Central bank digital currency (cbdc): India's e-rupee and the future of money

What is a Central Bank Digital Currency (CBDC)?

A Central Bank Digital Currency (CBDC) is a digital version of a country’s fiat currency (like the Rupee or Dollar) that is a direct liability of the central bank. Unlike physical cash, it exists only in digital form. Unlike cryptocurrencies, which are decentralized, a CBDC is centralized and issued and guaranteed by the monetary authority of the country, granting it the status of legal tender.

Fun Fact: The Bahamas was the first country in the world to roll out a nationwide CBDC, the “Sand Dollar,” in October 2020, aiming to improve financial inclusion across its many islands.

The global landscape of digital currencies is diverse. In a significant policy shift in January 2025, the United States issued an executive order banning the development of a ‘Digital Dollar’, citing privacy concerns and instead promoting privately issued, dollar-backed stablecoins. This contrasts with nations like China, which is aggressively piloting its Digital Yuan (e-CNY), and the European Union, which is in a preparation phase for a Digital Euro.

Types of Digital Currencies

Digital currencies can be broadly categorized based on their control mechanism and underlying value.

A Deep Dive into India’s Digital Rupee (e₹)

The Reserve Bank of India (RBI) has been actively testing its CBDC, the Digital Rupee (e₹), since late 2022. The pilot is being conducted in two forms:

• CBDC-Wholesale (e₹-W): For inter-bank transactions and settlement of government securities.
• CBDC-Retail (e₹-R): For the general public, designed for person-to-person (P2P) and person-to-merchant (P2M) transactions.

Recent Developments & Key Features (2024-2025)

The e₹ pilot has moved beyond its initial phase and incorporated crucial new functionalities, making it a primary focus of India’s fintech evolution.

1. UPI Interoperability: In a landmark move during 2024, the RBI enabled interoperability between the e₹ and the Unified Payments Interface (UPI). This allows users to pay using their e₹ wallet by scanning any existing UPI QR code, dramatically expanding its merchant acceptance network without requiring new infrastructure.
2. Offline Functionality: To bridge the digital divide, the RBI has been testing offline e₹ transactions. This feature is critical for ensuring access in remote areas with poor or no internet connectivity, mimicking the peer-to-peer exchange of physical cash.
3. Programmability: The pilot is exploring ‘programmable payments’. This allows for specifying end-uses for funds, such as directing government subsidies for a specific purpose (e.g., fertilizer purchase) or setting expiry dates for corporate vouchers.
4. Pilot Expansion: As of early 2025, the retail pilot has grown to involve over 6 million users and numerous participating banks, with the RBI cautiously expanding the user base and transaction volumes.

Analogy: Think of the e-Rupee as having a digital banknote directly in your phone’s wallet, guaranteed by the RBI. A UPI transaction, in contrast, is an instruction for your commercial bank to move money to another bank account. The e-Rupee is the money itself; UPI is the messenger.

Potential Benefits of CBDCs

The adoption of CBDCs offers several advantages for an economy. A useful mnemonic to remember these is I-CREEP.

• Inclusion (Financial): Can provide the unbanked and under-banked with access to formal digital payment systems.
• Cost Reduction: Reduces the massive costs associated with printing, distributing, and managing physical currency.
• Reduced Cash Dependence: Offers a robust digital alternative to cash, potentially improving transaction traceability and reducing tax evasion and illicit financing.
• Efficiency in Cross-Border Payments: Can make international remittances and trade settlements faster, cheaper, and more transparent than traditional correspondent banking systems.
• Effective Monetary Policy: Enables central banks to transmit policy changes more directly and rapidly, such as distributing stimulus funds instantly to citizens’ wallets during a crisis.
• Programmability: Allows for innovative, targeted, and conditional payments for subsidies and welfare schemes.

Statistic: As of late 2024, over 130 countries, representing 98% of the world’s GDP, are in some stage of exploring a CBDC, signaling a clear global trend towards the digitization of sovereign currency.

Critical Policy Appraisal

Analytical Lens: UPSC Focus (Mains & Prelims)

Conceptual Basis

The legal framework for the Digital Rupee (e₹) in India is derived from an amendment to the Reserve Bank of India Act, 1934. The Finance Bill, 2022, expanded the definition of ‘bank note’ to include currency in a digital form, thereby providing the RBI with the statutory power to issue CBDCs.

UPSC Integration: Connecting the Dots

• GS Paper 2 (Polity & Governance): The topic directly relates to the role and functions of the RBI, monetary sovereignty, and the fundamental debate on Right to Privacy (Article 21) versus state oversight.
• GS Paper 3 (Economy): It is a core topic under Indian Economy and issues relating to planning, mobilization of resources, financial inclusion, and the impact on the banking sector. It is also central to monetary policy transmission mechanisms.
• GS Paper 3 (Science & Tech): The underlying technologies like Distributed Ledger Technology (DLT), Blockchain, and cybersecurity are crucial aspects. It is a key component of India’s evolving Digital Public Infrastructure.

Future Impact & Policy Relevance

The success of the e-Rupee is not guaranteed, especially in a country with the phenomenally successful UPI system. The key will be to offer unique value propositions that UPI cannot, such as offline functionality and programmability. In the long term, a successful e₹ could significantly enhance the efficiency of India’s welfare delivery system (DBTs), reduce the size of the grey economy, and be a strategic tool in the internationalization of the Rupee by facilitating cheaper and faster cross-border transactions. It represents a fundamental shift in the nature of money and the architecture of the financial system.

Prelims Practice Question (MCQ)

Question: With reference to India’s Central Bank Digital Currency (CBDC), the e-Rupee, which of the following statements is correct? a) It is a decentralized cryptocurrency managed on a public blockchain. b) Its legal backing is provided by the Information Technology Act, 2000. c) The pilot project is exclusively focused on wholesale inter-bank transactions. d) It is a direct liability of the Reserve Bank of India and is considered legal tender.

Answer: (d) Explanation: The defining feature of a CBDC like the e-Rupee is that it is a sovereign-issued digital currency, making it a direct liability of the central bank (RBI) and granting it the status of legal tender, just like physical banknotes. Option (a) is incorrect as it is centralized. Option (b) is incorrect as its legal basis comes from the RBI Act, 1934. Option (c) is incorrect as the pilot includes both wholesale (e₹-W) and retail (e₹-R) versions.

Mains Sample Question

Question: While Central Bank Digital Currencies (CBDCs) promise greater efficiency and inclusion, they also pose significant risks to privacy and financial stability. Critically analyze this statement in the context of India’s e-Rupee pilot project. (15 Marks, 250 Words)

Mind Map Outline (Revision Structure)

• Central Bank Digital Currency (CBDC)
  • Core Concept
    • Digital form of fiat currency
    • Direct liability of the Central Bank
    • Centralized, unlike cryptocurrency
    • Legal Tender status
  • Types of Digital Currencies
    • Comparison: CBDC vs. Cryptocurrency vs. Stablecoin
  • India’s Digital Rupee (e₹)
    • Legal Basis: Amendment to RBI Act, 1934
    • Pilot Projects
      • Retail (e₹-R): For public use (P2P, P2M)
      • Wholesale (e₹-W): For inter-bank settlement
    • Key Features & Recent Developments (2024-25)
      • Interoperability with UPI
      • Offline Functionality
      • Programmable Payments
  • Policy Analysis
    • Benefits (Mnemonic: I-CREEP)
      • Financial Inclusion
      • Cost Reduction
      • Reduced Cash Dependence
      • Cross-border Efficiency
      • Monetary Policy Effectiveness
      • Programmability
    • Critical Appraisal (Challenges vs. Opportunities)
      • Cybersecurity Risks
      • Privacy Concerns
      • Digital Divide
      • Disintermediation of Banks