BTL Mortgage Fees in 2026: What You Are Really Paying and How to Cut Your Costs
RealYield Team
Property Analyst
When landlords compare buy-to-let mortgages, the interest rate gets most of the attention. The fees rarely do. That is a mistake that can cost you several thousand pounds per deal.
Mortgage fees on BTL products have climbed significantly over the past decade, and the structure has changed too. What was once a predictable flat fee is now frequently a percentage of the loan amount, which can translate to very large charges on larger portfolios. Understanding exactly what you are paying, and why, is one of the more straightforward ways to protect your net yield.
What Fees Are Involved in a BTL Mortgage?
There are three main categories of cost when you take out or remortgage a buy-to-let loan.
Arrangement Fees
Also called product fees, these are charged by the lender for setting up the mortgage. They are the biggest variable and the one that has shifted most sharply in recent years.
Arrangement fees come in two forms. A flat fee is a fixed charge regardless of loan size, typically ranging from £999 to £3,999 on current products. A percentage fee is calculated as a proportion of the loan, and this is where costs can escalate quickly. Some lenders charge 1-3% as standard. In certain cases, particularly competitive low-rate products, percentage fees of 5-7% of the loan amount have appeared in the market (Moneyfacts, August 2023; mfbrokers.co.uk, July 2024).
On a £200,000 BTL mortgage, a 3% arrangement fee is £6,000. A 7% fee is £14,000. These are not small numbers, and they compound if added to the loan balance rather than paid upfront.
Valuation Fees
Lenders require a valuation to confirm the property provides adequate security for the loan. The fee is paid by the borrower, is generally non-refundable, and varies by property value.
Current typical ranges for a basic mortgage valuation in 2025 (source: landlordstudio.com, 2025):
- Properties up to £100,000: £150-£250
- Properties £100,000-£250,000: £200-£350
- Properties £250,000-£500,000: £300-£500
- Properties £500,000-£1,000,000: £450-£800
Some lenders offer free basic valuations on certain products, though these are usually reserved for straightforward residential remortgages rather than BTL purchases. For properties with complications, such as HMOs, commercial units above, or non-standard construction, the valuation fee is almost always charged and often higher.
Note that a basic mortgage valuation only tells the lender what they need to know. It does not assess the property's condition in detail. Most experienced landlords commission at least a HomeBuyer Report on purchase, which will add £400-£750 for a typical property.
Legal Fees
Conveyancing costs cover the solicitor's work in completing the purchase: property searches, handling contracts, Land Registry registration, and anti-money laundering checks.
Conveyancing fees for a buy-to-let purchase in 2025 typically range from £1,000 to £2,500 depending on property value and complexity (landlordstudio.com, 2025; propertyinvestmentsuk.co.uk, 2025). Leasehold properties add roughly £150-£450 to legal costs due to the additional work involved.
Frequently Asked Questions
What is the average BTL mortgage arrangement fee in 2026?
Arrangement fees on buy-to-let mortgages currently range from around £999 to £3,999 as a fixed amount, or up to 3-7% of the loan value on percentage-based products. Lower-rate deals typically carry higher fees, so you should always compare the total cost of the mortgage over your chosen term rather than the headline rate alone.
Can I add mortgage fees to my BTL loan?
Yes, most lenders allow you to add arrangement fees to the mortgage balance rather than paying them upfront. However, you will then pay interest on that fee amount for the life of the product, which increases your total borrowing cost. For larger fees, it is worth calculating the true cost either way before deciding.
How do mortgage fees affect gross yield calculations?
Gross yield only measures annual rent against purchase price. It does not account for mortgage arrangement fees, valuation fees, or legal costs. To understand your real return, calculate net yield by subtracting all acquisition costs and annual running costs from your rental income. RealYield's yield calculator includes mortgage costs in its net yield model.
Are BTL mortgage broker fees worth paying?
A good mortgage broker should save you more in interest and fees than their charge. Broker fees typically range from £250 to £1,000, or 0.5-1% of the loan amount. For anything other than a straightforward remortgage on a single property at standard LTV, using a broker is usually worthwhile.
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