Why Are Buy-to-Let Mortgage Rates Falling? The June 2026 Repricing Explained
RealYield Team
Property Analyst
More than a dozen lenders cut buy-to-let mortgage rates in the first week of June 2026. The direction has shifted. But "direction has shifted" is not the same as "rates are back to normal".
In the week of 1-5 June, Halifax, Coventry Building Society, Santander, TSB, HSBC, The Mortgage Works, ModaMortgages, Molo, Leeds Building Society, LendInvest, Landbay, Fleet Mortgages, Paragon Bank and others all moved BTL pricing down. NatWest followed with its third reduction in a fortnight from 8 June, covering new business, existing customer and additional borrowing ranges. It was the broadest repricing of BTL rates since before the April spike.
Here is what drove the cuts, what the new rates actually look like, and what it means if you are remortgaging in H2 2026.
Why Lenders Are Cutting
BTL fixed-rate mortgages are not priced off the Bank of England base rate. They are priced off SWAP rates, which represent the cost at which lenders can lock in funding for the duration of a fixed-rate product. When SWAP rates fall, lenders' funding costs fall, and competitive pressure pushes them to pass savings through to borrowers.
Two things drove SWAP rates lower through May and into early June. First, April 2026 CPI came in at 2.8%, down sharply from 3.3% in March. That undershot the Bank of England's own projections and eased some of the inflation pressure that had pushed SWAP rates to their April peak. Second, energy market tensions, a primary driver of the April spike, partially calmed.
SWAP rates drifted lower through the period. Lenders, competing for remortgage volumes after a subdued spring, responded with widespread cuts. As mortgage experts noted on 4 June: "Mortgage rates have stabilised and are coming down. Swaps have responded positively to some stabilisation in global tensions."
What the New Rates Look Like
Best-buy rates tell the headline story. On 2 June 2026, Molo was offering two-year fixed BTL deals from 3.05% and five-year fixes from 4.75%. ModaMortgages cut its standard BTL two-year rate by 20 basis points, with deals now from 3.34%, and HMO and multi-unit products from 3.44%. TSB cut two and five-year fixed BTL rates at 60 to 75% LTV by up to 0.80% on selected portfolio products. Santander trimmed across its BTL range by up to 0.17% on 4 June. NatWest's successive cuts through the month covered its full new business range.
Frequently Asked Questions
Why are buy-to-let mortgage rates falling in June 2026?
Lenders are cutting BTL rates because SWAP rates have drifted lower since their April 2026 peak. SWAP rates reflect market expectations for future interest rates. April CPI fell to 2.8% (from 3.3% in March), easing inflation pressure and reducing lenders' funding costs. More than a dozen lenders repriced BTL products in the week of 1-5 June 2026.
What are the best buy-to-let mortgage rates in June 2026?
Best-buy BTL two-year fixed rates reached from 3.05% (Molo, 2 June 2026) and five-year rates from 4.75% (Molo, 2 June 2026). These are low-LTV deals with significant arrangement fees attached. Market averages remain elevated at 5.46% (two-year) and 5.76% (five-year) based on Moneyfacts data from April 2026. The headline best-buy rate is not representative of what most landlords will be offered.
Does the Bank of England rate affect buy-to-let mortgage rates?
Not directly. Fixed-rate BTL mortgages are priced off SWAP rates, which reflect market expectations for future rates rather than the current Bank Rate. The Bank held at 3.75% on 30 April 2026, but SWAP rates have moved independently since then, driven by inflation data and energy market conditions.
Should I lock in a BTL mortgage rate now or wait for rates to fall further?
There is no guarantee rates will continue falling. SWAP rates can reverse quickly if inflation data surprises higher or energy market conditions change. Most lenders allow you to secure a rate up to six months before your deal expires. You can lock in now without waiting for your current fix to end. Running your numbers at current rates is more useful than waiting for a bottom that may not arrive on your timetable.
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