meta_id 3026678

On 1 April 2026, Open Banking Limited (OBL) published version 4.0.1 of the Open Banking Standard following approval by the Trustee. This targeted update is designed to improve clarity, consistency and ease of use across the Standards, focusing on refining existing requirements rather than introducing significant new functionality. Version 4.0.1 aims to remove ambiguity, support regulatory compliance and ensure participants can continue to deliver reliable services to end users. The update has been shaped with input from an Expert Advisory Group of industry specialists and reflects real-world implementation experience and needs. Changes span technical specifications, Customer Experience Guidelines and Operational Guidelines, with updates including improved consistency across documentation, clarified implementation of key requirements and support for regulatory obligations. Notable updates include additional international payments data, refinements affecting Variable Recurring Payments for sweeping, and confirmation of how certain fields should be treated across the Standard. The update also introduces Cryptoassets (CRYP) as a Transaction Risk Indicator, supporting firms that choose to use this information as part of their risk controls. A number of known issues have been corrected, along with updates to supporting guidance and frequently asked questions. OBL has also published version 3.4 of the Dynamic Client Registration specification alongside v4.0.1. The Monetary Instrument (MI) Standard remains at version 3.1.11 with no changes. OBL will continue to work closely with ecosystem participants to maintain momentum and provide clarity as open banking evolves. Full details of the changes, including technical documentation and change logs, are available on the Open Banking Standards website. REFERENCES: https://www.openbanking.org.uk/news/obl-publishes-open-banking-standard-v4-0-1/