ARGENTINA 1989–1990

Argentina’s Hyperinflation: The 1989 Collapse and the Money Supply That Never Really Stopped

Reddit still jokes about Argentina’s reputation. Under a 2024 ranking of the world’s biggest money printers, one commenter summed up the country in a single line:

FIELD REPORT

“In Argentina…given that most of its problems come from printing money…Milei proposed a law which will imprison the president and the central bank president for printing money.” — u/JLZ13, r/Infographics, 2024-03-24, 9 upvotes

The joke has a real anchor. On 8 July 1989, President Raúl Alfonsín handed the sash to Carlos Menem five months before his term was due to end. Looting had spread through supermarkets in Rosario and Buenos Aires that May and June. The austral — Alfonsín’s own 1985 attempt to fix an earlier inflation problem — was collapsing in front of him, and he resigned rather than finish the term on a currency that no longer functioned.

That’s the texture behind the Argentina hyperinflation numbers everyone searches for. Here’s the number underneath it: Argentina’s money supply grew 2,235.2% in 1989, the peak year of that hyperinflation, by our own calculation from the raw IMF series. Argentina’s series runs 1960 straight through January 2026 — one of only three hyperinflation episodes in our dataset chartable from before the crisis to today without a gap.

YoY and CAGR are different metrics measured over different windows — see our methodology for how we compute both, and never quote one as the other.

Argentina hyperinflation, 1989-90: inside a series that starts thirty years earlier

Most retrospectives on this episode reconstruct it from newspaper archives and IMF country reports written after the fact. We don’t have to. Argentina’s money supply carries its own line running from 1960 straight to January 2026, so 1989 sits inside a continuous chart rather than standing alone as an anecdote.

By our own calculation from the raw series, money-supply growth ran 442.8% in 1988, then 2,235.2% in 1989, then 1,113.3% in 1990. Three straight years in four figures or near it, and 1989 the worst of them.

Those are money-supply numbers. Prices are a different statistic, and we don’t hold Argentina’s CPI. So we use somebody else’s figure and name them. Hanke and Krus, in World Hyperinflations (Cato Institute working paper, 2012; reprinted in the Routledge Handbook of Major Events in Economic History, 2013), date the episode May 1989 to March 1990. They put the worst month at July 1989, when prices rose 196.6%. That clears Cagan’s 50%-a-month threshold by a factor of four. Our 2,235.2% is not the same measurement and is not evidence for theirs.

Two currencies gave out in the run-up. The peso argentino, introduced in 1983, gave way to the austral in June 1985 at a rate of 1 austral to 1,000 pesos argentinos — Alfonsín’s own stabilization attempt. Four years later the austral was disintegrating too. It took a third currency, the peso — still in use today, launched January 1992 at 1 peso to 10,000 australes — to actually hold.

Each of those changes lopped zeros off the face value, and none of them shows up in our series as a step down. The World Bank backfill is stated in constant modern pesos across the whole 1960-2008 stretch. The growth rates above are growth, not redenomination arithmetic.

The Convertibility Plan worked, then it stopped working cleanly

Economy minister Domingo Cavallo’s currency board, launched in April 1991, pegged the peso to the US dollar 1:1 by law. Every peso in circulation had to be backed by a dollar in reserve, which removed the central bank’s room to print pesos to cover the deficit. Growth fell hard and fast in our own series: 141.3% in 1991, 62.5% in 1992, 46.5% in 1993, 17.6% in 1994.

It did not keep falling in a straight line. Money-supply growth turned negative in 1995 (-2.8%), as Mexico’s Tequila crisis drained deposits from Argentine banks. Then it reaccelerated: 18.8% in 1996, 25.5% in 1997 — inside a currency board that was, on paper, still holding at 1:1. Growth cooled again only after that, down to 10.5% (1998), 4.1% (1999) and 1.5% (2000). Any account of the 1990s that draws a smooth line from the 1991 peg down to 2000’s low single digits is skipping the mid-decade reacceleration our own data shows.

What the peg didn’t fix

The currency board stopped the central bank from printing pesos. It didn’t stop the government from running a deficit — it just removed the easiest way to finance one.

By December 2001, the deficit had outrun what the board could absorb. Depositors, sensing the peg wouldn’t hold, pulled money out of the banking system, and the government froze accounts with the corralito. Money supply fell 19.4% in our series that year — the sharpest one-year contraction we hold for Argentina. We checked that rather than assert it: every annual step from 1961 to 2008, then every rolling 12-month change in the monthly data since. The next-worst reading is 1995, at −2.8%. Argentina defaulted on its sovereign debt in January 2002 and floated the peso, which devalued from parity to roughly 3-to-1 against the dollar within months. Money supply rose 19.7% in 2002 as that devaluation worked through the system.

The peg had ended the Argentina hyperinflation eleven years earlier. It never removed the underlying habit of financing government spending with new pesos — it only made that habit illegal for as long as the 1:1 law held. Once the law broke, the habit came back with it.

2010 to today: the number that makes Argentina the outlier

From December 2010 to January 2026, Argentina’s peso money supply grew 514.60-fold, by our own calculation from the raw series. Both ends of that window are IMF monthly observations. Argentina’s series changes source at January 2010, and we start the count eleven months clear of that seam, so the multiple measures the economy rather than the handover between two sources. That run puts Argentina’s 10-year CAGR at 62.8% as of January 2026. Across our full 185-country dataset, only two run faster: Zimbabwe at 338.2% (2026-04), annualised over the 47 months since its 2022 redenomination rather than a decade, and South Sudan at 69.6% (2026-06) — whose own series only starts in 2011, the year it became a country. Among every series that runs back to 1960 without a gap, Argentina’s 62.8% is the fastest we hold. Argentina’s year-on-year growth sits at 40.2% for the same month, with a doubling time of 1.4 years.

A 1.4-year doubling time is abstract until it sits next to a paycheck. At that rate, 100,000 pesos held in cash and earning nothing loses roughly half its share of the total pesos in circulation in about 17 months — not from a single crisis, but from the ordinary pace of the last decade. That’s not hyperinflation by Cagan’s price-based definition; we don’t hold Argentina’s current CPI series, and 40% a year, however high, is a different order of magnitude from 50% a month sustained. It is, by a wide margin, the fastest ordinary monetary expansion in our dataset outside the handful of active or recent crisis cases — see every country ranked by the same growth rate on our money-supply growth ranking, and how Argentina’s pace compares to Türkiye’s on our Turkey vs. Argentina page.

Argentina is one of four endings charted end-to-end in how hyperinflation actually ends — alongside Zimbabwe’s 2009 dollarization, Brazil’s 1994 Real Plan and Peru’s 1990-91 Fujishock. Argentina’s own full monthly history sits on our country page.

FAQ