What Is a CBDC? Benefits, Risks, and What Real-World Pilots Have Taught Us

Central bank digital currencies (CBDCs) are one of the most pivotal innovations in the evolution of money. CBDCs are digital forms of fiat currency issued and backed by a nation’s central bank.

As of 2024, approximately 91% of surveyed central banks were in some stage of CBDC exploration, according to data cited in 2025-2026 policy literature. Yet real-world adoption results have been mixed, with major pilots in China, the Bahamas, and Nigeria showing limited uptake. Understanding the genuine trade-offs is more important than ever.

This comprehensive guide examines the case for CBDCs as well as potential risks that must be addressed. Weighing benefits against drawbacks illustrates why careful implementation is crucial to unlocking CBDCs’ promise while avoiding pitfalls.

The Potential Benefits of CBDCs

Proponents point to several key advantages offered by central bank digital currencies:

Financial Inclusion

CBDCs have the potential to bring unbanked populations into the formal financial system. An estimated 1.4-1.7 billion adults globally lack bank accounts, yet many have mobile phones. In principle, a well-designed CBDC could provide a gateway to digital finance using basic devices. However, a 2026 systematic literature review (MDPI Computers) notes an important caveat: CBDC designs that require identity verification for access may actually exclude undocumented or marginalized populations who are most in need of inclusion. The inclusion benefit is real but not automatic, and depends heavily on design choices around access requirements and digital literacy support.

Payment Efficiency

CBDCs enable faster and more convenient digital payments. Without need for cash, transfers occur seamlessly. CBDCs also quicken settlement times between financial institutions. This lubricates economic activity.

Monetary Policy Control

CBDCs give central banks new tools for monetary policy, including programmable features like expiration dates on stimulus funds. However, 2025 DSGE modeling from NBER (Working Paper 33968) and related academic work shows that the interactions between CBDCs, bank deposits, and monetary transmission are more complex than early analyses suggested. A poorly calibrated CBDC could disrupt bank funding channels and reduce the effectiveness of interest rate policy rather than enhancing it.

Security

Well-designed CBDCs move a currency fully into the digital realm with state-of-the-art cryptography. This provides security against counterfeiting and other vulnerabilities physical cash faces. Fraud prevention improves.

Potential Risks and Drawbacks of CBDCs

Despite their promise, CBDCs also come with an array of risks regulators must consider:

Financial Privacy

CBDCs enable greater government surveillance of citizen spending patterns and transactions. Anonymity may be reduced compared to physical cash. China’s CBDC proposal omits privacy features, raising concerns.

Bank Disintermediation

If citizens shift funds from commercial bank deposits into CBDC held directly at the central bank, banks lose a key funding source. A 2026 study published in the Eurasian Economic Review examined the potential impact of a digital euro on bank funding and profitability, finding meaningful risks to bank balance sheets. Most CBDC designs attempt to mitigate this through holding limits (caps on how much CBDC an individual can hold) and tiered remuneration structures. However, the IMF’s 2025 policy paper notes that calibrating these limits correctly is an ongoing governance challenge.

Cybersecurity Hazards

As a centralized ledger, a CBDC represents a large attack surface for hackers, network outages, and other operational risks. Robust redundancy and security protocols are essential to prevent cyber threats.

Monetary Instability

Depending on design choices, CBDCs could enable faster bank runs during crises. If redemption demands exceed central bank reserves, it could lead to monetary instability. Throttling limits help prevent mass cashouts.

Key Design Choices to Balance Pros and Cons

CBDCs involve complex tradeoffs between efficiency, privacy, stability, control and more. Technical architecture and policy parameters must balance competing needs:

• Access – Who can use the CBDC? Wide distribution aids inclusion but risks crime.
• Privacy – Will transactions be anonymous or tracked? Oversight aids policy but hurts privacy.
• Intermediation – Will banks interface with the CBDC or do citizens hold funds directly? The latter risks disintermediation.
• Limits – What transaction or balance caps are imposed? Throttles prevent destabilizing outflows.
• Tech – Which DLT architecture is chosen? Distributed ledgers enhance resilience.
• Coexistence – Does CBDC replace cash or circulate alongside it? Gradual migration is lower risk.

Carefully calibrated design tradeoffs are crucial for realizing the benefits of CBDCs while curtailing adverse impacts.

How to Think About CBDCs: A Decision Framework for Different Stakeholders

Not everyone evaluates CBDCs from the same position. Here is a simple framework:

If you are a policymaker or central banker:

• Priority questions: Does the design preserve financial stability? How are bank disintermediation risks mitigated? What are the governance structures for data access?
• Key reference: IMF 2025 policy paper on CBDC challenges and risks

If you are a commercial banker:

• Priority questions: Will CBDC holding limits protect deposit bases? How will CBDC affect our funding costs and lending capacity?
• Key reference: Eurasian Economic Review 2026 study on digital euro impact on bank funding

If you are a consumer or citizen:

• Priority questions: What happens to my privacy? Is my CBDC balance insured like a bank deposit? Can I use it offline?
• Key reference: MDPI 2026 systematic review on retail CBDC design trade-offs

If you are an economist or researcher:

• Priority questions: How does CBDC interact with monetary policy transmission? What are the welfare implications?
• Key reference: NBER Working Paper 33968 (2025) on macroeconomic modeling of CBDC

CBDC vs Cash vs Cryptocurrency: How Do They Compare?

👉 Quick takeaway: CBDCs combine the state-backed stability of cash with the programmability of crypto — but trade away the anonymity of physical cash and introduce centralized cyber risk that neither cash nor decentralized crypto carries.

This comparison illustrates why CBDC design choices are not straightforward: gaining programmability and inclusion benefits often requires accepting reduced privacy and increased cyber risk.

The Privacy vs. Inclusion Trade-Off: The Central Design Dilemma

The most contested design question in CBDC development is how to balance financial privacy against financial inclusion and regulatory oversight. These goals are often in direct tension:

• High anonymity (like cash): Protects user privacy but enables tax evasion, money laundering, and limits the central bank’s ability to use CBDCs for targeted policy.
• Full transaction transparency: Enables anti-money-laundering compliance and targeted stimulus delivery, but creates a government surveillance infrastructure over citizen spending.
• Tiered privacy models: Some designs propose allowing small, anonymous transactions below a threshold while requiring identity verification above it. This is the approach most frequently discussed in 2025-2026 policy literature as a potential middle ground.

The IMF’s November 2025 policy paper on CBDC challenges and risks highlights governance and privacy design as among the most unresolved issues in retail CBDC deployment. Meanwhile, a 2026 systematic literature review (MDPI Computers) notes that privacy and inclusion are not always compatible: designs that maximize inclusion through broad access may require identity verification that excludes undocumented populations.

Major CBDC Projects Around the World

Many central banks are piloting or researching CBDCs, with some nearing launch:

• China – The People’s Bank of China has run extensive e-CNY trials across major cities. However, as of 2024-2025, adoption has been described as ‘low and concentrated’ despite significant government promotion, highlighting the gap between pilot scale and genuine public uptake. Privacy limitations remain a core design concern.
• European Union – The European Central Bank is in the preparation phase for a potential digital euro. Research published in 2025-2026 has focused heavily on the risk of bank disintermediation, with a 2026 Eurasian Economic Review study finding significant potential impacts on bank funding and profitability. The ECB has proposed holding limits as a key safeguard. A final decision on whether to issue a digital euro has not yet been made.
• US – The Fed has studied a digital dollar and its impacts intensively but has no imminent plans to mint one. Privacy remains a major hurdle.
• India – The Reserve Bank of India launched phased pilots of the digital rupee (e-Rupee) beginning in 2022, covering both retail and wholesale use cases. Pilots have continued into 2024-2025 across multiple cities and user groups. Current status and adoption outcomes are still being assessed.
• Bahamas – The Sand Dollar, launched in 2020, is one of the world’s first live retail CBDCs. However, systematic literature reviews published in 2025-2026 describe its adoption as ‘almost nonexistent compared with cash,’ underscoring how technical launch does not guarantee public uptake.
• Nigeria – The eNaira was launched in 2021 but has shown limited active usage as of 2023-2024 reporting. Analysts cite low merchant acceptance and public trust barriers as key obstacles.

The pace of sovereign CBDC adoption will accelerate as research clarifies how to maximize public benefits while minimizing unintended consequences.

Cross-Border CBDCs and Interoperability: The Next Frontier

Beyond domestic use, central banks are increasingly exploring how CBDCs could work across borders. Multi-CBDC (mCBDC) arrangements would allow different countries’ digital currencies to interoperate, potentially reducing the cost and friction of international payments significantly.

A 2025 CNRS working paper documents growing interest in multi-CBDC frameworks as a way to improve cross-border settlement efficiency and reduce reliance on correspondent banking networks. Key challenges include: agreeing on technical standards, managing exchange rate risk between CBDCs, and ensuring consistent regulatory oversight across jurisdictions.

This cross-border dimension adds another layer of complexity to the pros and cons calculation: a well-designed domestic CBDC that cannot interoperate internationally may miss a significant portion of its potential value.

What Real-World CBDC Pilots Have Taught Us

The gap between CBDC promise and actual public adoption is one of the most important findings from 2024-2026 research. Three case studies illustrate the pattern:

1. China’s e-CNY: The People’s Bank of China has distributed billions of yuan in digital currency trials across dozens of cities. Despite this scale, adoption as of 2024-2025 is described in academic reviews as ‘low and concentrated,’ with most usage driven by government-subsidized incentives rather than organic demand.
2. Bahamas Sand Dollar: Launched in 2020, the Sand Dollar was a world first. By 2025-2026 literature assessments, adoption remains ‘almost nonexistent compared with cash.’ The Bahamas case demonstrates that even a fully launched CBDC does not automatically displace existing payment habits.
3. Nigeria eNaira: Launched in 2021, the eNaira has seen limited active uptake as of 2023-2024 data. Low merchant acceptance and public skepticism have been cited as barriers.

Common lessons across pilots: Public trust, merchant acceptance, user experience, and incentive design appear to matter as much as technical architecture. The IMF’s 2025 policy paper emphasizes that governance and user-adoption strategies must be central to any CBDC rollout plan.

Frequently Asked Questions About CBDCs

Will a CBDC replace cash?

Current evidence suggests no, at least not immediately. Major pilot programs in the Bahamas, Nigeria, and China have shown that CBDCs coexist with cash rather than replacing it. Most central banks and the IMF advocate for gradual coexistence rather than forced replacement.

Can the government see all my CBDC transactions?

This depends entirely on design. Some proposals include full transaction transparency for anti-money-laundering purposes. Others propose tiered privacy models where small transactions remain anonymous. The 2025 IMF policy paper identifies privacy design as one of the most unresolved challenges in CBDC deployment.

Will CBDCs hurt commercial banks?

Potentially, yes. If consumers hold CBDC directly at the central bank instead of deposits at commercial banks, banks could lose a key funding source. A 2026 study in the Eurasian Economic Review on the digital euro found meaningful risks to bank funding and profitability. Most CBDC designs include holding limits to mitigate this risk.

How does a CBDC differ from PayPal or Venmo?

PayPal and Venmo are private-sector payment layers built on top of commercial bank deposits. A CBDC is a direct liability of the central bank, equivalent in legal status to cash. This means no counterparty risk from a private company failing.

What is the status of a digital dollar in the US?

As of the article’s last update, the Federal Reserve has studied a digital dollar extensively but has no imminent plans to issue one. Privacy concerns and the role of commercial banks in any potential design remain unresolved.

Conclusion

Central bank digital currencies sit at a genuine crossroads. The potential benefits, from financial inclusion to payment efficiency to programmable monetary policy, are real. So are the risks: privacy erosion, bank disintermediation, cyber vulnerabilities, and the sobering real-world evidence that even launched CBDCs in the Bahamas, Nigeria, and China have struggled to achieve meaningful public adoption.

The evidence from 2025-2026 research makes clear that CBDC success is not primarily a technical challenge. It is a governance, trust, and design challenge. As the IMF noted in its November 2025 policy paper, navigating these challenges requires careful attention to privacy architecture, financial stability safeguards, and user adoption strategies.

For anyone evaluating CBDCs, whether as a policymaker, a banker, or a curious citizen, the most important takeaway is this: the design choices made before launch will determine whether a CBDC delivers on its promise or becomes another underused pilot. The details matter enormously.