Quick answer: Fixing cross-border payments takes work at three different layers, and the UNCDF, Interledger, and ISO 20022 each sit on one. The UN Capital Development Fund proposes an open, regulated inter-network so any licensed provider can send low-value remittances anywhere. The Interledger Protocol is the technical standard for routing payments across different ledgers. ISO 20022 is the common message format that lets institutions exchange payment data cleanly. Together they map to the policy, network, and data layers of a modern payment rail.
Updated 07/17/2026. By Jake Claver. Educational content, not investment advice.
Cross-border payments are still slow, costly, and uneven. The G20 made fixing that an explicit goal, and the useful way to read the alphabet soup of organizations and standards is to ask which layer of the problem each one addresses. Here is the concrete, sourced version.
The policy layer: the UNCDF inter-network proposal
The UN Capital Development Fund published a paper titled “Open Regulated Global Payments Inter-Network” (the full text is available as a PDF). Its core idea is to interconnect existing payment infrastructure under a neutral, trusted governance layer so that, in the paper’s words, “any regulated service provider will be able to send money to anyone, anywhere in the inter-network.” The focus is low-value international remittances, where costs hit migrants and their families hardest. This is the policy-and-governance layer: who is allowed in, and under what rules.
The network layer: the Interledger Protocol
An open inter-network needs a way to move value between systems that were never built to talk to each other. That is what the Interledger Protocol is designed for. Its site describes it as “a set of standards and protocols that facilitates payments across different ledgers and payment networks,” letting “banks, mobile money systems, fintech platforms, and networks work together, regardless of their underlying technology or the currency they use.” It works a bit like internet routing: payment instructions are broken into small packets that hop through intermediary connectors, which coordinate the transfer and any currency exchange. This is the interconnection layer.
The data layer: ISO 20022
Even connected networks need to speak the same language. ISO 20022 is the global standard for electronic financial messaging: a single, structured approach for how institutions format payment, securities, and treasury data. By standardizing data objects, rules, and processes, it eases interoperability between financial institutions, market infrastructures, and end users, so a payment message carries rich, consistent information from sender to receiver. This is the data-and-messaging layer that the network layer rides on.
How this ties to the G20 program
None of these efforts exists in isolation. The G20 cross-border payments program, coordinated through the Bank for International Settlements’ Committee on Payments and Market Infrastructures (CPMI), set targets to address high costs, low speed, limited access, and weak transparency, organized as a set of 19 building blocks. The CPMI’s report “Interlinking payment systems and the role of application programming interfaces: a framework for cross-border payments” (PDF) is the piece most relevant here. It provides a framework for operators and authorities to evaluate the benefits, challenges, and risks of interlinking arrangements, and notes that harmonized APIs can strengthen payment-system interoperability. The UNCDF proposal, Interledger, and ISO 20022 each slot into that broader, officially coordinated push.
Why this matters
If cross-border rails get cheaper and more interoperable, the biggest beneficiaries are the people paying the most today: migrants sending remittances home, and small businesses trading across borders. Reliable payment infrastructure is also a repeat-use case, which is why so many institutions and standards bodies are working the same problem at once. Understanding the layers, policy, network, and data, makes it easier to separate genuine infrastructure progress from marketing, and to see how a specific project or asset would actually have to fit in.
Common questions
What is the UNCDF’s role in cross-border payments?
The UN Capital Development Fund proposed an open, regulated global payments inter-network in which any regulated service provider can send money to anyone in the network. Its focus is lowering the cost of low-value international remittances by interconnecting existing infrastructure under neutral governance.
What is the Interledger Protocol?
Interledger is a set of standards and protocols that facilitates payments across different ledgers and payment networks. It lets banks, mobile money systems, and fintech platforms work together regardless of their underlying technology or currency, by routing payment instructions through intermediary connectors.
What is ISO 20022 and why does it matter for payments?
ISO 20022 is the global standard for electronic financial messaging, providing a single structured approach for how institutions format payment and other financial data. By standardizing data objects and rules, it eases interoperability between financial institutions, market infrastructures, and end users.
How do these three fit together?
They address different layers of the same problem. The UNCDF proposal is the policy-and-governance layer, the Interledger Protocol is the network-interconnection layer, and ISO 20022 is the data-and-messaging layer. All three align with the G20 cross-border payments program coordinated through the BIS CPMI.
What is the G20 cross-border payments program?
It is a globally coordinated effort, coordinated through the BIS Committee on Payments and Market Infrastructures, to address high costs, low speed, limited access, and insufficient transparency in cross-border payments. It is organized as a set of 19 building blocks, including work on interlinking payment systems and harmonizing APIs.
This content is educational only. It is not tax, legal, or investment advice. Check primary sources and speak with a qualified professional before making financial decisions.
