The average two-year fixed mortgage rate has climbed to 5.75% as of 27 March 2026, according to Mortgage Finance Gazette. That is a sharp 92 basis point (bps - hundredths of a percentage point) jump from just 4.83% on 26 February 2026, when geopolitical tensions escalated. For short-term accommodation (SA) operators who rely on mortgage finance to fund acquisitions and refinancing, this shift fundamentally changes the numbers.

This is not a gradual drift. Around three in four active lenders repriced products in the week of 27 March alone, according to Mortgage Finance Gazette. New mortgage deals are returning to market, but they are priced substantially higher than products available six weeks ago. For SA operators looking to refinance existing portfolios or fund new buys, the timing matters. Delays could cost tens of thousands.

What the Rate Rise Means for Your Cash Flow

The cheapest available two-year fixed deals have moved from 3.51% to 4.47% - a near full-percentage-point jump (Mortgage Finance Gazette, 27 March 2026). On a £250,000 loan over 25 years, this costs an extra £132 per month or roughly £1,600 annually. For SA operators running tight margins on nightly rates, that additional cost directly eats into profit.

Five-year fixed rates sit at 5.69%, up 74 basis points from 4.95% previously (Mortgage Finance Gazette, 27 March 2026). The overall mortgage average across all product types reached 5.65% on 27 March - the highest in 19 months - with a 25 basis point jump from just the previous Monday.

Your occupancy rate and nightly rate must now cover higher financing costs. If your SA unit was purchased with a two-year fix in early 2024 at around 3.5%, your renewal in early 2026 could jump more than two percentage points. That shifts the business case materially. Properties generating £800 to £1,000 per month in net profit may drop to £400 to £600 if financing costs double.

Product Availability Remains Constrained

Lenders pulled 1,620 mortgage products from the market between 9 March and 27 March 2026 (Mortgage Finance Gazette). Despite 160 new products returning to market in the final days of March, the market remains depleted. Fewer products mean fewer options to shop around, and less competitive pressure to hold rates down.

This constraint matters for SA operators with specialist financing needs. Limited choice forces higher interest rates on non-standard buy-to-let (BTL - buy-to-let mortgages used for investment properties, distinct from owner-occupier lending) mortgages or portfolio deals. Standard residential mortgages are painful enough; purpose-built SA finance is even tighter.

The velocity of change is notable. A 25 basis point jump in a single week signals market stress, not routine adjustment. Lenders repricing this rapidly usually signal confidence that rates will stay elevated or drift higher still.

Protecting Your Occupancy Economics

If your SA mortgage renews within the next 12 months, engage your broker immediately. Rate-lock options exist, though they carry upfront costs. The cost of rate protection now may seem steep. It may also seem cheap compared to a 2-plus percentage point jump when you actually refinance.

Review the economics of your SA portfolio against the new financing costs. If properties no longer work financially at 5.75% and above, a refinance may be the wrong move right now. Focusing on occupancy and nightly rates is an alternative. A 10% boost to your occupancy rate or a £50 increase in nightly rate per month covers much of the financing pain.

Consider speaking to your accountant about offsetting the higher interest cost against tax relief on your rental income. That does not remove the cash pressure, but it improves your net position.