08/07/2026
Planning capital expenditure in 26/27?
Capital Allowances: Key Changes from 2026
Businesses investing in plant, machinery, equipment or qualifying fixtures should be aware of important changes to capital allowances taking effect from 2026.
While tax relief remains available, the timing of that relief is changing and this could affect cash flow and tax planning for some businesses.
What is changing?
The main pool writing down allowance rate is reducing from 18% to 14%.
This will apply from:
• 1 April 2026 for companies within the charge to corporation tax; and
• 6 April 2026 for unincorporated businesses, including sole traders and partnerships.
For accounting periods that straddle the relevant date, a hybrid rate will apply.
A new 40% first-year allowance
From 1 January 2026, a new 40% first-year allowance is being introduced for qualifying main rate plant and machinery expenditure. This should provide more upfront relief in certain cases, particularly where full expensing is not available or not claimed.
What stays the same?
Several key allowances remain in place, including:
• Annual Investment Allowance at 100% relief, subject to the £1 million annual limit.
• Full expensing for companies on qualifying new main rate plant and machinery.
• The 50% first-year allowance for qualifying special rate expenditure.
• Special rate pool writing down allowance at 6%.
• Structures and Buildings Allowance, generally at 3% per annum for qualifying non-residential structures and buildings.
Why does this matter?
The reduction in the main pool writing down allowance means some businesses will receive tax relief more slowly, especially where expenditure is not covered by the Annual Investment Allowance, full expensing or another first-year allowance.
Businesses with significant capital expenditure, or historic main pool balances, may wish to review their position and consider the timing of planned investment.
If you are considering investment in plant or machinery, it is worth taking advice to understand which allowances may be available and how the changes could affect your tax relief.