If you rent out property in the UK, you only pay tax on your profit, not your gross rental income. Allowable expenses are the costs you can deduct from that income before HMRC calculates what you owe. Get them right and you pay less tax, legally. Miss them and you overpay.
This guide covers the main categories of tax deductible expenses for buy-to-let landlords, explains the repair versus improvement distinction that trips up most people, and shows how to claim correctly on your tax return.
What are allowable expenses for landlords in the UK?
Allowable expenses for landlords are the revenue costs of running your rental property that HMRC allows you to subtract from rental income. What remains after that deduction is your taxable rental profit.
So if your property brings in £15,000 a year in rent and you have £4,000 of qualifying expenses, you are taxed on £11,000, not £15,000.
Why allowable expenses matter for buy-to-let landlords
The difference between claiming accurately and claiming nothing can be hundreds or thousands of pounds each year. The goal is not artificial tax avoidance. It is simply making sure you do not pay tax on money you have already spent running the property business.
Allowable expenses vs capital expenditure
This is the single most important distinction in landlord taxation.
Revenue expenses are the day-to-day costs of maintaining and running the property as it currently stands. You can usually deduct these in the tax year they arise.
Capital expenditure is money spent on acquiring the property, improving it, or adding something new. You cannot deduct these costs from rental income in the same way. They may instead affect Capital Gains Tax when you eventually sell.
| Type | Examples | Tax treatment |
|---|---|---|
| Revenue, allowable | Repairs, agent fees, insurance, utilities | Deduct from rental income in the same year |
| Capital, not allowable | Purchase price, extensions, conversions | Added to cost base for CGT purposes |
How HMRC treats rental expenses
HMRC’s core rule is that an expense must be incurred wholly and exclusively for the rental business. Any private element must be apportioned or excluded.
Important: HMRC can ask to see evidence for any expense you claim. Keep invoices, receipts, statements and supporting notes for everything material.
Which landlord expenses can usually be claimed?
The categories below cover the main costs landlords can usually offset against tax.
Repairs and maintenance
Repairs are one of the most valuable deductions available. The key question is whether the work restores something to its previous condition rather than improving it.
Allowable repair examples include:
- Fixing a leaking roof
- Repairing a broken boiler or replacing it with an equivalent model
- Repainting internal walls between tenancies
- Repairing cracked plaster, broken windows, or faulty guttering
- Pest control treatments
Did you know? Routine maintenance such as annual boiler servicing and gas safety checks usually counts as an allowable expense even if nothing has actually broken.
Replacement of domestic items
Landlords of residential properties can usually claim Replacement Domestic Items Relief when replacing:
- Beds, sofas, wardrobes, and other furniture
- White goods and appliances
- Curtains, carpets, and similar household items
The relief is for replacement, not initial furnishing, and it is based on a like-for-like equivalent rather than an upgrade.
Letting agent and management fees
Typical deductible costs include:
- Tenant-finding fees
- Management fees
- Renewal fees
- Inventory and check-in or check-out costs
Accountancy, bookkeeping and tax return fees
If you pay an accountant or use software specifically for the rental business, those costs are generally allowable. Advice linked to buying or selling a property is different and is usually capital in nature.
Insurance costs
Allowable insurance costs usually include:
- Landlord buildings insurance
- Contents insurance
- Rent guarantee insurance
- Liability insurance linked to the rental business
Utility bills, council tax and ground rent
Where the landlord is responsible for these costs, they are usually deductible. If the tenant pays them directly, you cannot claim them.
Service charges and estate charges
For leasehold properties, service charges and related estate management costs are generally allowable.
Advertising and marketing costs
The cost of finding tenants is fully deductible, including portal listings, photography, referencing, and related advertising.
Administrative and office costs
Stationery, postage, landlord software, and similar admin costs used for the rental business can usually be claimed. Mixed personal and business costs need apportionment.
Travel and vehicle costs
You can usually claim travel costs for journeys wholly and exclusively linked to the rental business, such as inspections, contractor meetings or property visits.
HMRC generally accepts actual travel costs or mileage at the approved rate, provided you keep a proper log.
Wages and contractor payments
If you employ cleaners, gardeners, caretakers or contractors for qualifying rental work, those costs are usually allowable.
Legal and professional fees
Legal fees directly related to the running of the tenancy business are often deductible, such as:
- Rent arrears recovery
- Tenancy disputes
- Certain tenancy-related notices and enforcement work
Legal fees for buying or selling a property are capital costs instead.
Attention: Legal fees connected with eviction proceedings are often allowable. Legal work connected with property acquisition or disposal is not treated the same way.
Training, memberships and subscriptions
Landlord training and membership fees for relevant bodies such as the NRLA can often be allowable where they clearly relate to the rental business.
Mortgage interest and other finance costs
Finance costs are treated differently from most other expenses for individual residential landlords.
Can you deduct mortgage interest on a rental property?
Individual landlords can no longer deduct mortgage interest directly from rental income in the normal way. Instead, they usually receive a 20 percent tax credit on qualifying finance costs.
Finance cost relief for individual landlords
Your rental profit is calculated without deducting finance costs. The 20 percent tax reduction is then applied to the qualifying finance costs at the tax calculation stage.
| Taxpayer | Old system | Current system |
|---|---|---|
| Basic rate | 20 percent effective relief | 20 percent tax credit, broadly similar result |
| Higher rate | 40 percent effective relief | 20 percent tax credit, less beneficial |
| Additional rate | 45 percent effective relief | 20 percent tax credit, less beneficial |
What counts as a finance cost
Finance costs can include:
- Mortgage interest
- Certain loan arrangement fees
- Interest on qualifying borrowing linked to the rental business
The capital repayment part of a mortgage is never deductible.
When finance costs are not fully deductible
The 20 percent tax credit is only useful to the extent you have enough Income Tax liability for it to relieve. Mixed personal borrowing and rental borrowing also needs to be split correctly.
Companies are not subject to this same restriction in the same way.
What costs landlords cannot claim?
Knowing what to leave off your return matters just as much as knowing what to include.
Property purchase costs and stamp duty
The purchase price, Stamp Duty Land Tax, conveyancing fees, and survey costs on acquisition are not allowable revenue expenses. They are capital costs.
Capital improvements and refurbishments
Extensions, loft conversions, conservatories, and major upgrades are capital improvements rather than normal deductible expenses.
Private or personal expenses
Any cost with a private element must be apportioned or excluded entirely.
Fines, penalties and non-rental costs
HMRC penalties, late fees and unrelated personal costs are not deductible.
Repairs, improvements and mixed expenditure
This is where many landlord tax mistakes happen.
How to tell a repair from an improvement
A repair restores the property to its previous condition. An improvement makes it better than it was before.
Replacing a worn carpet with a similar carpet is usually a repair. Adding a new bathroom where none existed before is an improvement.
Claiming partial expenses
If one project contains both repair and improvement work, you may be able to split the invoice and claim only the repair portion. Itemised invoices matter here.
The “new for old” rule and betterment
HMRC generally accepts that a modern equivalent replacement may be slightly better than the original because materials and technology improve over time. That alone does not automatically make it capital.
Pre-letting work and initial renovation costs
Work done before a property is first let is often capital rather than revenue, especially if it puts the property into a lettable state for the first time.
Property income allowance and other reliefs
Property income allowance
If your gross rental income is no more than £1,000 in a tax year, the property income allowance may mean there is nothing to declare. If income is above that level, you can sometimes choose the £1,000 allowance instead of actual expenses.
Replacement Domestic Items Relief
This relief allows replacement costs for qualifying domestic items in residential property lets, but not the initial furnishing cost.
Capital allowances and furnished holiday lets
Standard residential lettings do not usually qualify for capital allowances in the same way that the old FHL regime once did.
Important: The special tax advantages of furnished holiday lets, including capital allowance treatment, were abolished from April 2025. If you still operate a former holiday let, review the current position carefully.
How to calculate your tax deduction
Calculating rental profit step by step
The basic formula is:
Rental income minus allowable expenses equals taxable profit
Finance cost tax relief is then dealt with separately for individual landlords.
Apportioning costs between rental and private use
Where an expense is partly personal and partly business, only the rental share can be claimed. Keep a record of how you apportioned it.
Joint ownership and spouse transfers
Where property is jointly owned, income and expenses follow the ownership split, subject to the usual married-couple default rules and any valid Form 17 position.
Cash basis or traditional accounting
Many landlords below the threshold can use the cash basis. Others may prefer or need accruals accounting. The method affects when income and expenses are recognised.
How to claim allowable expenses
Self Assessment reporting
Rental income and expenses are reported on the UK property pages of the Self Assessment return. Finance costs go in their own area because of the separate tax credit treatment.
If your qualifying income is above the MTD threshold, digital record-keeping and quarterly reporting now apply.
What records landlords should keep
Keep:
- Invoices and receipts
- Bank statements
- Mileage logs
- Insurance documents
- Mortgage statements showing interest
Did you know? Digital record-keeping tools can automatically categorise transactions and store receipts, which becomes especially useful once MTD for Income Tax applies.
How long to keep rental records
Keep records long enough to support HMRC enquiries. In practice, many landlords keep them for around six years as a safer working rule.
Common mistakes landlords make
Claiming capital costs as repairs
This is the most common and most expensive error.
Forgetting to apportion mixed costs
Where an expense has both business and private use, claiming 100 percent creates avoidable risk.
Missing small but legitimate expenses
Commonly overlooked costs include:
- Professional memberships
- Postage and stationery
- Bank charges on a rental account
- Agent renewal fees
- Safety certificates
Poor record keeping
An accurate claim with weak records can still become a problem in an HMRC enquiry.
Allowable expenses checklist for UK landlords
| Category | Allowable? | Notes |
|---|---|---|
| Repairs and like-for-like replacements | Yes | Must restore, not improve |
| Replacement of domestic items | Yes | Replacement only |
| Letting agent and management fees | Yes | Standard agent costs |
| Accountancy and bookkeeping fees | Yes | Rental-related only |
| Buildings and landlord insurance | Yes | Includes common landlord cover |
| Utility bills paid by landlord | Yes | Including void periods where relevant |
| Ground rent and service charges | Yes | Usually for leasehold properties |
| Advertising and tenant-finding costs | Yes | Standard letting costs |
| Travel to the property | Yes | Records required |
| Contractor and staff payments | Yes | For qualifying work |
| Legal fees, tenancy related | Yes | Not purchase or sale costs |
| Training and landlord memberships | Usually | Must relate to the business |
| Mortgage interest | Partial | Tax credit, not full direct deduction |
| Property purchase price | No | Capital cost |
| Stamp Duty on purchase | No | Capital cost |
| Capital improvements | No | Often relevant for CGT later |
| Personal expenses | No | Unless apportioned |
| Fines and penalties | No | Never deductible |
This article is for general information only and does not constitute tax or financial advice. For guidance specific to your circumstances, consult a qualified accountant or tax adviser.
