Allowable Expenses for Rental Income

At Towerstone Accountants we provide specialist property accountant services for landlords property investors and individuals earning rental income across the UK. This article has been written to explain allowable expenses for rental income in clear practical terms so you can act with confidence. Our aim is to help you understand what applies to your situation reduce the risk of errors and know when it is worth getting professional support.

Understanding allowable expenses for rental income is one of the most important things a landlord can get right. It directly affects how much tax you pay each year and getting it wrong can quietly cost you thousands over time. In my experience, many landlords either under claim because they are cautious or over claim because they misunderstand what is allowed. Both cause problems.

In this guide I will explain clearly which expenses you can deduct from rental income in the UK, which ones you cannot, how the rules differ depending on how the property is owned and the common mistakes landlords make. Everything here reflects current UK practice as applied by HM Revenue & Customs and guidance published on GOV.UK, combined with real world experience preparing rental accounts.

What allowable expenses actually mean

Allowable expenses are costs that you can deduct from your rental income before calculating your taxable profit.

In simple terms:

Rental income

Minus allowable expenses

Equals taxable rental profit

You pay tax on the profit not the rent received.

The key rule HMRC applies is that expenses must be wholly and exclusively for the purpose of renting out the property. If a cost is partly personal and partly rental, only the rental portion is usually allowable.

Who these rules apply to

The rules in this guide apply to:

Individual landlords

Joint property owners

Most standard buy to let properties

There are differences for:

Furnished holiday lets

Limited companies

Commercial property

I will flag key differences where relevant.

General running costs you can usually claim

Most landlords incur ongoing costs to keep a property let. These are the most commonly claimed allowable expenses.

Letting agent fees

If you use a letting agent, their fees are fully allowable.

This includes:

Tenant find fees

Management fees

Renewal fees

Rent collection charges

If the fee relates to managing the rental property, it is normally deductible in full.

Maintenance and repairs

Repairs and maintenance are allowable as long as they are repairs, not improvements.

Allowable repairs include:

Fixing broken boilers

Repairing leaks

Replacing damaged roof tiles

Fixing windows and doors

Repainting between tenants

Plumbing and electrical repairs

The work must restore the property to its original condition, not upgrade it.

Improvements vs repairs

This is one of the most important distinctions.

A repair puts something back to how it was.

An improvement makes it better than it was before.

For example:

Replacing a broken single glazed window with modern double glazing is usually treated as a repair

Installing a brand new extension is an improvement and not immediately deductible

Improvements are usually capital costs and may be relevant for Capital Gains Tax later but not deductible against rental income.

Insurance

Insurance premiums relating to the rental property are allowable.

This includes:

Buildings insurance

Landlord insurance

Contents insurance for furnished properties

Public liability insurance

Only insurance relating to the rental activity can be claimed.

Council tax and utilities

If you pay council tax or utilities during periods when the property is empty or between tenants, these costs are usually allowable.

This includes:

Council tax

Gas and electricity

Water charges

Once tenants move in and pay these themselves, you cannot claim them.

Safety and compliance costs

Legal compliance costs are allowable.

This includes:

Gas safety certificates

Electrical safety reports

Fire safety checks

Legionella risk assessments

These are necessary to legally rent the property and are therefore deductible.

Professional and administrative costs

Many landlords incur professional fees. Most of these are allowable.

Accountancy fees

Fees paid to an accountant for preparing rental accounts or tax returns are allowable.

If the accountant’s work covers both rental and non rental matters, only the rental portion can be claimed.

Legal fees

Legal fees are allowable if they relate to the day to day running of the rental business.

Allowable legal costs include:

Tenancy agreements

Eviction proceedings

Debt recovery from tenants

Legal fees relating to buying or selling the property are capital costs and not deductible against rental income.

Advertising costs

Costs of advertising for tenants are allowable.

This includes:

Online listings

Letting portals

Local adverts

As long as the cost relates to finding tenants, it can be deducted.

Stationery phone and admin costs

Reasonable administrative costs are allowable.

This can include:

Phone calls to tenants or agents

Postage

Printing

Small office costs related to the rental

If you use a phone or computer partly for personal use, only the rental proportion is allowable.

Travel and mileage expenses

Landlords often travel to and from their properties.

Mileage and travel

You can usually claim:

Mileage for visiting the property

Travel to meet agents or tradespeople

Travel to collect rent or deal with issues

Mileage can be claimed using HMRC approved rates or actual costs but not both.

Travel must be wholly and exclusively for rental purposes.

What you cannot claim

You cannot claim:

Travel from home to work if the property is not part of your trade

Travel that is mainly personal

Normal commuting costs

HMRC scrutinises travel claims closely so records are important.

Replacement of domestic items

The replacement of domestic items relief applies to furnished and part furnished properties.

This allows you to deduct the cost of replacing certain items provided to tenants.

Allowable items include:

Beds and mattresses

Sofas and chairs

Tables and wardrobes

Carpets and curtains

White goods such as fridges and washing machines

You can usually deduct the cost of replacing the item but not the initial cost when the property was first furnished.

Finance costs and mortgage interest

This area causes the most confusion and mistakes.

Mortgage interest for individual landlords

For individual landlords:

Mortgage interest is not deducted from rental income

Instead you receive a basic rate tax credit

This applies regardless of your tax band.

This means:

Rental profit is calculated before interest

A tax reduction is applied afterwards

Many landlords still incorrectly deduct interest which leads to errors.

Other finance costs

Arrangement fees and loan interest follow the same treatment as mortgage interest for individuals.

They are not deducted from profit but receive tax credit relief.

Finance costs for limited companies

If the property is owned by a limited company:

Mortgage interest is fully deductible

Finance costs reduce taxable profit directly

This is one of the reasons company ownership can be attractive for some landlords.

Costs you cannot claim against rental income

Knowing what you cannot claim is just as important.

Capital costs

You cannot deduct:

Purchase price of the property

Stamp Duty

Legal fees for buying

Major improvements or extensions

These are capital costs and may only be relevant for Capital Gains Tax when you sell.

Personal expenses

You cannot deduct:

Your own time

Personal phone bills

Clothing

Meals

Household costs unrelated to the rental

Expenses must relate directly to the rental activity.

Initial furnishing costs

You cannot deduct:

The initial cost of furnishing a property

Only replacement items are allowable under the replacement of domestic items rules.

Jointly owned properties

If you own a rental property jointly:

Income and expenses are usually split according to ownership

Married couples often default to a 50 50 split

Different splits may require formal declarations

Each owner claims their share of allowable expenses on their own tax return.

Furnished holiday lets

Furnished holiday lets have different rules.

They can usually:

Deduct mortgage interest in full

Claim capital allowances on furniture and equipment

These rules are more generous but require the property to meet strict letting conditions.

Record keeping requirements

Good records are essential.

You should keep:

Invoices and receipts

Bank statements

Mileage logs

Agent statements

Records must usually be kept for at least six years.

Poor records are one of the most common causes of HMRC enquiries.

Common mistakes landlords make

From experience, these mistakes come up repeatedly:

Claiming improvements as repairs

Deducting mortgage interest incorrectly

Forgetting empty period costs

Not apportioning mixed use expenses

Missing small but valid expenses

Keeping poor records

Most of these are avoidable with basic understanding.

A simple way to sanity check an expense

A helpful question to ask is:

Would I still incur this cost if I did not rent out the property?

If the answer is no, it is more likely to be allowable.

If the answer is yes, it is more likely to be personal.

This is not perfect but it is a good starting point.

When professional advice is worth it

Advice is particularly valuable if:

You have multiple properties

You are a higher rate taxpayer

You have mixed personal and rental use

You are unsure about repairs vs improvements

You have recently changed ownership structure

Small errors repeated over years can become expensive.

Final thoughts

Allowable expenses for rental income are not about being aggressive or creative. They are about applying the rules correctly so you pay the right amount of tax and no more.

Most landlords lose money not through penalties but through under claiming legitimate costs or misunderstanding key areas such as finance costs. With good records and a clear understanding of what is allowed, rental tax becomes far more manageable.

If in doubt, it is always better to ask and get clarity than to guess. Rental income tax rewards accuracy and consistency far more than risk taking.

If you want to keep going you may also find our guidance on how much tax on rental income and do you pay tax on rental income useful. For a broader overview of rental income rules reporting requirements and ongoing responsibilities you can explore our rental income hub which brings together our property tax guidance in one place.