The Chancellor, John Healey, presented his Autumn Budget on 28 October 2026. This is our 'At a glance' summary of the key tax announcements and measures. 

Autumn Budget 2026 NEW 2

Each tab below contains a link to our subscriber guide on the announcements made. These guides contain detailed analysis and commentary, and will continue to be updated over the days following the Budget.

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Capital Allowances

Subscribers, see: Capital Allowances: Autumn Budget 2026

 

Reduction in the main rate Writing Down Allowance (WDA)

It is proposed that from 1 April 2027 for Corporation Tax and 6 April 2027 for Income Tax: 

  • The main rate WDA will be reduced from 14% to 12%.

Increase in the main rate First Year Allowance (FYA)

It is proposed that for expenditure incurred on or after 1 January 2027: 

  • The main rate FYA will increase from 40% to 50%. 

Amending leasing anti-avoidance legislation (s.228G Capital Allowances Act 2001)

It is proposed that for qualifying expenditure incurred from 28 October 2026: 

  • The statutory definition of a finance lease will be expanded when specifically applied to lease and leaseback arrangements.
    • This will restore the policy’s application to the relevant lessees, whether they have a finance lease or a relevant right-of-use lease. 
  • For those arrangements, deductions for rental payments will generally be limited to the finance charge over the life of the leaseback.

Summary of responses to tax treatment of predevelopment costs consultation

  • The government has published a summary of responses to the consultation on the tax treatment of predevelopment costs and will work with stakeholders to explore what improvements can be made to HMRC guidance to provide greater clarity on the application of the existing capital allowances rules.