Landlords

The Complete Guide to Allowable Expenses for Landlords

What expenses can landlords claim against rental income? Blue Tick's complete guide covers repairs, agent fees, insurance, and more. Find out more.

The Complete Guide to Allowable Expenses for Landlords

Rental property income is taxable, but not all of it. HMRC allows landlords to deduct a range of expenses from their rental income before calculating the tax owed, and knowing precisely which costs qualify can make a significant difference to your annual tax bill. The allowable expenses for landlords in the UK are more varied than many property owners realise, and getting this right requires understanding both what is permitted and, equally importantly, what is not.

This guide provides a comprehensive overview of allowable expenses for landlords in the UK, covering every major category from repairs and insurance through to professional fees and the critical distinction between capital and revenue expenditure. All figures and rules reflect the current 2026/27 tax year.

In this guide:

  • The core principle behind allowable expenses
  • Revenue expenses you can claim in full
  • The capital versus revenue distinction and why it matters
  • Expenses you cannot claim (and common mistakes to avoid)
  • A worked example showing the impact on your tax bill
  • How to keep records HMRC will accept

The Core Principle: Wholly and Exclusively

Every allowable expense claim rests on a single legal test: the cost must have been incurred wholly and exclusively for the purposes of the rental business. This phrase comes directly from HMRC guidance and is the standard against which all claimed expenses are measured.

In practice, this means two things. First, the cost must be a genuine business cost, not a personal one. Second, where a cost has a dual purpose, such as a phone used for both personal and business calls, only the business element is allowable. You cannot claim the personal portion, even if the business element is greater.

This principle applies whether you are completing a self-assessment return under the cash basis or accruals basis. Most individual landlords with rental income below £150,000 use the cash basis, which means you deduct expenses in the year they are paid, not the year the obligation arises.

Revenue Expenses You Can Claim Against Rental Income

The following categories of expenditure are generally allowable as revenue expenses, meaning they can be deducted in the year they are incurred rather than spread over time.

Letting Agent Fees and Management Charges

If you use a letting agent to find tenants, collect rent, manage maintenance, or handle day-to-day administration, their fees are fully allowable. This includes tenant-find fees (typically the equivalent of one month's rent), ongoing management fees (commonly 8 to 15% of monthly rent), and any additional charges for inventory preparation, check-in/check-out services, or annual rent reviews.

Buy-to-let expenses paid to agents are among the most straightforward deductions available and should always be included.

Repairs and Maintenance

Repairs and routine maintenance costs are allowable as revenue expenditure, provided they restore the property to its previous condition rather than improve it beyond its original state.

Allowable repairs include:

  • Fixing a broken boiler or replacing a failed component within an existing heating system
  • Repainting walls and ceilings to the same standard
  • Repairing a roof that has been damaged by weather
  • Replacing broken windows, doors, or fences on a like-for-like basis
  • Mending guttering, drainage, or plumbing faults

The definition of a repair is important: it must restore, not improve. Replacing a standard kitchen with a higher-specification fitted kitchen is not a repair. Replacing it with an equivalent kitchen of similar quality usually is. HMRC applies a test of whether the asset has been improved beyond its original function and quality.

Replacement of domestic items in furnished properties is treated under a specific relief (see the capital section below), not as a repair expense.

Insurance Premiums

Landlord insurance is fully allowable. This includes buildings insurance, contents insurance (where contents are provided as part of a furnished let), landlord liability insurance, and rent guarantee insurance. Standard home contents policies that are not specific to a rental property are not allowable.

Utility Bills and Council Tax (Where Paid by the Landlord)

If the landlord pays utility bills or council tax directly (for example, during void periods or where the tenancy agreement requires it), these costs are allowable as rental property tax deductions. If tenants pay these costs directly, they are not landlord expenses.

Ground Rent and Service Charges

For leasehold properties, ground rent and service charges paid to the freeholder or managing agent are allowable in full. This is a commonly overlooked deduction, particularly for landlords who own flats.

Professional Fees

Accountancy fees for preparing your rental accounts and self-assessment return are allowable. Legal fees related to the letting, such as drawing up a tenancy agreement or pursuing rent arrears through the courts, are also allowable. However, legal fees connected with the purchase or sale of a property are capital costs, not allowable expenses.

Interest on Loans: A Critical Distinction

Mortgage interest and loan interest costs are no longer deductible as a standard revenue expense for individual landlords. The Section 24 restriction, fully phased in since 2020, means that individual landlords can only claim a basic-rate tax credit (at 20%) on their finance costs, not a full deduction. This restriction applies to residential property let by individuals; it does not apply to commercial property or to properties held through a limited company.

This means a higher-rate taxpayer cannot claim relief at 40% on their mortgage interest. They receive only the 20% basic-rate credit, which substantially increases their effective tax rate.

The Capital Versus Revenue Distinction

Understanding the difference between capital and revenue expenditure is one of the most important skills a landlord can develop, because HMRC draws a firm line between the two.

Revenue expenditure is deducted immediately against rental income in the year it is incurred. Capital expenditure improves the long-term value of the property and cannot be deducted immediately from rental income in the same way. Instead, capital costs are recorded and used to reduce any capital gains tax liability when the property is eventually sold, by increasing the acquisition cost for CGT purposes.

Common capital expenditure items include:

  • Extensions and loft conversions
  • Converting a garage into a habitable room
  • Installing a new kitchen that significantly upgrades the original
  • Adding a conservatory or outbuilding
  • Full rewiring or replacement plumbing (where this goes beyond like-for-like repair)

Replacement of domestic items relief applies specifically to furnished residential lettings. Where a landlord replaces a domestic item (a sofa, a washing machine, a bed frame) with a like-for-like equivalent, the cost of the replacement is allowable as a revenue deduction. The original purchase cost of the item when the property was first let is not deductible. Only replacements qualify.

Expenses You Cannot Claim

Certain costs that landlords might expect to be deductible are not allowable, and claiming them incorrectly risks an HMRC enquiry.

Non-allowable expenses include:

  • The original purchase price of the property (a capital cost)
  • Mortgage capital repayments (only the interest element, subject to Section 24, is relevant to income tax)
  • Costs of your own labour if you carry out maintenance yourself; you cannot charge a salary or daily rate for your own work
  • Improvements that increase the property's value beyond its pre-existing condition
  • Personal expenses with no clear business purpose
  • Expenditure on a property before it was first let (pre-letting expenses are generally not deductible, though some limited exceptions may apply)

Worked Example: The Impact of Allowable Expenses on a Landlord's Tax Bill

James owns a two-bedroom flat in Guildford that he lets at £1,500 per month, giving annual rental income of £18,000. He is a higher-rate taxpayer with employment income of £65,000.

His allowable expenses for 2026/27 are:

  • Letting agent management fee (10% of rent): £1,800
  • Buildings and landlord liability insurance: £550
  • Service charge and ground rent: £1,200
  • Repairs (boiler service, repainting hallway, fence repair): £820
  • Accountancy fee for rental accounts: £300
  • Total allowable expenses: £4,670

Taxable rental profit: £18,000 minus £4,670 = £13,330

Because James is a higher-rate taxpayer, this rental profit is taxed at 40%. His rental income tax before the mortgage credit is £5,332. He also has a mortgage on the property with annual interest of £5,400, for which he can claim a basic-rate credit (20% x £5,400 = £1,080), reducing his final tax to £4,252.

Had James been able to claim full mortgage interest relief (as was the case before Section 24), his net rental profit would have been £13,330 minus £5,400 = £7,930, taxed at 40% = £3,172. The Section 24 restriction costs him approximately £1,080 more per year in this example.

Making Tax Digital and Record-Keeping Requirements

From 6 April 2026, landlords with total qualifying income (property plus self-employment) above £50,000 are required to use Making Tax Digital for Income Tax (MTD for IT). This means keeping digital records in HMRC-compatible software and submitting quarterly updates of income and expenses, followed by a year-end final declaration. Landlords with income above £30,000 will join MTD from April 2027.

For landlords below the current threshold, traditional self-assessment continues. In either case, HMRC expects records to be retained for at least five years after the 31 January filing deadline for the relevant tax year. For buy-to-let expenses, this means keeping:

  • Receipts and invoices for all repairs, maintenance, and purchases
  • Bank statements showing payments
  • Letting agent statements showing income received and fees charged
  • Insurance documents and renewal certificates
  • Service charge and ground rent demands with evidence of payment
  • Mortgage statements showing interest charged

Digital records stored in cloud accounting software or even a well-organised folder of scanned receipts are acceptable. HMRC does not require paper originals. The key requirement is that records must be complete, legible, and available on request.

How Blue Tick Can Help

Identifying and correctly claiming every allowable expense is one of the most effective ways to reduce a landlord's tax liability lawfully. Blue Tick advises buy-to-let landlords on their rental tax obligations, prepares property income accounts, and ensures that every eligible deduction is claimed whilst keeping the return fully compliant with HMRC guidance. Head to our website and book a meeting now.

Final Thoughts

The allowable expenses available to UK landlords can substantially reduce a taxable rental profit, but only if they are correctly identified, properly documented, and accurately reported. The capital versus revenue distinction is often where mistakes occur, and the Section 24 restriction on mortgage interest continues to catch out landlords who do not understand its full impact. Taking a systematic approach to expense tracking throughout the year, and working with a qualified tax adviser, is the most effective way to ensure you are paying the right amount of tax on your property income.

This article is intended for general informational purposes only and does not constitute tax, legal, or financial advice. Tax rules are subject to change and their application will depend on your individual circumstances. You should always seek advice from a qualified professional before taking action. Blue Tick Accountants accepts no liability for decisions made on the basis of this content.