ISO 20022 and AML compliance in the instant payments era

AML

The rapid global expansion of instant payments is pushing financial institutions to rethink how they manage compliance and financial crime prevention.

According to RelyComply, as transaction speeds accelerate and cross-border payment volumes grow, ISO 20022 AML compliance is emerging as a key priority for banks, FinTechs and payment service providers.

The industry appears to be responding accordingly. Nearly 95% of financial institutions are either modernising their payments infrastructure or planning to do so in the near future, recognising that legacy technology can no longer support real-time monitoring requirements or the growing expectations of customers who demand fast, secure payment experiences.

ISO 20022 represents a significant development in the evolution of financial messaging standards. While ISO 27001 has long provided governance around protecting sensitive transaction data and information security processes, ISO 20022 focuses on improving the quality, structure and usability of payment data itself.

For decades, traditional financial messaging formats lacked the ability to deliver the level of detail needed for modern anti-money laundering (AML) investigations. Legacy systems often struggle to process structured data efficiently, making it difficult for institutions to detect suspicious activity or protect customers in an environment where cybercrime and financial fraud continue to increase.

There are encouraging signs that organisations are addressing these limitations. Firms achieving full accreditation under ISO/IEC 27001:2022 are demonstrating their commitment to safeguarding personal data while supporting financial crime risk mitigation.

Companies such as RelyComply highlight how robust data governance frameworks can simultaneously enable regulatory compliance and support innovation within FinTech ecosystems. When implemented correctly, these standards allow firms to move forward with digital transformation while ensuring that compliance obligations remain firmly in place.

One of the core benefits of ISO 20022 lies in its ability to modernise structured payments data. Fragmented systems, inconsistent messaging formats and weak compliance processes have historically provided opportunities for financial criminals to exploit gaps between institutions.

These risks become even more pronounced when payment services must accommodate emerging asset classes such as digital assets while supporting increasingly complex cross-border transactions. International bodies including the G20 have repeatedly identified the lack of standardised messaging as a major obstacle in global payments infrastructure.

ISO 20022 addresses this challenge by introducing structured, interoperable payment messages that include richer data fields. Unlike older messaging formats, ISO 20022 embeds detailed information directly within payment messages, including remittance data, sender and recipient identities, and purpose codes that describe the underlying reason for a transaction. This level of granularity significantly enhances the ability of financial institutions to monitor and analyse payment flows for suspicious behaviour.

The urgency of adopting this standard increased in late 2025, when SWIFT ended the coexistence period between legacy MT messaging and ISO 20022. Since 22 November 2025, ISO 20022 has become the default format for cross-border payments across the SWIFT network, accelerating the migration timeline for financial institutions worldwide.

For payment service providers, international banks and FinTech firms, the move toward structured data has direct implications for AML data quality. When transaction monitoring systems rely on fragmented or poorly structured data, compliance teams face significant challenges in detecting anomalies or identifying suspicious patterns.

ISO 20022 enables payment information to be consistently tagged and categorised, allowing advanced analytics tools to deliver more accurate AML insights and identify risks more effectively.

Structured payment data also plays a crucial role in enabling automation across compliance workflows. With regulations such as the EU’s Instant Payments Regulation and more than 80 instant payment schemes now operating globally, real-time screening is increasingly becoming a baseline expectation.

By removing the need for manual interpretation of payment data, ISO 20022 allows AI-driven RegTech platforms to perform AML checks with greater speed and precision. Detailed and standardised information improves investigation accuracy while supporting faster decision-making during suspicious activity reviews.

In addition, structured data improves sanctions screening and entity resolution processes. By aggregating contextual information around individuals, entities and transactions—including sender details, payment purpose codes and counterparties—financial institutions can build more complete risk profiles. This capability allows compliance teams to identify links between transactions and sanctioned entities in real time, reducing false positives and enabling faster escalation of genuine financial crime risks.

However, adopting ISO 20022 does not automatically solve all AML challenges. Differences in how payment service providers implement the standard can create inconsistencies across payment ecosystems. The richer datasets produced by ISO 20022 require sophisticated analytics and monitoring tools capable of interpreting the information effectively. Without modern infrastructure to process and analyse these datasets, institutions may struggle to unlock the full benefits of the new messaging standard.

Despite the end of the SWIFT coexistence period, adoption remains uneven across global payment networks. It is estimated that only around 80% of Real Time Gross Settlement (RTGS) systems had implemented ISO 20022 by the end of last year. Achieving true harmonisation across payment ecosystems will require continued investment in infrastructure upgrades and operational transformation.

Legacy systems remain another significant barrier. Payment companies continue to allocate roughly 60% of their IT budgets to maintaining outdated infrastructure. As payment complexity increases and new use cases emerge after 2026, institutions relying on reactive upgrades may find themselves struggling to keep pace with evolving compliance demands.

For many organisations, the real value of ISO 20022 emerges when it is combined with robust information security frameworks such as ISO 27001 and integrated RegTech platforms. While ISO 20022 enhances the quality and structure of payment data used for AML monitoring, ISO 27001 ensures that this information is securely managed, audited and protected against breaches or misuse.

Together, these standards create a stronger foundation for identity verification, sanctions screening and transaction monitoring. Financial institutions working with RegTech partners that hold ISO/IEC 27001:2022 certification gain additional confidence that compliance processes are supported by secure and reliable data management frameworks.

As payment volumes continue to rise and new digital payment rails emerge, the importance of these combined standards will only increase. RegTech platforms capable of processing structured payment data within secure, centralised environments can help financial institutions reduce friction for customers while maintaining effective financial crime controls.

Ultimately, ISO 20022 represents a major shift in the evolution of global payments infrastructure. By enabling richer data, stronger interoperability and more advanced compliance monitoring, the standard provides financial institutions with a powerful tool to strengthen AML defences. When supported by modern RegTech platforms and strong information security frameworks, ISO 20022 AML compliance can form the foundation for scalable, secure cross-border payment systems in the years ahead.

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