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Could you claim the Small Pool Allowance?

18 December 2025

Learn how WDAs and the small pool allowance work, and discover when each option benefits your business most.

Understanding Writing-Down Allowances

Writing-down allowances (WDAs) are a type of capital allowance. They allow businesses to deduct a percentage of an asset’s value from taxable profits each year. This relief reduces the overall tax burden and encourages investment in plant and machinery.

 

How WDAs Work

To calculate WDAs, you group expenditure into pools. The main pool covers most items and applies an 18% rate. The special rate pool includes long-life assets, integral features, certain thermal insulation, and some cars, applying a 6% rate. After adding new purchases and deducting disposals, WDAs apply to the remaining balance.

Choosing Between WDAs and Other Allowances

In some cases, you may claim more relief using other allowances, such as the Annual Investment Allowance or first-year allowances. These options often provide faster tax relief, so businesses should compare benefits before deciding.

Small Pool Allowance Explained

The small pool allowance offers an alternative to WDAs. If the balance in the main or special rate pool is £1,000 or less, you can claim the entire amount in one year. This approach simplifies calculations and accelerates tax relief. However, it cannot apply to single-asset pools.

When Small Pool Allowance Applies

The allowance is prorated for accounting periods shorter or longer than 12 months. You can choose between claiming WDAs or the small pool allowance, but you cannot claim both for the same pool. This flexibility helps businesses manage tax efficiently.

 

Why This Matters for Businesses

Understanding these rules ensures accurate tax planning. Using the small pool allowance can reduce administrative work and improve cash flow. Therefore, reviewing pool balances regularly is essential for maximising available relief.

Source: HM Revenue & Customs Tue, 16 Dec 2025 00:00:00 +0100

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