Capital Allowances
Capital allowances represent one of the most powerful, yet frequently under-utilised, forms of tax relief available to UK businesses and investors. They enable the cost of qualifying capital expenditure on commercial property, plant and integral features to be written down against taxable profits, delivering substantial cash-flow savings and improving the post-tax return on investment.
Property & Land Tax Relief Advisory - Capital Allowances:
Types of Capital Allowances
The capital allowances regime distinguishes between various categories of qualifying expenditure, each with its own legislative framework and tax treatment. The main categories include:
Plant & Machinery Allowances (P&M):
Covering assets used for the purposes of the trade, from electrical and mechanical installations to specialist equipment, fixtures and fittings.
The challenge lies not merely in identifying obvious items, but in correctly apportioning embedded expenditure within construction or acquisition costs.Integral Features (IFAs):
Defined under s33A CAA 2001, covering systems such as electrical, cold water, heating and air-conditioning installations.
These often form a significant proportion of qualifying expenditure within a commercial building but are frequently overlooked or misclassified by non-specialists.Structures and Buildings Allowances (SBA):
Introduced in 2019 (and enhanced from April 2020), this relief provides a flat-rate writing down allowance for qualifying structural expenditure.
While less generous than P&M allowances, SBAs can materially improve the tax efficiency of large-scale developments, refurbishments and fit-outs when integrated with a broader capital allowances strategy.Enhanced Capital Allowances (ECAs) and Full Expensing:
The introduction of Full Expensing (100% immediate deduction) for qualifying main-pool assets, alongside the continuation of the Annual Investment Allowance (AIA), offers unprecedented flexibility for planning capital investment.
Understanding interaction rules, such as the exclusion of certain leased assets or the apportionment across group entities, is critical to maximising benefit without triggering clawback.
When Can They Be Claimed?
On acquisition of second-hand commercial property
On new builds, extensions or refurbishments
On fit-outs, developments or conversions of commercial properties
Retrospectively on unclaimed historic capital expenditure
Our Approach:
Further Reading & Resources
Get in Touch
If you’ve recently acquired, built, renovated, or fitted out a commercial property, you may be sitting on valuable capital allowances that remain unclaimed.
At Westlock Partners, we work closely with businesses, investors, and property professionals to uncover and maximise these tax relief opportunities, often delivering substantial cash flow benefits with minimal disruption.
To find out how we can help you unlock hidden value from your property expenditure, speak to our team today.