When taking out a buy-to-let mortgage or remortgaging an existing rental property, landlords typically face various upfront costs including arrangement fees, broker fees, and valuation charges. Understanding whether these mortgage arrangement fees are deductible for landlords can make a significant difference to your tax bill, especially with larger portfolios where these costs can run into thousands of pounds.

The tax treatment of these costs depends on several factors: whether the mortgage relates to a new purchase or existing property, what the funds are used for, and whether you're operating as an individual landlord or through a limited company structure.

Are Mortgage Arrangement Fees Tax Deductible for Landlords?

Mortgage arrangement fees can be tax deductible for landlords, but the deductibility depends on the specific circumstances of the loan and what the borrowed funds are used for. HMRC's approach distinguishes between fees relating to new property acquisitions and those for existing rental properties.

For existing rental properties: Arrangement fees on remortgages or additional borrowing are typically deductible as revenue expenses, provided the funds are used for rental business purposes. This includes remortgaging to release equity for property maintenance, improvements, or purchasing additional rental properties.

For new property purchases: Arrangement fees form part of the capital cost of acquiring the property and are not immediately deductible against rental income. However, these costs can reduce your capital gains tax liability when you eventually sell the property.

Types of Fees and Their Tax Treatment

Mortgage Broker Fees

Broker fees for arranging BTL mortgages follow the same principles as direct lender arrangement fees. If you pay a broker £2,000 to arrange a remortgage on an existing rental property, this cost is typically deductible against your rental income. However, broker fees tax deductible BTL treatment changes if the broker fee relates to purchasing a new property - it becomes part of the capital cost.

Valuation and Survey Costs

Property valuations required by mortgage lenders are treated similarly to arrangement fees. For existing properties, these costs are usually revenue deductible. For new purchases, they form part of the acquisition costs and are treated as capital expenditure.

Legal fees for mortgage documentation on existing properties are typically deductible. However, legal fees for purchasing new properties are capital costs. If your solicitor charges £800 for remortgage work on an existing BTL property, this is usually a deductible expense.

Higher Lending Charges

These fees, sometimes charged on high loan-to-value mortgages, follow the same treatment as other arrangement fees based on whether they relate to new purchases or existing properties.

Section 24 Impact on Deductible Fees

Even when mortgage arrangement fees are deductible, individual landlords must consider the impact of Section 24 restrictions. While arrangement fees themselves aren't mortgage interest, they're often grouped with other loan costs that receive only basic rate tax relief.

For a higher rate taxpayer, this means arrangement fees provide tax relief at 20% rather than their marginal rate of 40%. This reduced relief is one factor driving many landlords to consider incorporation into limited companies, where full deductibility is maintained.

Limited Company vs Individual Ownership

Landlords operating through limited companies face different rules for loan setup costs. Companies can typically deduct arrangement fees in full against corporation tax, regardless of whether they relate to new purchases or existing properties, provided the borrowing is for business purposes.

For example, if a property company pays £3,000 in arrangement fees for a mortgage to purchase a new rental property, this cost can usually be deducted against rental profits in the year incurred, rather than being treated as a capital cost.

Timing of Deductions

Individual landlords must typically spread deductible arrangement fees over the life of the mortgage or claim them in the year paid, depending on their accounting method. Companies have more flexibility in timing these deductions to optimise their tax position.

Practical Examples of Fee Deductibility

Example 1: Remortgage for Portfolio Expansion

Sarah owns three rental properties and remortgages one property to release £100,000 equity for purchasing a fourth property. The arrangement fees of £2,500 relate to the remortgage of an existing rental property and are typically deductible against her rental income, subject to Section 24 restrictions.

Example 2: New Property Purchase

James purchases his first BTL property for £250,000 with a mortgage arrangement fee of £1,995. This fee forms part of his acquisition costs and isn't immediately deductible. However, it reduces his capital gains tax liability when he eventually sells the property.

Example 3: Refinancing for Improvements

Maria remortgages her rental property to fund a £30,000 extension. The £1,500 arrangement fee is deductible as a revenue expense because the refinancing relates to improving an existing rental property business asset.

Record Keeping and Documentation

Proper documentation is essential when claiming arrangement fee deductions. Keep records showing:

  • The purpose of the borrowing or remortgage
  • Invoices and receipts for all fees paid
  • Mortgage documentation linking fees to specific properties
  • Evidence that funds were used for rental business purposes

With Making Tax Digital becoming mandatory for landlords from April 2026, maintaining digital records of these transactions becomes increasingly important.

Common Pitfalls to Avoid

Several common mistakes can jeopardise the deductibility of arrangement fees:

Mixed-use borrowing: If you remortgage a rental property but use some funds for personal purposes, only the business portion of arrangement fees may be deductible. Maintain clear records showing the business use percentage.

Timing errors: Don't assume all arrangement fees are immediately deductible. Those relating to new purchases must be treated as capital costs, while existing property fees may be revenue deductible.

Incorrect categorisation: Ensure you categorise fees correctly in your accounts. Understanding all available deductions helps ensure you don't miss legitimate claims while avoiding incorrect ones.

Professional Advice and Planning

The complexity of mortgage arrangement fee deductibility, particularly when combined with Section 24 restrictions and various property ownership structures, often warrants professional guidance. Specialist property accountants can help structure your borrowing arrangements to maximise available tax relief.

For landlords with growing portfolios, the cumulative impact of arrangement fees and their tax treatment can significantly affect overall returns. Professional advice becomes particularly valuable when considering incorporation or restructuring existing arrangements to improve tax efficiency.

Before making decisions about mortgage arrangements or property structures, consider the full tax implications of your specific situation. What works for one landlord may not be optimal for another, depending on their income levels, portfolio size, and future plans.