Encyclopedia · Foundations
Fiat currency
Fiat currency is money that is money because the law says so. It is not redeemable for gold, silver or anything else — its value rests on confidence and on the fact that taxes and debts are settled in it.
Also called: fiat money.
Working knowledge
Every major currency today is fiat. The dollar has been since August 15, 1971, when convertibility into gold ended for foreign governments.
Fiat is not a slur and it is not a fraud. It is a design with a known weakness: the quantity is a decision, and decisions respond to pressure.
Advanced
The value of a fiat unit is anchored by demand for it — tax liabilities, contracts, debt denominated in it, and the depth of markets that use it. Those anchors are strong and they are not permanent.
Purchasing power is the honest measure. The BLS index is the standard yardstick, and it shows a large cumulative decline since 1971 in what one dollar buys.
Professional practice
Reserve status compounds the effect: foreign demand for dollar assets lets the United States run deficits at lower cost than a comparable issuer without that demand. That is a genuine advantage and a genuine dependency.
Historical fiat episodes that ended badly — assignats, the Reichsmark, more recent hyperinflations — share a pattern of fiscal need meeting monetary capacity. Pattern recognition is not prediction, and the differences matter as much as the similarities.
Where people go wrong
- Slow loss of purchasing power on cash savings held for decades.
- Assuming any hedge is guaranteed to compensate for that loss. None is.
Where informed people disagree
Fiat is manageable
Held by Central banks and most academic economists
Inflation targeting has kept most advanced-economy inflation in single digits for four decades, which is better than the record under earlier regimes.
Fiat is structurally biased toward expansion
Held by Sound-money economists
Debt service, entitlements and political incentives all push toward more money, and the accumulated debt makes a genuinely restrictive stance expensive.
Sources for this entry
- Federal Reserve History, Federal Reserve System — Gold Convertibility Ends (August 15, 1971)The Federal Reserve's own account of President Nixon's August 15, 1971 suspension of dollar convertibility into gold for foreign governments, and what followed.
- U.S. Bureau of Labor Statistics — CPI Inflation CalculatorOfficial Consumer Price Index comparisons between two dates, used for purchasing-power statements. It measures a basket average, not any one household's costs.
- FRED, Federal Reserve Bank of St. Louis — M2 Money StockThe reported level and history of the M2 money stock. It shows the quantity of money; it does not by itself establish a cause of any price change.
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Last reviewed 2026-09-14
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