1.8 Million Mortgage Deals Expiring in 2026: What Property Investors Must Do Now

Around 1.8 million fixed-rate mortgage deals are set to expire across the UK in 2026, creating the largest wave of forced mortgage decisions since the post-pandemic rate cycle began. For property investors, the implications extend far beyond personal financing — this remortgage surge is set to reshape transaction volumes, tenant demand, and the competitive landscape for buy-to-let portfolios throughout the year.

The Scale of the Wave

According to UK Finance, 1.8 million fixed-rate mortgages will reach maturity in 2026, up from 1.6 million that expired in 2025. The majority of those now facing renewal secured their deals at historic lows — the average five-year fixed rate in early 2021 stood at approximately 2.75%. Today's equivalent sits at around 4.40%, meaning borrowers rolling off those deals face a significant step-up in monthly costs. On a £200,000 mortgage over 30 years, that translates to several hundred pounds more per month.

The two-year fixed cohort tells a different story. Borrowers who locked in deals in early 2024, when the average two-year rate was 5.76%, may now benefit from the current market rate of approximately 4.25% — a meaningful reduction that could prompt earlier refinancing activity than lenders had anticipated. UK Finance forecasts that external remortgaging will grow 10% to £77 billion in 2026, with product transfers reaching £261 billion.

What Is Driving Rates Now

The Bank of England has cut its base rate six times since August 2024, bringing it down to 3.75%. That easing cycle has pushed fixed mortgage rates below 5% for the first time in years, with the average two-year fix now at 4.83% and the average five-year at 4.95%. However, the picture is not uniformly positive. Swap rates have risen in recent weeks amid global economic uncertainty, and several lenders have responded by increasing rather than cutting rates in the short term. The Association of Mortgage Intermediaries expects the base rate to settle around 3.0–3.25% by end of 2026, suggesting the direction of travel remains downward, but the path will not be linear.

The mortgage product environment is nonetheless unusually competitive. According to Moneyfacts, the market currently features more than 7,100 different products — the highest count since October 2007. Lenders including Nationwide, NatWest, and Santander have also been loosening affordability criteria, with loan-to-income ratios increasing to 6x at some institutions and Santander launching a 98% LTV product for first-time buyers in February 2026.

What This Means for Property Investors

For landlords and portfolio investors, the 2026 remortgage wave presents both risks and tactical opportunities. On the risk side, investors who secured buy-to-let mortgages at sub-3% rates and have not yet refinanced face genuine payment pressure. With SVR rates averaging 7.15–7.25% across major lenders, passivity is costly — a landlord with a £250,000 mortgage could be losing over £500 per month by failing to act. UK Finance data shows that buy-to-let arrears have fallen significantly, down 20% year-on-year in Q3 2025, suggesting most investors have adapted, but the pressure on those who have not is compounding.

On the opportunity side, the scale of the remortgage wave is creating fresh liquidity in the market. Homeowners facing cost increases are more likely to consider selling — either upgrading or downsizing — which adds incrementally to available stock. Combined with the UK Finance forecast that transaction volumes will hold broadly flat at 1.20 million in 2026, this means more churn within existing stock, creating acquisition windows for investors who have their financing ready. Portfolio investors using limited companies are particularly well-positioned, as product transfer options for corporate structures have expanded materially over the past twelve months.

Positioning for the Rest of 2026

The key strategic question for investors is timing. Those with deals expiring in the next four to six months should act now rather than wait for further rate cuts — the market has largely priced in expected Bank of England reductions already, and the cost of sitting on an SVR is a known and quantifiable loss. Lenders are increasingly offering rate-check services that allow borrowers to lock in deals early and switch if better options emerge before completion.

For portfolio investors considering new acquisitions, the current environment rewards preparation. Lenders are applying stricter affordability scrutiny despite loosening headline criteria, and the best deals go to borrowers with clean credit profiles, lower loan-to-value ratios, and demonstrable rental income. With Savills forecasting average UK property values to increase 22.2% over the next five years — led by the North West and Yorkshire at 28.8% — investors who secure competitive financing now are positioning themselves ahead of a market that is still, by historical standards, in the early stages of its recovery cycle.