UK Tax Changes 2026: What Every Business Owner Needs to Know
Azar Finance team discussing UK tax planning strategies for 2026
Understand the key UK tax changes coming in 2026, including corporation tax, capital gains tax, R&D relief reforms, and HMRC compliance updates, and how Azar Finance can help your business plan effectively.
UK Tax Changes 2026: What Every Business Owner Needs to Know
The UK tax landscape is undergoing significant changes in 2026, and business owners must stay informed to optimise their financial position. From corporation tax adjustments to capital gains reforms, this guide outlines the key updates and planning opportunities.
Key Corporation Tax Changes for 2026
The 2026 tax year brings important updates to corporation tax that will affect businesses of all sizes across the UK.
Main Rate Adjustments
The corporation tax main rate remains at 25% for companies with profits over £250,000. However, several reliefs and allowances have been restructured:
Small profits rate continues at 19% for companies with profits under £50,000
Marginal relief applies to profits between £50,000 and £250,000, smoothing the effective tax rate
Associated company rules have been tightened, affecting how thresholds are calculated when companies are under common control
Enhanced Capital Allowances
The full expensing regime for qualifying plant and machinery investments has been made permanent, allowing businesses to deduct 100% of the cost from taxable profits in the year of purchase. This is a major opportunity for businesses planning capital investments, particularly in equipment, technology, and operational assets.
Capital Gains Tax Updates
Business owners disposing of assets in 2026 need to be aware of several changes:
Business Asset Disposal Relief (BADR) (formerly Entrepreneurs' Relief) lifetime limit remains at £1 million
The annual exempt amount for individuals has been reduced to £3,000, increasing the likelihood of CGT being due on disposals
Reporting deadlines for UK residential property disposals remain at 60 days from completion, with penalties for late reporting and payment
R&D Tax Relief Reforms
The merged R&D scheme introduced in 2024 continues to evolve in 2026:
An enhanced rate of 20% above-the-line credit is available for qualifying R&D expenditure
Subcontractor rules have been clarified, particularly for overseas R&D activities, tightening what can be claimed where work is performed outside the UK
Digital submission requirements are now mandatory for all claims, including supporting documentation and technical narratives
HMRC Compliance and Reporting
HMRC has increased its focus on compliance, with new and expanded requirements including:
Making Tax Digital (MTD) expansion to all businesses, requiring compatible software and more frequent digital reporting
Enhanced disclosure requirements for tax planning arrangements, with greater scrutiny of aggressive or complex structures
Increased penalties for late filing and payment, as well as for inaccurate returns and careless or deliberate errors
Strategic Tax Planning Opportunities
To maximise tax efficiency in 2026, business owners should consider:
Reviewing company structure to ensure it remains optimal under the current corporation tax and associated company rules.
Accelerating capital investments to benefit from permanent full expensing where cash flow allows.
Documenting R&D activities thoroughly, including project logs, technical reports, and cost breakdowns to support claims.
Considering pension contributions for directors as a tax-efficient way to extract value and reduce corporation tax liability.
Planning dividend timing carefully around tax year boundaries to manage personal tax exposure and cash flow.
How Azar Finance Can Help
Navigating these changes requires expert guidance. Azar Finance’s team of chartered accountants and tax specialists can:
Review your current structure and tax position
Model the impact of 2026 rule changes on your business
Identify opportunities for full expensing and R&D relief
Ensure compliance with MTD and enhanced HMRC reporting
Build a tailored tax strategy aligned with your growth plans
Contact Azar Finance today for a free consultation on your 2026 tax planning needs and to ensure your business is fully prepared for the new fiscal environment.
Plan Your 2026 Tax Strategy with Azar Finance
Book a free consultation with Azar Finance to review how the 2026 UK tax changes will affect your business, optimise your corporation tax, R&D claims, and capital investment strategy, and ensure full compliance with HMRC.
