A Central Bank Digital Currency (CBDC) is a digital form of a country’s fiat currency, issued and backed by the central bank. Unlike private cryptocurrencies (Bitcoin, Ethereum) or stablecoins (Tether, USDC), a CBDC is legal tender with the full backing of the sovereign. India’s e-Rupee (Digital Rupee) is being rolled out by the Reserve Bank of India (RBI) via wholesale and retail pilots. With global central banks racing to test CBDCs — and China’s Digital Yuan leading — India’s CBDC programme has strategic, economic, and financial inclusion implications.
Background: What Is a CBDC?
A CBDC is a digital currency backed by the Central Bank. Like physical currency notes, it is legal tender for all payments within the country. Unlike cryptocurrencies, it enjoys stability due to sovereign backing.
CBDC is often called "programmable money" because it can be programmed for specific users, end-uses, or regions (e.g., subsidy delivery to specific beneficiaries for specific purposes).
Types of CBDC
- Retail CBDC (e-Rupee-R) — for the general public for day-to-day transactions.
- Wholesale CBDC (e-Rupee-W) — for financial institutions to settle interbank and securities transactions.
CBDC vs Fiat Currency vs Cryptocurrency vs Stablecoin
| Feature | Fiat Currency (Notes) | CBDC | Cryptocurrency | Stablecoin |
|---|---|---|---|---|
| Issuer | Central Bank | Central Bank | Private / Decentralised | Private |
| Value backing | Sovereign guarantee | Sovereign guarantee | None intrinsic | Pegged to other currency/asset |
| Legal tender | Yes | Yes | Generally no (El Salvador — exception) | Generally no |
| Payment medium | Yes | Yes | Sometimes | Sometimes |
| Examples | Rupee notes | e-Rupee, eDinar, Sistema, Petro, e-Krona, Digital Yuan | Bitcoin, Ethereum, Dogecoin | Tether, USDC, Diem (proposed) |
| Volatility | Low | Low | High | Low (if peg holds) |
Experiments of CBDC in Other Countries
- Tunisia: eDinar.
- Ecuador: Sistema (discontinued).
- Venezuela: Petro (politicised, uncertain).
- Sweden: e-Krona (pilot).
- China: Digital Yuan (largest rollout).
- Bahamas: Sand Dollar (live).
- Nigeria: eNaira.
- Jamaica: Jam-Dex.
Several advanced economies (EU, UK, US, Canada, Japan, Australia) are in research or pilot phases.
Legal Framework for Issuance of CBDC in India
The RBI Act, 1934 empowers RBI to be the sole issuer of currency notes. The Finance Act, 2022 amended Section 2 of the RBI Act, 1934 to include digital form of currency. Under the amendment:
"Bank note" includes bank note issued in physical or digital form.
This enabled RBI to launch CBDC as legal tender.
Benefits of CBDC
Based on the Subhash Chandra Garg Committee (2019) and RBI concept notes:
- Promote cashless economy by reducing cash-to-GDP ratio (~10% in India).
- Financial inclusion — offline CBDC can reach unbanked, remote areas.
- Stability and resilience of payment system: Ensures no single private entity dominates payments.
- Counter private stablecoins (e.g., earlier Diem proposal).
- Increase effectiveness of monetary policy — programmable interest rates, real-time data.
- Push to fintech development.
- Real-time economic activity picture → better GDP estimates and policymaking.
- Traceability curbs corruption, money laundering, terrorist financing.
- Lower cost of printing, storing, transporting cash.
- Cross-border payments — possible game changer through mBridge, Project Nexus (BIS), bilateral CBDC corridors.
Challenges and Concerns
Disintermediation of banks
If CBDC offers a safe, liquid alternative to bank deposits, depositors may prefer it during stress, accelerating bank runs. Banks may lose deposits → higher funding costs → reduced credit.
Security and financial system abuses
Vulnerable to cyber-attacks, hacking, ransomware. Misuse for illicit activities possible.
Competition to private payment service providers
Direct competition with Paytm, PhonePe, Google Pay, etc. could reduce their incentive to innovate.
Higher burden on RBI
Managing a retail CBDC may divert RBI's focus from core functions.
Reputation risk
Any security breach damages public confidence in the central bank.
Data privacy
Traceability raises privacy concerns. Need strong safeguards under Digital Personal Data Protection Act, 2023.
UPI dominance
India already has world-beating UPI infrastructure (over 15 billion monthly transactions in 2024). Adding retail CBDC must complement, not cannibalise UPI.
Design Choices for e-Rupee
- Token-based (like cash — anonymous for small value, traceable for large) vs account-based.
- Offline functionality for rural areas.
- Programmability for DBT, PMGKAY, scholarships.
- Interoperability with UPI and bank accounts.
- Tiered KYC with privacy for small transactions.
- Cross-border integration via BIS mBridge.
Latest Developments (2024-26)
Updated context: RBI's wholesale CBDC (e-Rupee-W) pilot began in November 2022 in the call money market and G-sec settlement. The retail CBDC (e-Rupee-R) pilot launched in December 2022 is operational in major cities with 14+ participating banks and 5 million+ users.
By early 2025:
- Retail CBDC transactions: Over 10 lakh daily during peak pilot phases.
- Banks offering e-Rupee: SBI, HDFC, ICICI, Yes Bank, Kotak, PNB, BoB, Canara, Union, IDFC First, Axis, IndusInd, Federal, Bank of Maharashtra.
- Merchant acceptance: Integration with UPI QR codes (unified QR) for interoperability.
- Programmable features: Pilots in targeted subsidy disbursal and agriculture (farmer credit).
The Union Budget 2024-25 and 2025-26 endorsed continued CBDC expansion as part of Digital Public Infrastructure. RBI Deputy Governor T. Rabi Sankar has signalled a phased rollout with offline capability and cross-border linkages.
Globally, Atlantic Council's CBDC Tracker (2025) shows 134+ countries exploring CBDCs, representing over 98% of global GDP. BIS Project mBridge (India, UAE, China, Thailand, HK) and Project Nexus (India, Singapore, Malaysia, Philippines, Thailand) advance cross-border payments.
UPSC Relevance
GS Paper III topics directly connected: Indian economy; mobilisation of resources; banking; digital economy; cybersecurity.
GS Paper II links: governance, transparency, digital inclusion.
Possible questions:
- Discuss the rationale for Central Bank Digital Currency in India. What are its benefits and concerns?
- "CBDC must complement, not compete with, UPI in India." Critically examine.
- Examine the implications of CBDC on banking, monetary policy, and financial inclusion.
Essay and interview angles include Digital India, programmable money, cross-border payments diplomacy, and privacy-utility trade-off. Aspirants should recall e-Rupee retail/wholesale timeline, participating banks, and the RBI Act amendment.
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