Daniel Makina and Rogers Dhliwayo
“Confidence is the very essence of money” – John Kenneth Galbraith
The global monetary landscape is undergoing substantial transformation as technological innovation increasingly intersects with finance and payment systems. Historically, money has evolved through distinct stages: from commodity money and metallic currencies to banknotes, commercial bank deposits, and electronic payment systems. As digitalization advances, new forms of money are emerging that challenge traditional assumptions regarding monetary systems and institutional arrangements. In this context, the observation by the British economist John Hicks that “money is a matter of functions four: a medium, a measure, a standard, and a store” remains highly relevant because contemporary debates are no longer merely concerned with digitizing payment instruments but increasingly with redefining the functions, architecture, and institutional foundations of money itself.
The emergence of stablecoins, Central Bank Digital Currencies (CBDCs), and broader forms of digital money has initiated one of the most significant transformations in monetary systems since the transition from commodity-based systems to fiat currencies. Recent international developments reveal diverging policy pathways regarding future monetary design. While the United States has increasingly prioritized regulated stablecoin ecosystems, Europe has moved toward the development of the digital euro through CBDC initiatives.
The implications of these developments extend considerably beyond payment efficiency and convenience. They encompass fundamental questions relating to monetary sovereignty, financial stability, monetary policy transmission, financial intermediation, cross-border payments, and the principle increasingly referred to by central banks as the “singleness of money.” Ryozo Himino, Deputy Governor of the Bank of Japan, argues that one of the most important challenges facing future monetary systems concerns preserving confidence that different forms of money remain interchangeable at par value and can be accepted without users needing to question their underlying value. This concern increasingly occupies the centre of policy discussions within the International Monetary Fund (IMF), the Bank for International Settlements (BIS), and the European Central Bank (ECB).
Stablecoins and the Risk of Monetary Fragmentation
The expansion of stablecoins represents one of the most significant innovations in digital finance and payment systems. Stablecoins are privately issued digital assets designed to maintain relatively stable values through reserve arrangements backed by liquid financial assets such as cash, bank deposits, and government securities held to support redemption at or near par value, according to the IMF. While these instruments offer potential benefits through improved payment efficiency, faster transactions, and lower transaction costs, the BIS observes that their widespread adoption raises important concerns regarding monetary fragmentation because differences in issuers, governance arrangements, interoperability, and reserve structures may weaken the uniformity and universal acceptability that underpin modern monetary systems.
Traditional monetary systems derive much of their stability from central bank mechanisms that ensure settlement finality and preserve the interchangeability of money across financial institutions at par value. Ryozo Himino, Deputy Governor of the Bank of Japan, notes that central banks maintain this “singleness of money” through reserve settlement systems that reduce uncertainty regarding the value and acceptability of deposits across institutions. Consequently, the growing prominence of privately issued digital money raises important questions regarding whether future monetary systems can maintain comparable levels of trust, stability, and universal acceptance.
Recent BIS research argues that money functions efficiently because it remains an “information-insensitive” asset that can be accepted by economic agents without requiring continual due diligence regarding underlying risks. Stablecoins may potentially undermine this characteristic because different issuers may possess varying reserve quality, governance arrangements, technological infrastructures, and regulatory oversight.
Central Bank Digital Currencies and Monetary Sovereignty
The emergence of CBDCs has partly been motivated by concerns surrounding the risks associated with private digital money. CBDCs represent digital forms of sovereign money issued directly by central banks as digital liabilities intended to preserve public access to risk-free central bank money within increasingly digital economies.
The ECB argues that the digital euro represents more than a payment innovation; it constitutes an important mechanism for preserving monetary autonomy and reducing strategic dependence on external payment infrastructures. Similarly, the IMF identifies CBDCs as potentially strengthening payment efficiency, supporting financial inclusion, and improving resilience across digital financial systems.
CBDCs may strengthen several dimensions of modern monetary systems. First, they preserve the public role of central bank money within increasingly digital payment environments, ensuring continued access to sovereign risk-free money. Second, they may improve payment system efficiency through faster and potentially lower-cost settlement mechanisms. Third, CBDCs may enhance cross-border payments by increasing interoperability across payment systems and reducing frictions associated with existing transaction infrastructures.
Nevertheless, CBDCs also introduce important policy and financial stability concerns. Direct public access to central bank liabilities could potentially reduce commercial bank deposits and weaken traditional banking intermediation functions. During periods of financial instability, rapid shifts from commercial bank deposits toward CBDCs could intensify deposit outflows and amplify vulnerabilities within the banking system. In addition, privacy and governance considerations remain central to ongoing policy debates. Citizens may express concerns regarding excessive state oversight and the potential surveillance capabilities associated with digital currencies. Consequently, the IMF notes that future CBDC design requires balancing transparency and regulatory objectives with the protection of individual privacy rights and public trust.
Digital Money and the Evolving Role of Central Banks
The broader transition toward digital money implies important changes in the role and functions of central banks. Historically, central banks have maintained price stability, issued currency, ensured payment system stability, and acted as lenders of last resort. However, technological developments increasingly require central banks to perform additional coordination and infrastructure roles within evolving digital ecosystems.
Ryozo Himino, Deputy Governor of the Bank of Japan, further highlights that future monetary systems may increasingly involve tokenized deposits and tokenized central bank reserves operating through distributed ledger technologies rather than traditional account-based systems. Such arrangements may preserve monetary singleness while simultaneously providing the programmability, interoperability, and efficiency benefits associated with blockchain technologies.
The BIS increasingly supports tokenized monetary systems that combine commercial bank money with tokenized central bank reserves. Such approaches attempt to preserve the strengths of existing monetary systems while facilitating technological innovation. Rather than replacing commercial banking systems entirely, tokenized systems may create hybrid monetary architectures where public and private forms of money coexist within integrated digital infrastructures.
Moreover, geopolitical considerations increasingly influence the design and evolution of monetary systems. Payment systems have evolved beyond their traditional transactional functions to become strategic economic infrastructure with implications for economic security and monetary sovereignty. According to the BIS, recent developments involving sanctions, cross-border payment networks, and dependence on external payment providers suggest that future monetary systems increasingly possess implications extending beyond economics toward broader issues of geopolitical strategy, strategic autonomy, and national resilience.
Policy Implications for Future Monetary Systems
Several important implications emerge for policymakers and monetary authorities.
- Maintaining trust remains fundamental because monetary systems ultimately function through confidence and universal acceptability.
- Effective regulation of stablecoins becomes increasingly important. Appropriate reserve requirements, prudential supervision, governance standards, and consumer protection mechanisms may reduce risks associated with monetary fragmentation and financial instability.
- Policymakers should preserve flexibility regarding technological evolution. The future monetary system may not involve a binary choice between stablecoins and CBDCs. Instead, hybrid arrangements involving CBDCs, tokenized deposits, and regulated private digital money may increasingly emerge.
- Resilience considerations remain critical. Recent recommendations from the Swedish Central Bank (Sveriges Riksbank) indicate the importance of maintaining multiple payment channels, including cash, cards, and digital payment systems, recognizing that excessive dependence on single technological systems may create vulnerabilities.
Conclusion
As the Canadian-American economist John Kenneth Galbraith observed, “confidence is the very essence of money,” and this insight captures perhaps the most important lesson emerging from current debates surrounding stablecoins, CBDCs, and digital money. The future of money is not fundamentally a technological challenge but rather an institutional challenge involving trust, governance, and confidence.
Digital innovation presents substantial opportunities for improving payment efficiency, financial inclusion, and cross-border transactions. Yet these developments simultaneously introduce new risks relating to monetary fragmentation, financial stability, and monetary sovereignty. The principal challenge for policymakers therefore lies not in choosing between stablecoins and CBDCs, but in designing monetary architectures capable of preserving trust, maintaining the singleness of money, and enabling innovation simultaneously. Future monetary systems will therefore likely be characterized not by the disappearance of central banks, but rather by their evolution into coordinators and custodians of increasingly complex digital monetary ecosystems.Daniel Makina and Rogers Dhliwayo are editors of Economic Business Insights
