Buy-to-let remortgage rates in the UK are improving in parts of the market, but landlords should not switch on the headline rate alone. The real test is the total cost over the deal period, including product fees, valuation costs, legal work, rental stress testing, and any early repayment charge. If your current deal ends within the next six months, review both your existing lender’s product transfer and the wider remortgage market.

What has changed?

Some buy-to-let lenders have been cutting rates or improving remortgage ranges. That can help landlords whose fixed-rate deal is ending, especially after a period of higher borrowing costs. It does not mean every landlord will qualify for the cheapest deal.

Buy-to-let lenders still look closely at loan-to-value, rent, property type, landlord experience, credit profile, and whether the application is in a personal name or through a limited company. Rental cover is especially important. Many lenders test whether rent covers the mortgage payment by a required margin, often using a stressed interest rate rather than the advertised pay rate.

According to MoneyHelper, remortgaging means moving to a new mortgage deal, either with a new lender or sometimes by switching product with your current lender, and the costs need to be weighed against the saving (MoneyHelper, 2026).

Why the lowest rate may not be cheapest

A lower buy-to-let rate can come with a larger product fee. Some landlord mortgages charge a flat fee, while others charge a percentage of the loan. On a large mortgage, a percentage fee can wipe out much of the apparent saving.

Before choosing a deal, compare:

  1. The monthly payment during the fixed or tracker period.
  2. The product or arrangement fee.
  3. Any early repayment charge on the current loan.
  4. Valuation and legal costs.
  5. Whether the rent passes the lender’s stress test.
  6. Whether a product transfer avoids legal work and reduces admin.
  7. The reversion rate after the deal period ends.

MoneySavingExpert’s mortgage guidance highlights the need to compare fees as well as rates, because the cheapest-looking rate is not always the lowest total cost (MoneySavingExpert, 2026).

Fixed-rate or tracker?

A fixed-rate buy-to-let remortgage gives payment certainty for the initial deal period. That can help if rent only just covers costs, or if you want predictable cash flow for tax, maintenance, and service charges.

Read also: How to Remortgage Your Home in the UK: A Step-by-Step Guide

A tracker mortgage can move up or down, often in line with Bank Rate plus a set margin. The Bank of England says Bank Rate affects other interest rates in the economy and is used as a tool to keep inflation stable (Bank of England, 2026). Trackers may benefit if rates fall, but payments can rise if rates increase.

As of June 2026; rates change frequently, verify current terms with an FCA-authorised lender or adviser before deciding.

Should landlords remortgage now?

If your current deal is close to ending, start with your existing lender. A product transfer may be quicker and may avoid a new legal transfer, although it is not always the cheapest option. Then compare it with new-lender remortgage deals.

A full remortgage may make sense if another lender offers a lower total cost, better criteria, or allows extra borrowing for a further advance or capital raising. Extra borrowing increases risk and should be assessed carefully.

Which? also provides mortgage and property guidance for comparing mortgage choices and understanding the buying and borrowing process (Which?, 2026).

Practical next step

Gather your mortgage balance, property value, monthly rent, deal end date, current early repayment charge, and product fee options. Compare at least three routes: your current lender’s product transfer, a new fixed-rate remortgage, and a tracker or variable option if you can tolerate payment movement.

This article is general educational information, not regulated mortgage advice, personalised financial advice, lending advice, legal advice, or tax advice. Refisage is not authorised by the Financial Conduct Authority (FCA). Consider speaking to an FCA-authorised mortgage adviser and, where tax is relevant, a qualified tax professional before making a decision. Eligibility, fees, rental stress tests, and product availability vary by lender, property, and personal circumstances. Your home may be repossessed if you do not keep up repayments on your mortgage.