- Organisation
- HM Revenue & Customs
- Predecessor
- Enterprise Tax Management Platform operating on SAP ECC 6.0
- Destination
- technical conversion underway toward SAP S/4HANA using RISE with SAP and SAP Business Technology Platform in a UK-hosted managed cloud arrangement
- Workload
- SAP S/4HANA, RISE with SAP and SAP Business Technology Platform
- Stage
- underway
Evidence boundary: This is an approved and underway conversion programme, not a completed S/4HANA migration. The May 2029 go-live remains planned, and the current estimated programme range is not a realised cost.
Verified platform change
HMRC began technical conversion of its core tax accounting and payments platform in April 2026, with build planned from January 2027 and go-live planned for May 2029.
Transition
From: Enterprise Tax Management Platform operating on SAP ECC 6.0
To: technical conversion underway toward SAP S/4HANA using RISE with SAP and SAP Business Technology Platform in a UK-hosted managed cloud arrangement
Known unknowns
This is an approved and underway conversion programme, not a completed S/4HANA migration. The May 2029 go-live remains planned, and the current estimated programme range is not a realised cost.