The Future of Central Bank Digital Currency and Digital Payment Infrastructure
Money is changing in ways that would have seemed implausible to anyone outside a small circle of economists and technologists just fifteen years ago. The transition from physical currency to digital payment systems has been underway for decades through credit cards, bank transfers, and mobile payment applications, but the next phase of this transition is different in kind rather than degree. Central bank digital currency represents the potential transformation of money itself, not just the methods through which existing money moves but the fundamental nature of the currency that a sovereign state issues and guarantees.
When a central bank issues its own digital currency, it creates a brand new form of legal tender that is inherently digital as opposed to converting existing currencies into digital forms of representation and using it in electronic payment systems. The potential ramifications of this innovation on payment systems, monetary policy frameworks, financial inclusion initiatives, privacy rights, and competitive conditions within the international financial sector are significant and are currently being deliberated by various governments, central banks, financial entities, and technology firms that are developing and testing CBDC programs.
It is becoming increasingly essential to know precisely what CBDCs entail, the reasons for central banks’ efforts to create CBDCs, what the particular design decisions made by different CBDC projects reflect about their objectives, and what the likely path of CBDC adoption will be throughout the next decade.
What Central Bank Digital Currency Actually Is
The concept of central bank digital currency is simpler than its technical implementation, and clarifying what it actually is helps separate the genuine significance of CBDC innovation from the considerable amount of confusion that surrounds public discussion of the topic. A central bank digital currency is a digital form of a country’s sovereign currency, issued and backed directly by the country’s central bank rather than by commercial banks. This direct central bank issuance is the defining characteristic that distinguishes CBDC from the digital money that already exists in abundance in the form of commercial bank deposits, because commercial bank deposits are liabilities of the commercial bank rather than direct claims on the central bank.
When there is a balance held in a bank account, then there is a claim against a commercial bank, which in turn holds assets of its own as well as is under the implicit backing of deposit insurance and the lender-of-last-resort facilities of the central bank. The balance on a CBDC would be a liability of the central bank, the same entity that prints and circulates the physical currency, meaning that its nature is very different from the liabilities of a commercial bank and, consequently, the holder of a balance on a CBDC would have a very different relationship with the issuing body compared to one who holds a balance in a commercial bank account.
This means that government-backed money, when issued in the form of a CBDC, becomes a digital equivalent of a banknote rather than a digital equivalent of a bank deposit, which has important consequences. The digital currency infrastructure required to issue CBDC would have to deal with the crucial difference in the nature of the monetary relationship between the holder of the money and the issuer of the money, a challenge not faced by the traditional payment infrastructure.
Why Central Banks Are Pursuing CBDC Development
The motivations driving central bank interest in CBDC development vary between countries in ways that reflect their specific monetary systems, their financial inclusion challenges, their geopolitical situations, and their competitive relationships with private digital currencies and payment systems. Financial inclusion is one of the most commonly cited motivations, particularly for developing countries where significant portions of the population lack access to traditional banking services but have access to mobile phones that could be used to hold and transact with a CBDC.
A CBDC that can be held and transacted without requiring a relationship with a commercial bank removes one of the most significant barriers to financial inclusion, because it allows the unbanked population to access the formal monetary system directly rather than through intermediaries whose commercial requirements exclude them. CBDC innovation driven by financial inclusion goals has been most prominent in countries including China, the Bahamas, Nigeria, and India, where the scale of the unbanked population and the mobile phone penetration create favorable conditions for CBDC-based financial inclusion.
The competitive pressure posed by private cryptocurrencies and digital payment systems is yet another important driver of CBDC adoption, especially for central banks that fear the possibility of such a system becoming a means to undermine monetary policy effectiveness through the displacement of substantial portions of money and payment activities currently channeled through regulated banks. In addition, in countries that are worried about the risk of being overly reliant on payment systems maintained by private firms or governments of foreign nations, payment sovereignty and resiliency become an important motivation for developing a CBDC, which offers a payment system free from geopolitical risks and vulnerabilities posed by foreign actors.
Design Choices and Their Implications
The design choices that central banks make in developing their CBDC programs reveal the specific priorities and constraints that each program is attempting to balance, and these choices have profound implications for how the resulting system will function and what it will mean for different stakeholders. The most fundamental design choice is whether the CBDC will be retail-facing, meaning available directly to individuals and businesses for everyday transactions, or wholesale, meaning available only to financial institutions for large-value interbank transactions.
Wholesale CBDC represents a more limited innovation that builds on existing central bank reserves infrastructure and does not fundamentally change the relationship between the central bank and the public. Retail CBDC is the more disruptive form that directly changes how individuals and businesses access and hold central bank money. The intermediation model is another critical design choice that determines whether commercial banks and payment service providers remain in the distribution chain for retail CBDC or whether the central bank distributes directly to end users.
Most of those central banks implementing a CBDC on a retail basis will opt for an intermediated system where commercial banks and licensed payment systems act as agents to deliver the CBDCs to customers and create the wallets, since it would be a significant shake-up of the commercial banking system to design an entirely centralized model of retail CBDC delivery that most central banks do not want to implement consciously.
The issuance of a digitally created currency backed by the government but delivered using an intermediated approach allows the role of the commercial banking system to remain unchanged despite a complete reengineering of its underlying monetary infrastructure. Designing the CBDC for privacy purposes can probably be considered the most politically charged aspect of CBDC implementation, as an instrument issued by the government could potentially allow full monitoring of transactions, a feature that cannot be achieved with physical currency.
China’s Digital Yuan and the Geopolitical Dimension
China’s digital yuan, formally known as the e-CNY, represents the most advanced retail CBDC program deployed at significant scale by a major economy, and its development has been watched closely by central banks, governments, and financial market participants around the world both for its technical innovations and for its geopolitical implications. The People’s Bank of China has been developing and piloting the digital yuan since at least 2014, making it one of the longest-running and most systematically developed CBDC programs in existence.
The domestic rollout has proceeded through a series of pilot programs in major Chinese cities, distributing digital yuan to participants through lottery and directing its use at specific retail merchants and for specific transaction categories. Central bank digital currency implementation at this scale provides China with data about real-world user behavior and technical performance that no other major economy’s CBDC program has yet accumulated, which gives the People’s Bank of China a meaningful head start in understanding the operational challenges of retail CBDC at scale.
The international dimension of China’s CBDC ambitions has attracted significant attention from other governments and from the international financial community, because a digital yuan that achieves international acceptance would provide China with a mechanism for conducting international transactions outside the US dollar-dominated SWIFT system, reducing China’s exposure to dollar-based sanctions and potentially expanding the renminbi’s international role in ways that have significant implications for the existing global monetary order. CBDC innovation with geopolitical implications has prompted accelerated development timelines in the United States, the European Union, and other major economies that might otherwise have approached CBDC development more cautiously.
The Digital Euro and the European Approach
The European Central Bank’s digital euro project represents a different approach to CBDC development that reflects the specific priorities of the European monetary union and the regulatory culture of European financial policy. The ECB has been conducting extensive investigation and preparation for a potential digital euro issuance, with a decision on whether to proceed with full development expected following the completion of a multi-year preparation phase.
Europe’s approach to CBDC development has been guided by a focus on the potential impact on financial stability and the role played by commercial banks through setting parameters on the digital euro balance limits in such a manner as to discourage deposit migration from banks’ accounts to the digital euro that would affect their funding and ability to generate credit.
The digital currency technology for the digital euro has been developed with a high level of data privacy that is consistent with European regulatory principles related to data protection, including the idea of making the digital euro an offline medium for conducting transactions with no trace and with a certain level of transaction anonymity comparable with paper money. Government-controlled digital money in Europe has been developed in such a way as to co-exist with private payments systems, as indicated by the emphasis on the digital euro being an addition to private financial institutions’ product portfolio rather than competition for it.
The United States Federal Reserve and CBDC Debate
The United States has been among the more cautious major economies in its approach to CBDC development, reflecting both the specific strengths of the existing US dollar payment system and the political complexity of any major change to monetary infrastructure in the American political context. The Federal Reserve has conducted extensive research on the potential design and implications of a US CBDC and has published detailed discussion papers exploring the design choices and trade-offs involved, but has consistently indicated that any issuance of a US CBDC would require authorization from Congress rather than proceeding on the Federal Reserve’s own authority.
The central bank digital currency debate in the United States has been politically charged, with concerns about government surveillance of transactions, potential disruption to the commercial banking sector, and the implications for the US dollar’s international reserve currency status all featuring prominently in Congressional discussions.
The existing strength of the US dollar payment system, which includes highly developed private payment infrastructure and the global dominance of the dollar in international transactions, reduces the urgency of CBDC innovation for the United States compared to countries where existing payment infrastructure is weaker or where international payment dependencies are more acute. The competitive dynamics of CBDC development globally, however, including China’s progress with the digital yuan and the potential for CBDC-based international payment systems to reduce dollar dominance, create pressure for the United States to engage more actively with CBDC development rather than remaining indefinitely on the observational sidelines.
Implications for Payment Infrastructure
The development of CBDC programs globally will require significant investment in new digital currency infrastructure that connects central bank issuance systems with the commercial bank and payment service provider distribution layer and ultimately with the end users who hold and transact with CBDCs. This infrastructure investment creates both challenges and opportunities for existing financial institutions and payment technology companies, because CBDC distribution infrastructure will need to be built by entities that have the technical capability and the regulatory authorizations to serve as distribution intermediaries, which positions banks and established payment companies favorably while also opening space for new entrants who can build compelling CBDC wallet and transaction experiences.
Payment data protection implications of CBDC infrastructure are significant, because the transaction data generated by CBDC payments has different characteristics from existing payment data depending on the privacy design choices built into each CBDC system, and the regulatory framework governing how this data can be accessed, retained, and used will be one of the most consequential governance questions associated with CBDC implementation.
Conclusion
Central bank digital currency represents one of the most significant potential transformations of monetary infrastructure since the transition from commodity-backed currency to fiat money, and CBDC innovation is progressing from theoretical exploration to practical implementation across a growing number of jurisdictions. Government-backed digital money in CBDC form creates new possibilities for financial inclusion, payment system resilience, monetary policy effectiveness, and sovereign control over payment infrastructure alongside genuine risks and design challenges that each implementing central bank must navigate within its specific economic and political context.
Digital currency infrastructure development is proceeding at different paces in different jurisdictions with different design choices that reflect different priorities, and the ultimate shape of the global CBDC landscape will emerge from the interaction of these diverse approaches over the coming decade rather than from a single coordinated global design. Understanding this landscape and its trajectory is increasingly important knowledge for financial institutions, technology companies, policy makers, and businesses that will operate in a monetary environment that is being reshaped by the most fundamental innovation in the nature of money in generations.