What is Fiat Currency?
Fiat currency is government-issued money that is declared as legal tender by a central authority, such as a government or central bank (e.g., the Federal Reserve). Unlike commodity-backed money, fiat currency derives its value from public trust and official decree rather than physical assets like gold.
Core Characteristics
- Centralized Control: Issued and regulated by central banks that manage money supply and monetary policy through systems like fractional reserve banking.
- Legal Tender: Officially recognized by law as an acceptable payment method for all public and private debts.
- Managed Supply: Categorized by economists into different liquidity levels, commonly referred to as "M" classifications (e.g., M0, M1, M2).
Fiat vs. Cryptocurrency
While fiat currency relies on central monetary authorities and traditional banking intermediaries, cryptocurrency operates on a decentralized, immutable blockchain ledger. Key differences include:
- Governance: Fiat is managed by governments, whereas crypto relies on programmatic code and consensus mechanisms.
- Form: Fiat exists as physical cash and digital bank entries, while crypto is entirely digital.
- Intermediaries: Cryptocurrency enables peer-to-peer transfers, bypassing traditional banks and financial institutions to act as an alternative medium of exchange, unit of account, and store of value.