The global financial ecosystem has been undergoing rapid shifts, with Central Bank Digital Currencies (CBDCs) emerging as a focal point. Often described as digital counterparts to sovereign currencies, CBDCs have attracted worldwide attention, prompting debates on technological feasibility, design models, policy motivations, and their broader economic implications. The Bank for International Settlements (BIS) defines CBDCs as 'a digital form of central bank money that is different from balances in traditional reserve or settlement accounts' (BIS, 2018).

Tracing the long journey of fiat-from shells to precious metals to paper money-CBDCs now represent the next phase of monetary evolution. Positioned as a novel form of fiat, they hold the potential to reshape how money is issued, transacted, and governed, extending beyond physical cash and conventional settlement systems.

Unlike traditional fiat cash, Central Bank Digital Currencies (CBDCs) offer greater flexibility and can be purpose-built for retail, wholesale, domestic, or cross-border payments at relatively low cost. They can incorporate regulatory or policy controls far more effectively than current alternatives, such as conditional transfers of grants through banks with post-hoc audits. For instance, CBDCs can restrict transactions by value, frequency, or even asset type, as seen in China, and can be programmed to allow spending only on designated goods and services, such as food, healthcare, education, transport, or taxes.

Another defining feature of CBDCs is traceability. Unlike cash, which leaves no audit trail, CBDC transactions can be monitored, enabling better oversight. While this strengthens transparency, it also raises concerns about state overreach and privacy in jurisdictions with weaker institutional accountability.

The landscape of payments is changing rapidly. In recent years, many proposals for digital money have appeared to facilitate a better alternative to cash, and a few systems are already in operation. The COVID-19 pandemic has pushed the digital use in the world in general and particularly in India. This has led to increased demand for a digital currency. A technological revolution is underway, driven by the rise of blockchain and the simultaneous development of cryptocurrencies and mobile payment systems.

Virtual cash is seen as a double-edged sword, mainly because of its fundamentally transnational character. It holds promise, as it offers efficiency gains by tapping unexplored commerce and investment avenues. The convenience of access, along with the robustness of technology, may significantly improve financial transactions. The transition also presents enormous potential in the sphere of policy. Governments have been grappling with issues like financial data security, tax evasion and money laundering, and the likelihood of disturbances in money supply and exchange rates.

In India, currency in circulation continued its upward trend, rising to approximately INR 36.88 lac crore by the end of March 2025, a 6 percent increase over the previous year and marking a recovery in the wake of the INR 2,000 note withdrawal initiative. Despite this growth, the cash-to-GDP ratio has declined from 12.5 percent in FY 23 to 11.11 percent in FY 25, underscoring the accelerating adoption of digital payments.

Regarding the INR 2,000 denomination, the Reserve Bank of India (RBI) successfully reclaimed over 98 percent of the INR 3.56 lac crore originally in circulation. As of March 31, 2025, around 98.2 percent had been returned, and by July 31, 2025, only about INR 6,017 crore remained in the hands of the public, equivalent to 98.31 percent having been phased out.

Cryptocurrencies and Money

A cryptocurrency, such as Bitcoin, is a cryptography-based software protocol that enables peer-to-peer transfer of value without the involvement of financial intermediaries like banks. For any digital asset to function as a currency or medium of payment, it requires a defined 'unit' and a transparent 'issuance' process. In cryptocurrencies, this issuance process is embedded within the protocol itself. Bitcoin, for instance, has a pre-determined issuance limit on the number of coins, though this is a design choice rather than a technical necessity. Ether, the second-largest cryptocurrency by market capitalisation, has no such ceiling. The limitation in Bitcoin's supply is not restrictive, as it can be subdivided into smaller units, the smallest being the Satoshi, where 100 million Satoshis equal one Bitcoin. For many, this finite supply is an attractive feature, contrasting with fiat currencies that states can issue without limit.
 
 
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