Banks and building societies are repricing mortgage deals higher as lenders absorb the market fallout from the Middle East conflict. The Bank of England held Bank Rate at 3.75% at its April 2026 meeting, but that headline figure is masking a more complicated picture for borrowers and BTL (buy-to-let) investors alike.
Why Lenders Are Moving Rates Up
The data shows that the repricing wave is being driven by two forces working in the same direction. First, CPI inflation has risen to 3.3% - up from the Bank of England's February forecast - with energy prices the main culprit. According to the Bank of England Monetary Policy Summary (30 April 2026), household motor fuel costs are already elevated, and the Ofgem price cap increase is expected to push utility bills higher in Q3 2026.
Second, swap rates - the wholesale borrowing costs that lenders use to price fixed-rate mortgages - have risen as markets factor in a more uncertain inflation path. The gap between where Bank Rate sits and where swap rates are trading has widened since the conflict began. That gap is what borrowers feel directly in their monthly payments.
The MPC voted 8-1 to hold at 3.75%, with one member voting for a 0.25 percentage point rise to 4%. The Bank's own projections, based on energy futures data from 22 April 2026, suggest CPI inflation will average around 3.1% in Q2 2026 before rising back to 3.3% in Q3 - roughly 1.4 percentage points above the February forecast. Inflation is expected to climb further in Q4.
What This Means for BTL Investors
The trend is not heading in a direction that favours near-term rate relief. The Bank has signalled it will lean against any second-round effects in wage and price-setting. That means a rate cut is unlikely until the MPC sees sustained evidence that inflation is falling back toward the 2% target.
For BTL investors, the repricing matters beyond the monthly payment. ICR (interest coverage ratio) is the affordability test most lenders apply to BTL mortgages. Lenders stress test ICR at rates above the product rate - typically around 5.5% or higher, varying by lender. As base product rates climb, more properties fail this test. You can check current stress test thresholds and model your own portfolio using the free stress test calculator at Property Filter.
The underlying picture for BTL is that investors who locked into five-year fixed rates during 2021 and 2022, when rates were well below 2%, are now facing remortgage to products priced in a very different environment. According to the Bank of England (April 2026), financial conditions have tightened since the conflict began, and are expected to continue acting as a brake on inflation over the medium term - which suggests lenders will not be rushing to cut.
What Comes Next
The next MPC decision is due on 18 June 2026. Given the Bank's stated caution around second-round inflationary effects, the base case remains a hold. However, the 8-1 vote at April's meeting - with one member already pushing for a rise - suggests the MPC is not unanimous. A further upside inflation surprise before June could shift the balance.
Investors considering a purchase or refinance in the next quarter would do well to review their strategy options, including whether a tracker or fixed-rate product better fits their circumstances. The negotiation and finance guide at Property Filter covers the key questions to work through with a broker. For broader portfolio decisions, the property investment strategies guide sets out how the current rate environment affects different approaches.
The free resources hub also includes tools to help model affordability across a range of rate scenarios.
Key Takeaways
Bank Rate is held at 3.75% as of 29 April 2026, with the next decision due 18 June 2026.
CPI inflation has risen to 3.3%, driven by Middle East conflict energy price rises - the Bank expects it to go higher in Q4.
Lenders are repricing fixed-rate mortgages upward as swap rates reflect a more uncertain inflation path.
BTL stress tests are typically applied at 5.5% or above - rising product rates put more deals outside affordability thresholds.
The MPC voted 8-1 to hold, with one dissenting vote for a rise - a cut before late 2026 looks increasingly unlikely.
