Cash
Overview
Cash refers to physical money (banknotes and coins) issued by a central bank or government. It performs the three basic functions of money: medium of exchange, measure of value, and store of value, and is one of the most liquid assets in a modern economy. Despite the rapid spread of digital payment methods, cash remains widely used due to its anonymity, immediacy, legal tender status, and importance as a backup in disasters or system failures.
Main Content
History and Evolution of Cash
The origins of cash date back to electrum coins used in Lydia in the 7th century BCE. It has since evolved into metal coins, paper money, and banknotes, becoming legal tender exclusively issued by each country's central bank. Cash is backed by government credit, and anti-counterfeiting technologies (holograms, watermarks, special inks, etc.) have continuously advanced.
Economic Functions of Cash
1. Medium of Exchange: Cash enables the immediate exchange of goods and services. Unlike credit cards or electronic payments, cash transactions are settled instantly without requiring third-party approval or clearing.
2. Store of Value: Cash preserves value over time, though inflation reduces its real purchasing power.
3. Unit of Account: All goods and services are priced in cash units, serving as the basis for economic calculation.
4. Anonymity Guarantee: Cash transactions cannot be traced by anyone other than the parties involved, protecting privacy. This creates a tension between legitimate privacy protection and illegal money laundering.
Circulation and Management of Cash
Central banks regulate the money supply by controlling cash issuance. Cash circulates through the banking system, and soiled or damaged banknotes are withdrawn and destroyed. Some countries introduce durable materials (e.g., polymer banknotes) to extend cash lifespan. The costs of cash circulation (printing, transportation, storage, disposal) are significant, which is cited as an advantage of digital payments.
Advantages and Disadvantages of Cash Use
Advantages:
- Usable by anyone (financial accessibility)
- No need for electricity or communication infrastructure
- Personal information protection
- No debt incurred (prepaid payment)
- Operates in crisis situations (natural disasters, war)
Disadvantages:
- Risk of theft and loss
- Inefficient for large transactions
- Potential for counterfeiting
- Vulnerable to inflation
- Requires physical storage space
- Can be exploited for tax evasion and illegal transactions
Cash and Monetary Policy
Central banks manage the money supply through tools such as adjusting benchmark interest rates and open market operations. Cash is the most basic component of the money supply (M0, M1, M2, etc.). Demand for cash tends to increase during periods of economic uncertainty (liquidity preference), as cash holdings are perceived as a safe asset during economic crises.
Relationship with Digital Payments
Cash usage is declining globally, but with significant variation across countries. Sweden and Norway are approaching cashless societies, while Germany, Japan, and South Korea still have high cash usage. The COVID-19 pandemic accelerated contactless payments and digital wallets, but studies also suggested cash is hygienic, sparking debate. Central Bank Digital Currencies (CBDCs) are digital versions of cash, attempting to combine the advantages of cash (security, anonymity) with those of digital (convenience, efficiency).
Latest Trends
As of 2024-2025, the status of cash is undergoing complex changes. First, central banks worldwide are accelerating CBDC adoption. China's digital yuan (e-CNY) had over 260 million users as of 2024, and the European Central Bank (ECB) plans to introduce a digital euro after 2025. Second, despite declining cash usage, the volume of cash in circulation is actually increasing, analyzed as due to rising precautionary demand amid economic uncertainty. Third, some countries are moving to legally protect cash use. For example, France and Italy have strengthened laws prohibiting refusal of cash payments, and several U.S. states are pursuing similar legislation. Fourth, as counterfeiting technology evolves, central banks are introducing more sophisticated anti-counterfeiting measures. For instance, the UK issued a new polymer £5 note in 2024, and South Korea plans to introduce a redesigned 50,000 won note in 2025. Fifth, the spread of cryptocurrencies and stablecoins raises the possibility of cash alternatives, but volatility and regulatory issues prevent them from replacing cash yet. Finally, efforts are underway to reduce cash's environmental impact in response to climate change. Polymer banknotes are considered to have a lower environmental burden than paper banknotes due to their longer lifespan.
Related Topics
- [[Central Bank Digital Currency (CBDC)]]
- [[Monetary Economics]]
- [[Digital Payment Systems]]
- [[Monetary Policy]]
- [[Cryptocurrency]]
- [[Inflation]]
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