The peso is a common name for the official currency of several countries in Latin America and the Philippines. Modern pesos are distinct national currencies (for example, the Mexican, Argentine, Chilean, Colombian, Cuban, Dominican and Uruguayan pesos, and the Philippine peso) and are issued and managed by each country's central bank. Many peso currencies use the dollar sign as a symbol and are subdivided into 100 smaller units typically called centavos.
Characteristics and denominations
Most contemporary peso currencies follow a decimal system: 1 peso = 100 centavos, though the size and denominations of circulating coins and banknotes differ widely. Countries issue unique ISO currency codes (for example, MXN for the Mexican peso or PHP for the Philippine peso) to avoid confusion where the $ symbol is shared. Designs on notes and coins normally feature national leaders, historical figures, notable cultural motifs and landmarks. Monetary policy, inflation rates and exchange values vary between each peso currency.
History and origin
The word "peso" means "weight" in Spanish and traces back to silver coinage produced in Spain and its colonies. The Spanish silver coin worth eight reales was commonly called a peso, or "piece of eight," and became a widely used trade coin from roughly the 16th through the 19th centuries. The Spanish monetary tradition spread the name and concept across the Americas and the Philippine islands during the colonial era. For background on the distribution of the currency name, see countries using the peso and for origins in Spain see Spanish origin.
In the 19th century many monetary reforms changed local systems: Spain itself moved away from the historic peso in favor of the peseta during a 19th‑century reform period, and later joined the eurozone; these transitions are discussed in accounts of Spanish currency reform and the country's subsequent euro adoption.
Uses, distinctions and notable facts
Pesos serve typical national currency roles: medium of exchange, store of value and unit of account. Some pesos are freely floating on foreign-exchange markets; others have been pegged or managed at times. The shared name and common $ symbol can cause confusion in international transactions, so financial contexts generally use ISO codes or local abbreviations. The Philippine peso uniquely uses the peso sign variant "₱" as its symbol; see the Philippine currency sign at Philippine peso sign.
Although they share a common historical root, modern peso currencies are independent: their purchasing power, coinage, and monetary policy reflect national histories and economic conditions rather than a single, unified system.