On 30 September 2026, HM Revenue & Customs (HMRC) published Edition 7 of the Making Tax Digital (MTD) for Income Tax software developer newsletter. This release provides critical technical updates for software developers building solutions compatible with HMRC’s MTD for Income Tax Self Assessment (ITSA) mandate, which requires sole traders and landlords with annual income over £50,000 to maintain digital records and submit quarterly updates from April 2026. The newsletter addresses API changes, testing environment updates, and compliance timelines essential for the January 2027 filing season.
Key Takeaways
- API Enhancements and Sandbox Updates: HMRC has deployed new API endpoints for end-of-period statement submissions and final declaration processing, with updated sandbox test scenarios reflecting 2026/27 tax year parameters.
- Mandatory Digital Record-Keeping Scope: The newsletter clarifies that software must support digital recording of all income and expense transactions for qualifying businesses, with specific guidance on property income categorization and allowable expense digitization.
- Agent Authorization Workflow Changes: Updated OAuth flows for agent-services accounts now require explicit client consent for MTD ITSA permissions, impacting software integration roadmaps for accounting practices managing multiple clients.
Disclaimer: This article is compiled and summarized by the AI based on publicly available information and is for general information purposes only. It does not constitute any form of formal tax advice, legal opinion, or basis for performance. Please consult a qualified professional tax advisor or legal counsel for tax advice.
Source: Read Official Announcement