Capital Allowances for Dental Practices and Veterinary Surgeries: What Qualifies

Capital allowances for dental practices and veterinary surgeries cover the qualifying capital spend inside a working clinical premises that can be deducted from taxable profit: the chair and delivery unit, imaging and sterilisation equipment, surgery cabinetry and lighting, theatre and anaesthetic kit, the ventilation and decontamination plant behind the wall, and the building services running through it.

Practice spend splits three ways for tax:

• Plant and machinery bought for the practice, relieved in full in the year or written down at the main rate
• Fixtures already embedded in the premises, including the building services that sit in the slower special rate pool
• The structure itself, which attracts the capital allowances on commercial property available under the structures and buildings allowance

This guide walks a clinical practice area by area, states the allowance and rate attaching to each item, and covers capital allowances on dental equipment alongside capital allowances for veterinary practices, where the two diverge.

Why a Practice Holds More Qualifying Spend Than It Looks

A practice owner has usually claimed on the chair, the scanner and the autoclave. Those are the invoices with the practice's name on them and a clear equipment description. The claim then stops.

What is left unexamined is the fit-out. Surgery-standard lighting panels, double power sockets positioned for the chair and the imaging head, single-radiator heating and electric extract fans are all installed as part of building works, arrive on a builder's invoice as a lump sum, and read as part of the premises rather than as plant.

DJH reports a dental practice bought for £425,000 in 2022 where a specialist survey identified £35,511 of unclaimed allowances, including exactly those four fit-out items, after the vendor's section 198 statement was questioned rather than accepted (DJH, "How we found £35k in overlooked capital allowances on a dental practice purchase", 17 February 2026). That is the firm's own case study of one transaction, not a benchmark, but it shows where the missed spend sits: in the walls and ceilings, not on the equipment schedule.

The Surgery Itself: Chairs, Imaging and Sterilisation

The surgery is the densest room in the building. Whatever qualifies in one surgery qualifies in every surgery, which is what makes an itemised list worth the effort in a three or four surgery practice.

Item in the surgery	What it is for tax	Pool
Dental chair and delivery unit	Plant	Main pool
Intraoral X-ray head, OPG or CBCT scanner	Plant	Main pool
Compressor and suction plant	Plant	Main pool
Autoclave and washer-disinfector	Plant	Main pool
Surgery cabinetry and worktops	Fixture, plant	Main pool
Surgery-standard lighting panels	Fixture, plant	Main pool
Double sockets positioned for equipment	Part of the electrical installation	Special rate pool
Electric extract fan serving the surgery	Integral feature	Special rate pool
Space heating and hot and cold water serving the room	Integral feature	Special rate pool

The equipment costs are substantial enough that the allowance route matters. Dental Accountants Harrow gives typical ranges of £15,000 to £25,000 for a dental chair, £80,000 to £120,000 for a CAD/CAM system and £100,000 to £150,000 for a CBCT scanner, all treated as main-rate plant (Dental Accountants Harrow, "Capital Allowances for High-Tech Dental Equipment", accessed 13 August 2026). Those are that firm's own cost ranges rather than a market survey, but they set the scale: a single equipment year in a growing practice can absorb a large part of the annual investment allowance on its own.

Surgery cabinetry is the item principals most often assume belongs to the building. It does not. Cabinetry installed to serve the trade of treating patients functions as plant, and so do the worktops and the integrated sinks fitted with it.

A practice that fitted out leasehold premises claims on the fit-out it paid for; the landlord's building sits elsewhere. That boundary is covered in Can You Claim Capital Allowances on a Leased or Rented Property?

The Veterinary Side: Consulting Rooms, Theatre and Diagnostics

A veterinary practice runs the same three-way split across a wider set of rooms, because it holds a theatre, a diagnostic suite and overnight accommodation the dental practice does not.

Main pool plant in a veterinary practice:

• Examination and consulting tables
• Surgical suites, operating tables and theatre lighting
• Anaesthetic machines, ventilators and monitoring equipment
• X-ray and ultrasound machines
• Oxygen tanks, regulators and piped medical gas outlets
• Laboratory and in-house testing equipment
• Animal welfare and handling equipment

That item list follows BSE Group's veterinary schedule (BSE Group, "Capital Allowances for: Veterinary practices", accessed 13 August 2026).

The theatre repeats the surgery pattern. The table, the lighting and the gas and monitoring equipment are plant. The ventilation serving the theatre, the electrical installation feeding it and the hot and cold water supply are integral features at the slower rate.

Overnight and recovery accommodation is where a veterinary practice starts to resemble a residential care setting. It is not one, and the treatment differs. Residential bedrooms, wet rooms and the regulatory fit-out that drives them are covered in Capital Allowances for Care Homes: Claiming on Bedrooms, Bathrooms and Plant.

Kennelling, Recovery and Isolation Areas

Capital allowances on dog kennels are not automatic, and the reason is specific.

HMRC's List C sets out expenditure unaffected by the buildings and structures exclusion. Item 33 on that list is fixed zoo cages, and the manual is explicit that the list stops there: "List C does not operate by analogy. For example, item 33 which refers to fixed zoo cages does not apply to any other form of animal shelter such as kennels or stables" (GOV.UK, HMRC Capital Allowances Manual CA22030, "Buildings & structures: Expenditure unaffected by legislation", last updated 8 July 2025). Appearing on List C is not qualification in itself either, because an item "has to pass the normal tests for being plant in common law before allowances are due".

The practical division for a kennel, recovery or isolation block:

• The block itself sits with the building shell, and falls to the structures and buildings allowance where the conditions are met
• The ventilation, hot and cold water and electrical systems serving it are integral features in the special rate pool
• The cages, runs, gates, heat pads and loose equipment inside it are plant in the main pool

An isolation ward makes the point clearly. Its separate extract ventilation is a building service at 6%; the caging and the equipment inside it are plant.

Behind the Surgery: Ventilation and Decontamination Plant

A capital allowances ventilation system claim is where clinical premises differ most from an ordinary office. A decontamination room brought up to standard carries mechanical extract, dedicated water supply, drainage, and a washer-disinfector and autoclave line that has to be commissioned.

The equipment splits from the services that feed it:

• Autoclaves, washer-disinfectors and ultrasonic baths are plant, main pool
• The mechanical extract and air-handling serving the decontamination room is an integral feature, special rate pool
• The dedicated hot and cold water installation is an integral feature, special rate pool
• Reverse-osmosis units and water treatment plant serving the equipment are plant, main pool

That special rate treatment is the same for the air conditioning in the surgeries and the general lighting circuit. HMRC's integral features list covers lifts, escalators and moving walkways, space and water heating systems, air-conditioning and air cooling systems, hot and cold water systems but not toilet and kitchen facilities, electrical systems including lighting, and external solar shading (GOV.UK, "Work out your writing down allowances: Rates and pools", accessed 13 August 2026). The borderline cases are covered in What Counts as an Integral Feature for Capital Allowances?

Practice IT, Imaging Software and Reception Systems

Capital allowances for IT equipment in a practice cover more than the workstations. The practice management server, the imaging workstation, the network switches and the structured data cabling installed through the building are all plant in the main pool.

Reception and the frontage carry their own claimable items:

• Reception desk joinery and fitted admin furniture
• Waiting-area seating and fitted units
• Internal and external signage, including illuminated practice signage
• External lighting and CCTV
• Access control and door-entry systems

Capital allowances signage is a small line on the invoice and a routinely missed one, because it is priced with the shopfitting rather than the equipment.

Practice management software bought outright is capital expenditure, and a company may elect to treat computer software as plant and machinery rather than as an intangible fixed asset. A monthly or annual subscription is not capital spend at all: it is a revenue cost, deducted in full against profit in the year.

The general categorisation of an office fit-out, Cat A and Cat B, is covered in Office Fit-Out Capital Allowances: What to Claim on a Cat A and Cat B Fit-Out. This section covers only the practice's own reception and admin spend.

Which Pool Each Practice Cost Falls Into

The capital allowances special rate pool is where most of a practice's building spend lands, and it is the slowest of the three routes to relief.

Route	Rate	Typical practice items
Main pool	14% from April 2026 (18% before)	Chairs, imaging, autoclaves, cabinetry, theatre equipment, IT, signage, cages and runs
Special rate pool	6%	Ventilation and air conditioning, electrical and lighting installation, hot and cold water, space heating
Structures and buildings allowance	3% straight line	The shell, the extension, the kennel block itself

The same pooling logic runs across every sector guide in this series, applied to different plant. The production equivalent is covered in Capital Allowances for Factories and Manufacturing Units.

Irrecoverable VAT Is Part of the Qualifying Cost

A registered dentist's health services are exempt from VAT (HMRC VAT Health manual VATHLT2450, accessed 13 August 2026), which means a dental practice generally cannot recover the VAT on its equipment and fit-out.

Where VAT cannot be recovered, capital expenditure on assets ranking for capital allowances is inclusive of that irrecoverable VAT (HMRC Business Income Manual BIM31535, accessed 13 August 2026). A dental practice therefore builds its claim on the VAT-inclusive invoice totals, not the net figures. On a £200,000 fit-out that is a difference of £40,000 of qualifying spend at the 20% rate. A veterinary practice, making taxable supplies, claims on the net figures instead.

Using the Annual Investment Allowance in a Heavy Equipment Year

The capital allowances AIA limit is £1 million of qualifying plant and machinery in the accounting period, and it is open to sole traders, partnerships and companies alike (GOV.UK, "Claim capital allowances: Annual investment allowance", accessed 13 August 2026). It gives 100% relief in the year of spend.

Two restrictions matter to a practice. The allowance is reduced pro rata for an accounting period shorter than twelve months, so a practice that changes its year end in a refit year cuts its own ceiling. And it is not available on cars. Vehicle and leased-asset treatment is covered in Cars, Vans and Leased Assets: Which Capital Allowances Are Available?

For most practices the £1 million ceiling is not the binding constraint. A surgery refit plus a scanner in the same year might reach £250,000. The value of the allowance is the timing: the full deduction lands in the year of the spend rather than being written down at 14% over a decade.

Full Expensing: What Changes If the Practice Is a Company

Capital allowances full expensing gives 100% relief on main-rate plant and machinery bought from 1 April 2023, with a 50% first-year allowance for special-rate spend such as the ventilation and electrical installation (GOV.UK, "Claim capital allowances: Full expensing", accessed 13 August 2026). The asset must be new, unused, and not a car.

The restrictions decide whether it is relevant. Full expensing is for companies only, so a practice trading as a partnership or as a sole trader cannot use it and relies on the annual investment allowance instead. A second-hand chair or a refurbished autoclave falls outside it on the "new and unused" test, though it still qualifies for the annual investment allowance.

Since 1 January 2026 a third option sits alongside both. A 40% first-year allowance applies to qualifying main-rate plant and machinery where the annual investment allowance or an existing first-year allowance is unavailable or not preferred, and unlike full expensing it is open to unincorporated businesses (GOV.UK, "Capital allowances: new first-year allowance and reducing main rate writing-down allowances", 26 November 2025). Second-hand assets and cars are excluded.

Writing Down Allowance Rates and the April 2026 Change

Where spend is not relieved in full in the year, it enters a pool and is written down annually. The capital allowances WDA rates changed this year, and most practice guidance online still quotes the old figure.

The main pool rate fell from 18% to 14% on 1 April 2026 for Corporation Tax and 6 April 2026 for Income Tax. The special rate pool stays at 6% (GOV.UK, "Work out your writing down allowances: Rates and pools", accessed 13 August 2026). An accounting period straddling that date applies a hybrid rate based on the proportion of the period falling either side of it.

The change makes the first-year routes more valuable, not less. A £120,000 CBCT scanner relieved in full under the annual investment allowance produces a £120,000 deduction in year one. The same scanner left in the main pool produces £16,800 in year one at 14%, against £21,600 at the old rate, and the balance follows over the following decade.

Spend on the Building Shell and Extensions

Capital allowances structures and buildings cover the part of a practice that is not plant: the walls, floors, roof, the extension, the kennel block, and the construction costs that form the fabric.

The allowance is 3% a year on qualifying construction costs on a straight-line basis, over an allowance period of 33 and one third years (GOV.UK, "Claiming capital allowances for structures and buildings", last updated 3 September 2020). Three conditions apply: all construction contracts must have been entered into on or after 29 October 2018, the structure must be used for a qualifying activity and must not have been used as a residence, and an allowance statement is required to support the claim and to pass it to a future owner.

Spend claimed as plant is not also claimed under the structures and buildings allowance. The two are mutually exclusive on the same cost, which is why an itemised construction invoice is worth more than a lump sum.

A practice bought with fixtures already installed carries a further question, and it has to be settled before completion rather than afterwards. Whether the seller pooled the fixtures, and what value is fixed between the parties, decides what the buyer can claim. Those mechanics are covered in Capital Allowances When Buying a Commercial Property: What to Agree Before Completion.

What to Do Next

Walk the premises before speaking to an adviser. List what exists in one surgery, one consulting room, the theatre, the decontamination room, the kennel block, reception and the plant room, with the year each item was installed and the invoice it appears on. What repeats across rooms multiplies the claim.

An estimate is not entitlement. An estimator applies a percentage to a figure typed in; it cannot know whether the fixtures were pooled by a previous owner, whether a value was fixed on the last sale, or whether they belong to a landlord. The number is a reason to investigate, not a claim.

Run the premises through the capital allowances on commercial property estimator to put a figure against the practice before approaching an adviser.