Argentine Peso

The Argentine peso is the official currency of Argentina, a large economy with one of the most troubled monetary histories in the modern world. Repeated bouts of high inflation, devaluation, and currency reform have marked the peso for generations.

The current peso dates to the early 1990s, when a convertibility plan pegged it one-to-one to the US dollar to stop hyperinflation. That peg held for about a decade before failing in the 2001 to 2002 crisis, beginning the cycle of inflation and devaluation that continues to shape the peso today.

The Central Bank of Argentina issues the peso and sets policy, though for much of recent history its independence and credibility have been weak. Persistent money printing to fund government deficits is the root cause economists point to for Argentina's chronic inflation.

Argentina has cycled through many exchange-rate regimes: a hard dollar peg, free floats, and tight currency controls. Since 2025 the peso has been managed within a crawling band, with the central bank allowing it to move gradually while easing many of the controls that had restricted access to dollars.

The peso is one of the world's starkest examples of what chronic inflation and weak monetary discipline do to a currency. Economists, students, and investors study it to understand currency crises, dollarisation, and the politics of inflation.

Argentina's repeated turns to the International Monetary Fund and its on-again, off-again currency controls make the peso a closely watched gauge of whether the country can finally stabilize. Each new plan is tested against a long history of relapse.

Argentina has lived through some of the highest inflation in the world, with annual rates at times well above 100 percent. At those speeds a peso can lose a large part of its purchasing power within a single year, which is why prices and wages chase each other upward.

The result is a society deeply adapted to inflation: many Argentines save in US dollars, spend pesos quickly, and price big items like property in dollars. It is a living illustration of what happens when people stop trusting their own currency to hold value, a pattern seen across history wherever inflation runs out of control.

The peso is quoted as the number of pesos per US dollar, and that number has risen relentlessly over the decades through repeated devaluations. From one-to-one under the 1990s convertibility plan, it has weakened to many hundreds and then over a thousand pesos per dollar in the mid-2020s.

For long stretches an official rate and a higher parallel, or unofficial, rate have existed side by side because of currency controls. The peso plays no role in global trading or reserves; it is studied far more as a cautionary tale than held as an investment.