase and remortgage rates by up to 0.2%. Meanwhile, Virgin Money adjusted its product transfer rates, with residential pricing increasing by as much as 0.23%.

What This Means for Borrowers and Landlords

For borrowers, the recent rate hikes mean that mortgages are becoming more expensive, which could impact affordability and purchasing decisions. Existing homeowners looking to remortgage or switch products may find themselves facing higher costs. For landlords, the increases in buy-to-let (BTL) rates, such as those from Accord and TSB, could affect the profitability of their investments, especially if they rely on refinancing or new purchases.

Rachel Geddes, strategic lender relationship director at Mortgage Advice Bureau, noted that these increases are driven by rising swap rates rather than changes to the Bank of England base rate. Nevertheless, the effect on borrowers is significant, as they will need to adjust their budgets to accommodate higher mortgage payments.

What Should Borrowers Watch Next in the Mortgage Market?

As the situation evolves, borrowers should keep a close eye on further announcements from lenders regarding mortgage rates. The ongoing geopolitical tensions and their impact on swap rates will be important in determining future pricing. Additionally, potential changes to the Bank of England base rate could also influence mortgage costs in the coming months. Borrowers may want to consider exploring mortgage rate comparison tools to find the best available options.

Frequently Asked Questions

How do rising swap rates affect my mortgage?

Rising swap rates typically lead to increased mortgage rates, which means that borrowers may face higher monthly payments and overall borrowing costs.

What should I do if my mortgage rate increases?

If your mortgage rate increases, consider reviewing your options for remortgaging or switching to a different product. It may also be beneficial to consult with a mortgage advisor for tailored advice.

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.