Real Time Information (RTI) Rules and Interface Management (RIM) artefacts and supporting technical specifications for software developers.
RTI RIM 2028 v2.0.zip
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Changes between 2026 to 2027 and 2027 to 2028 RIM v2.0
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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.