Floating exchange rate
Family IX · Macro
Not to be confused with inflation rate, interest rate, interest rate decision.
Floating exchange rate describes a currency whose external value is set by trading in the foreign exchange market rather than by official decree. The central bank does not commit to a particular level or band, though it may intervene from time to time to smooth disorderly moves. Most major currencies, including the US dollar, euro, yen and pound sterling, operate under some form of floating arrangement.
How the rate is determined
Under a float, the exchange rate is the price at which the supply of and demand for a currency meet. Demand comes from exports, investment inflows, tourism and reserve diversification; supply comes from imports, outbound investment and conversion out of the currency. When demand rises relative to supply, the currency appreciates; when supply exceeds demand, it depreciates.
Central banks may still hold foreign exchange reserves and intervene, but intervention is discretionary and does not define a fixed parity. The distinction between a float and a peg is therefore about commitment, not about the absence of any official activity.
Worked example
Variants and limits
Few currencies float perfectly freely. Arrangements range from a free float, where intervention is rare, to a managed float, where the central bank leans against movements without announcing a target. A crawling band or a pegged-but-adjustable regime sits closer to a fixed system.
- Free float: value set almost entirely by the market.
- Managed float: market-set, with occasional official smoothing.
- Peg or band: an explicit target, which is not a float.
The classification a country receives can change over time and may differ between agencies that publish regime taxonomies.
Often confused with
- inflation rate
- The inflation rate measures the pace of change in consumer prices within an economy, whereas a floating exchange rate is a price of one currency in terms of another; the visible sign is that inflation is quoted as a percentage change in a price index, not as a currency pair.
- interest rate
- An interest rate is the cost of borrowing or the return on lending set in money markets, while a floating exchange rate is the relative price of two currencies; the visible sign is that an interest rate appears as an annual percentage, not as a quoted exchange ratio.
- interest rate decision
- An interest rate decision is a discrete policy announcement by a central bank committee, whereas a floating exchange rate is a continuously traded market price; the visible sign is that the decision has a scheduled date and a stated target level, while the exchange rate changes minute by minute.