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At P10 Financial, we specialise in helping property investors, landlords, and developers unlock the full potential of their commercial property investments through tailored capital allowance claims. Our experts guide clients through the complexities of property taxation, ensuring every eligible pound of expenditure is claimed.
Capital allowances let businesses and commercial property owners deduct qualifying capital spending from taxable profits. When you buy, build or refurbish a commercial building, part of the cost usually relates to fixtures such as electrical, heating, ventilation and security systems. The Annual Investment Allowance covers up to £1 million of qualifying spending a year in full; writing down allowances relieve the rest over time. Individuals, companies and partnerships can claim, sometimes retrospectively. P10 Financial identifies, values and documents claims.
Capital allowances are one of the most valuable and often overlooked tax reliefs available to commercial property owners in the UK. Whether you're acquiring, refurbishing, or holding commercial assets, understanding how capital allowances work could significantly reduce your tax bill and improve your overall investment return.
Capital allowances allow you to deduct the cost of certain capital expenditures from your taxable income, reducing the amount of tax your business pays. These allowances apply to qualifying capital expenditure made when buying, building, or improving commercial property.
For example, when purchasing a commercial building, a significant portion of the cost will relate to integral fixtures and fittings. These may include:
Electrical systems
Heating and ventilation systems
Fire safety equipment
Lifts and escalators
Kitchens and bathrooms
Security and alarm systems
Rather than expensing these items all at once, capital allowances enable you to claim tax relief over a period of time. This means substantial tax savings for both individuals and companies holding commercial assets.
When you purchase or refurbish a commercial building, many of the assets within that building qualify for capital allowances. However, these qualifying assets are often not itemised on invoices or in standard accounting records, meaning they require a detailed specialist review to identify and value them.
Claims can be made in two main ways:
1. Annual Investment Allowance (AIA): This allows 100% of qualifying expenditure (up to £1 million per year) to be deducted in the year it is incurred.
2. Writing Down Allowance (WDA): Used for costs exceeding the AIA threshold, WDAs allow businesses to claim a percentage of the remaining value each year: 14% in the main pool, or 6% in the special rate pool, which includes integral features such as electrical, heating and lift systems. The main rate fell from 18% to 14% in April 2026.
Real-World Example: A business purchases a commercial property for £1.5 million. A detailed capital allowances survey identifies that £400,000 of this value relates to qualifying plant and machinery. If claimed correctly, this could reduce taxable profits by up to £400,000 over time and save the business up to £100,000 in Corporation Tax at the 25% main rate, depending on the business’s tax rate and structure.
If you own commercial property in the UK, you may be eligible to make a claim, regardless of whether you’re an individual, company, or partnership. Eligible scenarios include:
Purchase of new or existing commercial property
Renovations and fit-outs
Office-to-residential conversions (for retained commercial use)
Property held for investment or trading purposes
You do not need to be VAT-registered or operating in a specific sector, capital allowances apply to a wide variety of commercial properties and activities.
To qualify, the property must be used for business purposes, and the expenditure must relate to eligible plant and machinery.
Capital allowances can be claimed across a wide range of commercial properties, including but not limited to:
Offices
Warehouses
Retail shops and shopping centres
Hotels and serviced accommodation
Restaurants, pubs, and cafés
Manufacturing and industrial units
Healthcare buildings (GPs, dentists, clinics)
Nurseries and educational buildings
Mixed-use developments
It’s important to note that residential properties typically do not qualify, but areas used commercially within residential developments (such as communal areas in a block of flats) may be partially eligible.
A capital allowance claim is a formal process where a property owner identifies and submits eligible capital expenditure to HMRC to reduce tax liabilities. The claim must be evidence-based, often requiring a specialist surveyor to perform a forensic review of the building and assess the value of qualifying assets.
The process involves:
Reviewing title documents, invoices, and lease structures
Commissioning a capital allowances survey
Preparing a compliant report that supports your tax return
Submitting the claim through your tax return: the Company Tax Return (CT600) for a company, your Self Assessment return as an individual, or the partnership return for a partnership
Liaising with HMRC if any queries arise
Even if you’ve owned your property for several years, you may still be able to make a retrospective claim. In some cases, missed claims can be carried forward indefinitely, preserving valuable tax relief.
At P10 Financial, we bring together accountants, tax specialists, and capital allowance surveyors to provide an end-to-end service that unlocks value and ensures HMRC compliance. Many accountants do not have the expertise to identify or substantiate large claims, leaving money on the table.
We ensure:
All qualifying items are identified and claimed
Claims are prepared with full documentation for HMRC
No disruption to your existing accountant or tax adviser
Compliance with current legislation and best practice
We’ve helped property investors unlock hidden tax savings ranging from £25,000 to £500,000+, depending on the property and investment scale.
Our Capital Allowance Services Include:
Property eligibility assessments
Capital allowances surveys and reports
Historical claim reviews and amendments
Partnership and SPV structure analysis
Support with acquisitions and disposals
Integration with inheritance tax and exit planning
Whether you're buying your first commercial unit or hold a multi-property investment portfolio, our approach is proactive, detailed, and tailored to your tax strategy.
Capital allowances let you deduct the cost of certain capital spending from your taxable income, which reduces the tax your business pays. On commercial property they apply to qualifying spending when you buy, build or improve a building, such as electrical systems, heating and ventilation, fire safety equipment, lifts, kitchens and bathrooms, and security and alarm systems.
Individuals, companies and partnerships that own commercial property in the UK may be able to claim. The property must be used for business purposes and the spending must relate to eligible plant and machinery. You do not need to be VAT-registered or work in a particular sector.
Most types of commercial building can qualify, including offices, warehouses, shops and shopping centres, hotels and serviced accommodation, restaurants, pubs and cafés, industrial units, healthcare and educational buildings, nurseries and mixed-use developments. Residential property usually does not qualify, although commercially used areas within residential developments, such as the communal areas of a block of flats, may partly qualify.
The Annual Investment Allowance gives 100% relief in the year of spending on up to £1 million of qualifying expenditure a year. Spending above that threshold is relieved through writing down allowances, which give relief on a percentage of the remaining value each year, depending on the type of asset.
You may still be able to claim. Even if you have owned your property for several years, a retrospective claim may be possible, and in some cases missed claims can be carried forward indefinitely.
A claim needs evidence, usually from a specialist capital allowances survey, because qualifying items are rarely itemised on invoices or in accounting records. The process involves reviewing title documents, invoices and leases, preparing a report to support your tax return, submitting the claim and dealing with any HMRC queries. P10 Financial brings together accountants, tax specialists and surveyors to do this without disrupting your existing accountant.
