Fiat Currency and Cryptocurrency: The Changing Nature of Money

Digital Payment, Same Money

A student at a college can make payments by scanning a QR code in a canteen. He does not exchange any currency notes or coins, yet he pays in rupees. However, when it comes to cashless payments, the process doesn't change the essence of money - it is the same government issuing currency in all cases. As per the Ministry of Finance, about 241.6 billion transactions took place via UPI in India in 2025-26, so digital currency seems to be working efficiently. Cryptocurrency is different since there is no central bank or authority regulating it. Thus, what determines the acceptability of money? It all goes down to its functions: facilitating the exchange of goods, establishing a common value, and maintaining value over time. Hence, the difference between fiat and crypto currency goes beyond technology. Cash, UPI, and digital rupee are all currency forms.

How Fiat Work

Fiat money is based on a system founded on institutions. A dollar or a rupee does not give its owner the right to receive gold. Instead, its value depends on its acceptance and the state of the economy. A good part of the money in circulation today is represented by deposits. As banks generate deposits by lending money, but they have to follow certain regulations. The common belief that the government is able to print money without limits is incorrect, as money is created by banks through lending operations regulated by laws. Central banks can regulate monetary conditions using interest rates and liquidity. This means that if credit conditions are extremely tight or demand is low, the central bank may take actions to support the economy. The best thing is that the responsibility for successful actions falls on those who govern the financial instruments. The worst part is that if inflation develops, money note's denomination does not change, but it buys less. Inflation may rise when people stop trusting the government or central bank. Such situation is usually caused by political pressures and mismanagement.

Bitcoin's Answer to Trust

Bitcoin tackled the issue of trust in a different way. In the white paper dated 2008 and attributed to Satoshi Nakamoto, the proposed system would let people transfer money electronically without the assistance of a financial institution to keep the central record. The main issue it had to face was double spending: how to avoid spending the same digital currency twice. Bitcoin provides a solution using the shared history of transactions, cryptographic proof, and the proof of work system, which makes it expensive to alter an already accepted record. Individuals have the ability to verify transactions by utilizing the prevailing rules without the need to rely on the private ledger of any organization. According to the rules of Bitcoin, the supply limit stands at 21 million. Trading within this predictable limit could entice individuals who do not want to take the chance of relying on arbitrary money supply decisions. Moreover, the idea of being able to access their money and freely move it across countries is an additional benefit. When employing a self-custody wallet, a person maintains control over his or her assets without requiring any custodial entities. Being your own custodian has its own challenges, including safeguarding the private keys that allow transactions. There is also a trade-off in the fixed supply: it cannot be increased when a recession calls for more liquidity in the economy. 

When Crypto Meets Daily Life

The gap between an interesting monetary design and dependable everyday money becomes clearer at the point of spending. A shopkeeper needs to know whether today's receipts will cover tomorrow's stock. A worker needs some confidence that a month's wages will still meet essential expenses when bills arrive. Sudden changes in cryptocurrency values make it a poor fit for everyday payments, wages or savings. Custody creates another difficulty. People can avoid managing private keys by using an exchange, but doing so restores dependence on a company. The FTX fraud showed the consequences of that dependence. According to the United States Department of Justice, founder Sam Bankman-Fried diverted customer funds worth billions of dollars. A functioning blockchain could not protect customers from the misconduct of the intermediary holding their assets. Stablecoins attempt to address the price problem by targeting a reference value, often one US dollar. For tokens backed by financial reserves, however, stability depends on the quality and availability of those reserves and on reliable redemption. The Bank for International Settlements warns that stablecoins carry financial risks. If confidence drops and many holders try to cash out at the same time, trouble can follow. The dependence of stablecoins on regular currencies creates difficulties for those who claim that they might replace conventional fiat money. The key message here is to differentiate between the asset, the recording network, and the institution storing them, since each may bring its distinct risk factor.

India's Digital Rupee

India's experience suggests that the next stage of money could combine public issuance with new forms of digital access. UPI already illustrates how payment technology can improve the use of a national currency. The digital rupee, or e₹, was developed by the Reserve Bank of India, and it changes the currency itself, not just the way we pay. In a revised notice dated 1st October 2026, the RBI describes it as digital form of currency issued by the central bank. It can also be converted into currency notes. The e₹ is still being evaluated to ascertain its utilization in retail and wholesale transactions. The common UPI transaction involves the transfer of bank funds while the e₹ is stored in a digital wallet. At the point of payment the two may seem the same; however, they differ in their issuer and the nature of the claim. Other central banks are considering similar ideas, too. According to a 2024 BIS survey, 85 of the 93 central banks that responded (91%) were exploring the retail or wholesale use of CBDCs. Exploring is not the same as launching, though. A new system has to be good enough to give people benefits superior to what they have now, like UPI. It also has to deal with privacy, such as whether a digital rupee would be as private as cash, along with access and ease of use.

One Size Doesn't Fit All Money

Money comes down to a balance between convenience, power and trust. Fiat is accepted by far more people, and the institutions behind it can step in when the economy runs into trouble. They can also work to protect what people's money can buy. Cryptocurrencies brought something new: digital ownership and transfers that follow public rules. But they also brought volatility, risky custody and the question of who is accountable when things go wrong. Stablecoins and central bank digital currencies show that dividing money into traditional and digital no longer works. Different kinds of money can be used side by side, each for what it does best, and the people using them are the ones who judge how well each one works. A migrant sending money home needs the transfer to be cheap, and the family has to be able to use it safely. A small business needs payments it can count on. Whoever receives money should know which institution stands behind it. Thinking about these needs helps tell useful experiments apart from claims that technology can remove economic risk. Money will keep changing form. Its value to the public depends on whether people can use it with confidence and understand what it costs. People also need to know where to go for help when something goes wrong, such as when a payment gets stuck.

Author: Tanish Daswani

Illustration: Parth Sharma