Mortgage Rates Set to Ease in Late 2026, But Iran Conflict Clouds Outlook

A senior figure in UK mortgage finance has forecast that the mortgage market will begin to meaningfully improve in the second half of 2026, offering a tentative timeline for relief to borrowers who have endured three years of elevated borrowing costs. The prediction comes with a significant caveat: continued uncertainty over the trajectory of the UK economy, driven in large part by the escalating conflict involving Iran, which has injected fresh volatility into energy prices, inflation expectations and gilt yields — the very inputs that determine mortgage pricing.

For property investors, this is not a peripheral geopolitical footnote. Mortgage pricing in the UK is set primarily off swap rates, which move in anticipation of Bank of England policy and broader macroeconomic risk. Since the escalation began, five-year swap rates have oscillated by as much as 30 basis points within a fortnight, a level of volatility not seen consistently since the aftermath of the 2022 mini-Budget. Lenders, wary of mispricing risk in a fast-moving environment, have responded by repricing products more frequently — some now adjusting fixed-rate ranges weekly rather than monthly, a pattern that makes forward planning for buyers and remortgagors considerably harder.

The current average two-year fixed mortgage rate sits at around 5.08%, with five-year fixes averaging closer to 4.83%, according to recent industry tracking. Both figures remain roughly 150 basis points above the sub-3% deals widely available before 2022, meaning the affordability gap for new borrowers remains substantial. If the predicted second-half 2026 improvement materialises, analysts suggest average rates could drift back towards the low 4% range — a meaningful shift, but still well short of the ultra-cheap borrowing conditions of the previous decade. Investors should not expect a return to historic lows; rather, a gradual normalisation is the more realistic scenario.

Regionally, the impact of continued higher-for-longer rates is uneven. In London and Surrey, where average loan sizes are largest, even modest rate movements translate into hundreds of pounds of monthly payment difference, continuing to suppress transaction volumes among first-time buyers and constraining upward price pressure in prime postcodes. By contrast, Manchester, Birmingham and Leeds — markets that have benefited from strong rental demand and comparatively lower entry prices — have shown more resilience, with buy-to-let investors continuing to transact despite tighter lending criteria, drawn by yields often exceeding 6.5% gross in select postcodes. Liverpool and Newcastle, meanwhile, remain among the most affordable major markets, and their lower average mortgage sizes mean borrowers there are somewhat insulated from the worst effects of rate volatility, sustaining steadier investor appetite even as national sentiment wavers.

The forward-looking implications differ sharply by market participant. Buy-to-let landlords face a mixed picture: those on interest-only products remortgaging in the next six months will likely encounter another uncomfortable repricing cycle before any H2 2026 relief arrives, squeezing net yields further and accelerating the slow exodus of smaller, leveraged landlords from the sector — a trend that continues to tighten rental supply and push rents higher across most major cities. First-time buyers, conversely, may find a narrow window of opportunity if lenders compete more aggressively on higher loan-to-value products ahead of any base rate cuts, though affordability stress-testing will remain a binding constraint. Developers, particularly those reliant on development finance rather than end-user mortgage availability, face perhaps the most acute near-term pressure, as elevated borrowing costs on construction loans continue to squeeze margins on schemes across the Midlands and North West, with several mid-sized housebuilders already signalling delayed phasing on new sites pending clearer rate guidance.

Commercial investors should treat the Iran-driven uncertainty as a distinct risk factor from the domestic mortgage story, but one that compounds it. Energy price volatility feeds directly into inflation forecasts, which the Bank of England must weigh against any decision to cut the base rate — currently held amid caution. A prolonged conflict that keeps oil prices elevated makes an early 2026 cut less likely, potentially pushing the anticipated improvement closer to the end of the year rather than the middle. Investors with capital ready to deploy should treat the coming two quarters as a period for positioning rather than waiting: securing rate locks, stress-testing portfolios against a further 12–18 months of rates above 4.5%, and prioritising markets — Manchester, Leeds, Newcastle — where rental yield cushions against financing cost volatility. The mortgage market's improvement is plausible and well-founded, but it is contingent on geopolitical de-escalation that lies entirely outside the control of lenders, borrowers or the Bank of England itself.