Why Are Buy-to-Let Mortgage Rates Falling? The June 2026 Repricing Explained

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.

Market averages move more slowly. The most recently published Moneyfacts data put the average two-year BTL fixed rate at 5.46% and the average five-year fixed at 5.76%. Those figures are from April 2026. The repricing wave has not yet fed through to published averages, but the direction of the June cuts suggests the next Moneyfacts update will show a meaningful decline.

That gap between best-buy and average matters. A two-year fix at 3.05% is not what most landlords will see on a standard deal at 75% LTV. These are low loan-to-value products with significant arrangement fees attached. The headline rate is not the total cost. For a full breakdown of how to compare BTL mortgage costs properly, see BTL Remortgaging in 2026: How to Stress-Test Your Deal.

What "Falling Rates" Does Not Mean

Three things are worth keeping clear.

Rates have not returned to normal. The market average on a two-year fix sits above 5.46%. A landlord rolling off a 2021 five-year deal taken at around 2.5 to 3% is still moving onto financing costs roughly twice as high. The direction has improved. The level has not.

The ICR stress test has not changed. Regardless of what product rates do, lenders still assess BTL affordability against a minimum interest coverage ratio stress rate of 5.5%, set by the PRA's Supervisory Statement SS13/16. Basic rate taxpayers and limited company borrowers need rental income covering 125% of interest calculated at 5.5%. Higher rate personal landlords need 145%. A rate-cutting wave at lender level changes nothing about whether your property passes that test.

SWAP rates can reverse. The cuts of early June reflect today's conditions: softer April inflation, calmer energy markets. Both can change quickly. The Bank of England projects CPI rising to 3.1% in Q2 2026 and 3.3% in Q3 as energy price cap increases feed through. If May CPI, published on 17 June, comes in above expectations, SWAP rates will respond quickly. Lenders can reprice and withdraw products within days.

The June 18 MPC Decision

The Bank of England's next rate decision lands on 18 June 2026. Market pricing consistently points to a hold at 3.75%. At the April meeting, the vote was 8-1. Chief Economist Huw Pill was the sole dissenter, voting to raise to 4.0%, citing the risk that energy price inflation embeds itself in UK wage and price-setting.

A cut to 3.50% is not impossible. May CPI, published on 17 June, is the decisive data point. April's 2.8% undershot the Bank's own projections and raised the question of whether disinflation is running faster than expected. If May confirms that trend, the June decision becomes harder to call.

But the base case remains a hold. Even if the Bank does cut in June, a 25 basis point reduction from 3.75% to 3.50% does not fundamentally change the remortgage picture. SWAP rates would ease slightly and lenders might pass some of that through. The ICR stress rate stays at 5.5% regardless of what the Bank Rate does.

What to Do If You Are Remortgaging

Run your numbers at current rates, not at the rate on your existing deal.

A 2021 five-year fix rolling off in H2 2026 at around 2.5% into a market above 5% represents a significant jump in monthly costs. Model what the new payment looks like at 5%, at 5.5%, and at 5.76% (current average five-year fix). Factor in arrangement fees when comparing products. A lower headline rate with a large fee often costs more over two years than a slightly higher no-fee deal.

Most lenders allow you to lock in a rate up to six months ahead of your current deal expiry. That means you can secure today's pricing without waiting for your fix to end. If rates fall further before completion, some lenders allow you to take a lower rate if it becomes available. If rates move back up, you are protected.

Sitting on a standard variable rate while waiting for a rate bottom is an expensive strategy. SVR rates typically sit above 7%. The cost of waiting is immediate and concrete. The benefit of a lower rate arriving later is uncertain.

Use a specialist BTL broker with whole-of-market access. Best-buy headlines only tell part of the story. Criteria, fee structures, stress rate thresholds, and flexibility for portfolio and limited company structures vary significantly across lenders.

This article is for informational purposes only and does not constitute financial or investment advice. Tax rules and legislation change frequently. Always verify current rates with HMRC or GOV.UK and seek independent professional advice before making investment decisions.