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Claritax News

Agent Update – issue 143

22 May 2026

HMRC have published (21 May 2026) their Agent Update 143, with the following content:

Technical updates and reminders

Developments and changes to legislation and allowances relating to UK tax including:

Tax

  • Support during the Iran crisis
  • Voluntary National Insurance contributions abroad
  • Reminder — file monthly Construction Industry Scheme (CIS) returns or face late-filing penalties
  • Mandatory online filing of amended Company Tax returns from 1 April 2027
  • Remote Gaming Duty and Bingo Duty
  • Capital Gains Tax — Employee Ownership Trust relief reduction
  • Support customers to check and apply for Vaping Products Duty and Vaping Duty Stamps Scheme approval
  • Updates to Automatic Exchange of Information (AEOI)
  • Research and Development (R&D) tax relief update
  • New guidance on the tax treatment of ecosystem service payments

Borders and Trade

  • Post-clearance amendments process — an update
  • Carbon Border Adjustment Mechanism (CBAM)

Making Tax Digital

  • Making Tax Digital for Income Tax — signing up and what to do next

HMRC Agent Services

  • Specials and exclusions update for individuals, partnerships and trusts/estates 
  • Look twice to spot bad tax advice
  • Why filing tax returns early works for you and your clients
  • VAT return submission deadlines
  • Self Assessment repayments — why a credit may still show and what to do
  • Self Assessment after bankruptcy — using the correct UTR
  • Choosing the quickest way to contact HMRC for personal tax queries
  • Clients can claim a tax refund in minutes
  • Providing feedback on HMRC Manuals
  • Tax adviser registration now open — check if and when you need to register

Agent engagement

  • Reminder — Call for evidence on Business systems integration

https://www.gov.uk/government/publications/agent-update-issue-143/issue-143-of-agent-update

Related content from Claritax Books

Employee-Ownership Trusts, by tax barrister David Pett, brings together the technical and practical aspects of EOTs, offering a vital guide for professional advisers in this field.

Cryptocurrency and Other Digital Assets new

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  • Budget 2026 – CIOT summarises media speculation
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