The 2026/27 period brings a number of changes to the capital allowances landscape.
With several changes taking effect from 1 January 2026 and April 2026, including a reduced rate of writing-down allowances (WDA) and the introduction of the new 40% first-year allowance (FYA), businesses face a more complex landscape than in previous years.
Rather than relying on a single relief, investment decisions increasingly require an understanding of how multiple incentives interact. Where and when expenditure is incurred, how assets are classified, and how allowance limits are managed can all influence the overall tax outcome.
Why 2026/27 demands a more strategic approach
For several years, businesses have benefited from generous upfront reliefs such as the annual investment allowance (AIA) and full expensing. While these incentives remain available, the surrounding rules have evolved. From April 2026, the main WDA rate has reduced, making long term relief slower. At the same time, the introduction of the 40% FYA provides a new, intermediate option where immediate 100% relief is not available.
As a result, effective capital investment planning for 2026/27 increasingly depends on how AIA, FYA, WDA, and full expensing are allocated across qualifying expenditure and accounting periods, rather than being considered in isolation.
The annual investment allowance in 2026/27
The AIA remains at £1 million for the 2026/27 tax year, continuing to provide full relief on qualifying expenditure within that limit. However, several practical considerations remain important:
- the £1 million limit must be shared across groups of companies and certain businesses under common control
- once the AIA limit is exhausted, additional qualifying expenditure must be relieved using alternative allowances
- not all asset types qualify for AIA.
Where it applies, AIA is often the simplest and most efficient route to relief. However, its overall value depends on how it is allocated across assets and accounting periods.
Making effective use of the new 40% first year allowance
The 40% FYA, available for qualifying new main-rate expenditure incurred on or after 1 January 2026, introduces a new planning option where AIA is unavailable or has already been fully used, subject to the relevant exclusions.
The FYA provides:
- a 40% deduction in the year of acquisition
- follow on relief for the remaining balance through the usual capital allowance pools.
This allowance can be particularly relevant where:
- AIA limits have been exceeded
- full expensing is not available
- accelerated relief is still preferable to relying entirely on reduced WDAs.
Rather than replacing existing incentives, the FYA adds flexibility, especially where investment levels exceed annual thresholds or where asset eligibility is restricted.
Planning for reduced writing down allowances
From 1 April 2026 for corporation tax and 6 April 2026 for income tax, the main rate WDA has reduced from 18% to 14%, applying to both new and historic pool balances.
For businesses with substantial accumulated capital pools, the long term implications may include:
- slower recovery of tax relief
- increased taxable profits in earlier periods
- greater sensitivity to asset classification and timing.
Where WDAs form a significant part of a business’s capital allowance profile, the reduction reinforces the importance of assessing whether alternative reliefs can be accessed earlier in the investment cycle.
Read more in our insight, Understanding the 2026 writing down allowance cuts.
Sector specific opportunities
Although the framework applies broadly, certain sectors continue to benefit from targeted incentives.
- Electric vehicles and charging infrastructure
The 100% first-year allowances for qualifying zero-emission cars and EV charging points has been extended to 31 March 2027 for corporation tax and 5 April 2027 for income tax, maintaining strong incentives for fleet and infrastructure investment. - Renewable energy and sustainable technologies
Depending on asset type and use, some renewable and energy efficient technologies may qualify for enhanced relief, subject to classification and eligibility rules. - Manufacturing and heavy plant
Capital intensive sectors often rely more heavily on pooled allowances. In these cases, balancing AIA, FYA, and WDA recovery becomes central to long term tax efficiency.
Careful asset identification is essential in all cases, as eligibility depends on detailed statutory definitions rather than commercial descriptions.
Building a strategic investment timeline
Relief outcomes are shaped not only by what is purchased, but also by when and how expenditure is structured.
Key planning considerations include:
- the timing of purchases within the financial year (for example, early year vs year end expenditure)
- aligning accounting year ends to minimise the impact of hybrid allowance rates
- phasing expenditure for multi year projects to optimise allowance availability across periods
- coordinating investment decisions with cash flow and financing plans.
A well structured investment timeline can reduce complexity and improve the overall efficiency of relief claims.
Why taking a proactive approach matters
The 2026/27 rules do not remove capital allowances, but they do make outcomes more dependent on planning. Businesses that take a proactive approach, reviewing allowance availability, asset eligibility, and expenditure timing, are more likely to achieve better tax outcomes over the medium to long-term.
Over time, small improvements in the timing and structure of relief can compound into meaningful cash flow and tax benefits.
How we can help
Capital investment decisions rarely sit neatly within a single tax incentive. Reviewing how AIA, FYA, WDA, and sector specific reliefs interact can often uncover opportunities that are easy to miss in day to day planning.
If you would like to discuss how your capital expenditure strategy fits within the 2026/27 rules, or to review whether your current approach is delivering relief as efficiently as possible, please reach out to your usual Crowe contact.
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