Guidance

Real Time Information internet submissions: 2027 to 2028 technical specifications

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

• From: HM Revenue & Customs
• Published: 9 September 2026
• Last updated: 16 September 2026 — See all updates

Documents

RTI RIM 2028 v2.0.zip

ZIP, 972 KB

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Changes between 2026 to 2027 and 2027 to 2028 RIM v2.0

ODT, 13.4 KB

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RTI data item guide 2027 to 2028 v1.0

ODT, 139 KB

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Details

Test service support from October 2026. Live service from March 2027.

Published 9 September 2026

Last updated 16 September 2026 — Show all updates

1. 16 September 2026

   'RTI data item guide 2027 to 2028 v1.0' has been added.

2. 9 September 2026

   First published.