Cross border payments are essential to the global economy, enabling trade, investment, and remittances at extraordinary scale. Yet today’s payments landscape is becoming increasingly fragmented. Market dynamics, rapid technological change, regulatory divergence, and geopolitics are reshaping how money moves across borders — often at the expense of speed, cost, transparency, and access for end users.

While some degree of fragmentation can reflect healthy innovation and competition, unmanaged fragmentation risks undermining the very benefits that cross border payments are meant to deliver: efficiency, inclusion, and economic integration. For end users, the consequences are tangible: higher costs, slower transactions, reduced transparency, and, in some corridors, outright exclusion. At the system level, fragmentation risks weakening network effects and increasing vulnerabilities in times of stress.

Fragmentation in the global payment system is now broadly recognised by policymakers, central banks, and industry. However, what are less clear are the forces driving it, how it should be managed and what role the G20 should play as its Cross Border Payments Roadmap approaches its 2027 deadline.

In its latest Issues Brief, the Atlantic Council identifies four powerful interacting drivers behind today’s payment system fragmentation.

Markets are a foundational driver. Payment corridors vary widely in transaction volumes, institutional capacity, and access to capital. In low volume corridors — particularly those involving small and developing markets — costs remain high even where digital services exist. These outcomes reflect underlying economic rather than technological failure and limit participation in new, interoperable systems.

Technology is both a unifying and fragmenting force. New services, assets, and infrastructures — including stablecoins, instant payment systems, and upgraded data standards — promise efficiency gains but introduce coordination challenges. Where adoption is uneven or incomplete, technology can deepen fragmentation. Even widely endorsed standards such as ISO 20022 risk becoming sources of fragmentation if implemented inconsistently.

Regulation plays a similarly dual role. Recent international standards for non-bank payment service providers aim to reduce long standing regulatory misalignment, but differences in implementation timing, thresholds, and supervisory approaches continue to create interoperability gaps. In some cases, regulatory change has actively driven fragmentation, most visibly through the decline in correspondent banking relationships due to rising compliance costs.

Geopolitics is the most under-addressed driver. Payment systems have become tools of economic statecraft, as seen in sanctions and exclusion from key financial infrastructures. In response, countries are investing in alternative messaging systems, clearing arrangements, and settlement assets, including CBDCs. While often framed as risk management, these moves increase the likelihood that payment systems evolve along geopolitical lines rather than as a globally integrated network.

Against this backdrop, the Atlantic Council argues that the G20 must evolve its approach. With the Cross Border Payments Roadmap nearing its 2027 deadline, the challenge is no longer identifying solutions — it is ensuring implementation, managing geopolitical realities, and preventing a patchwork of disconnected systems. The G20’s unique convening power positions it to move beyond technical coordination and confront the political economy of global payments head on.

Fragmentation is not a binary outcome. The future of global payments will likely involve multiple systems, assets, and actors. The challenge — and the opportunity — is to ensure these systems remain connected enough to support growth, inclusion, and stability. The decisions taken now will shape whether global payments remain a shared infrastructure or become another arena of strategic competition

Mastercard supports the G20’s goals by helping to keep global payments connected, interoperable, and focused on end user outcomes.

We support the adoption of common standards and data frameworks, recognising that shared foundations are essential for scalable cross border interoperability. We work across markets and corridors, helping connect diverse payment systems while adapting global solutions to local realities — particularly where market size or capacity constraints heighten fragmentation risks. And we engage closely with governments, central banks, and international institutions, contributing private sector insight to policy design and, critically, to implementation.

Geopolitics has become an unavoidable factor in payments. While private firms do not shape foreign policy, Mastercard plays an important role in supporting resilient, neutral infrastructure that continues to serve consumers and businesses in an increasingly complex global environment.

Fragmentation will remain a feature of the payments landscape. The task ahead is not to eliminate it, but to manage it — ensuring that global payments remain inclusive, efficient, and reliable. Mastercard stands ready to support the G20’s next phase of work, helping turn standards into real world impact and ensuring global payments continue to work for everyone.