Guidance

Real Time Information internet submissions: 2026 to 2027 technical specifications

Real Time Information (RTI) Rules and Interface Management (RIM) artefacts and supporting technical specifications for software developers.

• From: HM Revenue & Customs
• Published: 7 August 2025

Documents

RTI RIM 2027 v1.0.zip

ZIP, 2.9 MB

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Changes between 2025 to 2026 and 2026 to 2027 RIM v1.0

ODT, 16.2 KB

This file is in an OpenDocument format

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Request an accessible format.

If you use assistive technology (such as a screen reader) and need a version of this document in a more accessible format, please email different.format@hmrc.gov.uk. Please tell us what format you need. It will help us if you say what assistive technology you use.

Details

Test service support from October 2025. Live service from March 2026.

Published 7 August 2025