ISO 20022 is a universal message standard for payments. It replaces the older SWIFT MT format with richer, XML-based messages. In South Africa it is something banks, payment system operators and other financial market infrastructures adopt, not something a business registers for.
The South African Reserve Bank (SARB) completed adoption in its SAMOS real-time gross settlement system over the weekend of 17–19 September 2022 (per the SARB ISO 20022 FAQ). None of the SARB documents we checked sets an ISO 20022 obligation on ordinary businesses or consumers, so for transaction banking the practical question is what your bank needs from you.
Business Requirements at a Glance
- Who adopts it: the SARB, the banks that participate in SAMOS and other financial market infrastructures.
- Ordinary businesses: the SARB pages do not state an ISO 20022 obligation for them. Ask your bank what, if anything, it needs from you.
- Payment service providers (PSPs): a 2025 SARB consultation paper says the SARB will gradually mandate PSPs to adopt ISO 20022. That paper was a draft for comment.
- Where to confirm: the SARB’s National Payment System Department, and your own bank for transaction banking.
Registration and Legal Requirements
There is no ISO 20022 registration or licence in the SARB material. The SARB treats it as a messaging standard adopted by the payment system. The only legal direction found is the SARB’s stated intention, in a draft 2025 interoperability paper, to gradually mandate PSPs to adopt it; confirm the final position with the SARB if you are a PSP.
Global migration is led by SWIFT, which set 2025 as the deadline for all users of its network. The SARB ISO 20022 FAQ describes a four-year global adoption period from November 2021 to December 2025, with MT and ISO 20022 coexisting in the meantime.
Documents and Ownership Information Required
No documents are required to “comply with” ISO 20022 as such. What changes is the data carried in payment messages. According to the SARB post go-live media release, the XML format allows more detailed information, including the remittance details, the purpose of the payment, the original source and the ultimate beneficiary.
If you send high volumes of payments from your own systems, ask your bank or software provider which payment details they now need to capture and in what format.
Tax, Licence and Compliance Requirements
ISO 20022 carries no tax or licence requirement of its own. The SARB expects the richer data to support compliance, transparency, efficiency and interoperability across payment systems.
Some retail systems were already built on the standard before the 2022 SAMOS go-live. The SARB lists the EFT debit system (with DebiCheck), the TCIB cross-border low-value scheme from BankservAfrica (implemented in August 2021), PayShap and Authenticated Collections.
Process, Deadlines and Ongoing Obligations
- SAMOS (domestic RTGS): adoption completed over 17–19 September 2022. The SARB deployed a translation service so SAMOS could keep processing instructions from participants that had not yet migrated.
- SADC-RTGS: a 2022 SARB FAQ expected migration by the end of October 2023, but the later SARB interoperability consultation paper says it migrated in June 2024.
- SWIFT network: SWIFT’s deadline for all users was 2025.
- PSPs: no final mandate date is stated in the SARB material we read.
The SARB’s RTGS Renewal Programme page lists its ISO 20022 newsletters.
Frequently Asked Questions
What is ISO 20022 in transaction banking?
It is the message standard behind payment instructions between banks and payment systems. It carries more structured data than the older SWIFT MT format.
Does this affect my ordinary business banking?
None of the SARB documents we checked places an ISO 20022 obligation on ordinary businesses or consumers. Banks handle the message format. Ask your bank if it needs any new details from you when you make payments.
Who sets the deadlines?
The SARB sets them for the South African payment system, and SWIFT set the global deadline for its network. The SARB’s 2025 consultation paper says it will gradually mandate PSPs to adopt the standard.
When did South Africa move to ISO 20022?
SAMOS adopted it over 17–19 September 2022 and the SADC-RTGS migrated in June 2024.
Confirm the current position with the South African Reserve Bank at resbank.co.za and your own bank. See also our guide to company registration requirements and browse all business and compliance requirements.