The Brazilian cruzeiro was not killed by a single catastrophe; it was worn to death over two decades, and its successors were worn out after it. Between roughly 1980 and 1994 Brazil ran through six currencies — cruzeiro, cruzado, cruzado novo, cruzeiro, cruzeiro real, and finally the real — each launched with fanfare, each devoured by the same chronic inflation. The saga ended on 1 July 1994 with the real, introduced under the Plano Real of President Itamar Franco and his finance minister Fernando Henrique Cardoso, at a conversion of one real to 2,750 cruzeiros reais. Unlike the redenominations before it, this one held. The verdict is Stabilized, and the reason it earned the word is the whole point of the case.
The driver was textbook: chronic deficits financed by the central bank’s printing press, layered over an economy that had learned to index almost everything — wages, rents, contracts, savings — to yesterday’s inflation. Indexation is a brilliant survival tool for individuals and a slow poison for a currency: it bakes last month’s price rises into this month’s prices automatically, so inflation perpetuates itself even when no one wants it to. Economists called this “inertial” inflation, and it meant Brazil’s price level kept accelerating no matter how many zeros the government lopped off. By March 1990, at the worst monthly reading of the era, the national consumer-price index (INPC) rose about 82% in a single month. In the first half of 1994 prices climbed roughly 43% a month on average; in June 1994 alone the INPC rose 48.2%. Brazilians did not “spend their wages by lunch” so much as flee into anything indexed — money-market funds that repriced daily, the dollar, goods on the shelf — while the poor, who held cash, paid the tax.
What makes Brazil the showpiece of monetary cleverness is how it finally stopped. Five times since 1986 the government had tried heterodox shocks — price freezes, wage freezes, even a freeze on bank deposits — and five times inflation came roaring back the moment the controls were lifted. The Plano Real refused the freeze. Instead, in a feat of monetary theatre, the government introduced a virtual currency in March 1994: the Unidade Real de Valor, the URV. The URV did not circulate. It was a unit of account, pegged near one US dollar and re-quoted daily in cruzeiros reais, in which prices, wages, and contracts were progressively expressed. For about four months Brazilians lived in two monies at once — paying in the inflating cruzeiro real, but thinking, pricing, and bargaining in the stable URV.
When prices had been re-anchored to the URV across the economy, the trick was sprung: on 1 July 1994 the URV was simply made physical and renamed the real, at one real to one URV — that day worth 2,750 cruzeiros reais. Because everyone was already quoting in the stable unit, there was no inertial momentum left to carry the inflation forward. Monthly inflation fell from 48% in June to 7.8% in July to 1.9% in August. The real held — it remains Brazil’s currency today — because the plan also confronted the deficit and the indexation that had defeated every freeze before it, breaking the spiral at its psychological root rather than papering over it.
The Argentine austral died in 1991, killed by a law that promised every saver a dollar for every peso. Introduced on 15 June 1985 to replace the discredited peso argentino at 1,000 to 1, the austral was the latest in a long line of Argentine monies worn down by the same disease: a state that spent more than it taxed and a central bank that printed to cover the gap. It lasted barely six years. By mid-1989 the printing had tipped into outright hyperinflation, and the austral was overwhelmed; the verdict on this case — Stabilized — belongs not to the austral itself but to the regime that buried it, the 1991 Convertibility Plan, which pegged a new convertible peso to the US dollar one-to-one by act of Congress.
The mechanism was textbook deficit monetization. Successive governments ran chronic fiscal deficits and financed them through the Banco Central, which was not meaningfully insulated from the Treasury’s demands. According to the Hanke-Krus World Hyperinflation Table, Argentina’s hyperinflationary episode ran from May 1989 to March 1990, peaking at roughly 197% in a single month in July 1989 — prices more than tripling between one month’s start and the next. Annual figures convey the same horror: consumer prices rose on the order of 3,000% in 1989 and again over 2,000% in 1990. Argentines, long practised at flight from their own money, dumped australes for dollars the moment wages cleared; the poor, holding cash, paid the inflation tax in full.
What stopped it was a deliberate surrender of monetary discretion. On 27 March 1991, on the initiative of Economy Minister Domingo Cavallo under President Carlos Menem, Argentina’s Congress sanctioned Law 23,928 — the Ley de Convertibilidad del Austral. Effective 1 April 1991, it fixed the currency at 10,000 australes per US dollar and bound the central bank to back the monetary base, peso for peso, with hard reserves. On 1 January 1992 the austral was retired entirely for a new convertible peso at the same 10,000-to-1 rate, so that one peso equalled one dollar by statute.
The peg worked, and worked fast: inflation that had run in the thousands of percent fell to single digits within two years. That is why this file reads Stabilized. But the same rigidity that killed the hyperinflation became, a decade later, a straitjacket — and this is the rise of which Argentina’s 2001 convertibility collapse (see case PP-014) is the fall. The law that stabilized the austral in 1991 is the law that broke the peso in 2002. Read this dossier and PP-014 as one arc with a ten-year intermission.
The Bolivian peso died in 1985, and it died of the purest case of the disease this sub-site catalogues: a government that could not stop printing money to pay its bills. There was no war, no occupation, no broken federation — only a collapsed fiscal position, a tax system that had ceased to function, and a central bank ordered to fill the gap with freshly printed pesos bolivianos. The result, by 1985, was hyperinflation that academic accounts put at roughly 11,750% for the year (University of Chicago), with the Hanke-Krus World Hyperinflation Table fixing the monthly peak at about 183% in February 1985 — a rate at which prices doubled roughly every twenty days. The verdict is Stabilized, because the collapse was halted not gradually but almost overnight, by a single decree.
The mechanism was deficit monetization stripped to its bones. After the 1982 return to democracy, the government of Hernán Siles Zuazo inherited a debt crisis, a falling tin price, and a public sector it could not finance. Revenue collapsed — by the height of the crisis, inflation itself was eroding tax receipts faster than they could be collected, the so-called Olivera-Tanzi effect — so the deficit was covered by the Banco Central printing money. The more it printed, the faster prices rose; the faster prices rose, the less the taxes were worth; the less the taxes were worth, the more it had to print. By mid-1985 the US dollar fetched a million pesos bolivianos on the black market, wages were spent within hours of receipt, and the largest instruments in circulation were not banknotes at all but bank checks of up to 10 million pesos.
The end came with the New Economic Policy and its instrument, Supreme Decree 21060, promulgated by President Víctor Paz Estenssoro on 29 August 1985 — the case that made the young Harvard economist Jeffrey Sachs famous. The decree floated the peso (an overnight devaluation of more than 90%), slashed public spending, froze public-sector wages, lifted price controls and subsidies, and — above all — committed the government to stop financing the deficit by printing. Inflation, which had been running at thousands of percent, fell to between 10% and 20% within months.
The peso boliviano was formally retired on 1 January 1987, when a new boliviano replaced it at one million pesos to one. Because the fiscal turn behind the new money was real, the boliviano held; it remains Bolivia’s currency today. The stabilization became a landmark — proof, drawn straight from the 1920s European cases Sachs studied, that even a hyperinflation in the thousands of percent can be stopped abruptly if the government credibly stops printing.
The Peruvian inti was replaced in 1991, the casualty of an experiment in heterodox economics that ended in one of the hemisphere’s worst hyperinflations. Introduced on 1 February 1985 to replace the worn-out sol de oro at 1,000 to 1, the inti was meant to be a fresh start. Instead it became the currency of the García years — a presidency that tried to spend and price-control its way to growth, financed the attempt by printing, and watched the strategy detonate. By August 1990 monthly inflation reached roughly 397%, prices doubling about every nine days, and the inti was finished. The verdict is Replaced: the inti was swept away by the nuevo sol on 1 July 1991 at a million to one, after a stabilization so severe it earned its own name — the “Fujishock.”
The mechanism combined ordinary deficit monetization with a distinctive policy folly. President Alan García, elected in 1985, launched a heterodox program: freeze prices and the exchange rate, hold down interest rates, cap external debt service at 10% of export earnings, and prime demand with public spending to spur growth. For two years it produced a boom. Then the controls and the deficit collided with reality. Cut off from foreign credit by the debt cap, the government financed its widening gap the only way left — the central bank’s printing press — and with prices frozen below cost, shortages spread and a black market metastasized. When the dam broke, inflation ran in two waves: a first spike in September 1988 as a desperate adjustment (“the Salinazo”) let suppressed prices loose, and a second, terminal surge in 1990.
That second wave crested in August 1990, the month the newly elected Alberto Fujimori abandoned his campaign promises and imposed shock therapy. On 8 August 1990 the government raised the gasoline price roughly thirtyfold, freed controlled prices, scrapped the multiple exchange-rate system, and committed to stop financing the deficit by printing. The monthly inflation rate that month was about 397%; the brutal price adjustment was the shock itself. Stabilization followed, more gradually than Argentina’s or Bolivia’s because Peru used a monetary anchor rather than a hard peg.
The inti, by then carrying notes up to 5,000,000, was retired on 1 July 1991, replaced by the nuevo sol at one million intis to one — restoring, in name, the “sol” the inti had displaced six years earlier. The replacement held as the stabilization took, though inflation took roughly five years to settle near 10%.
The Mexican peso did not hyperinflate, but it spent the 1980s being ground down by a debt crisis and the deficit financing that came with it, and by 1987 its inflation peaked at roughly 159% for the year on the more cited estimate — about 142.8% by the official consumer-price measure. That is a severe inflation, and the figures often disagree, but it is far short of the Cagan hyperinflation threshold of 50% in a single month, which the peso never approached. The verdict is Redenominated: on 1 January 1993 the Bank of Mexico introduced the nuevo peso (new peso) at 1,000 old pesos to 1 new peso, lopping three zeros off a currency that had finally been stabilized. The largest banknote of the old peso era was the 100,000-peso note, issued in 1991.
The story begins with the 1982 debt crisis, the event that opened Latin America’s “lost decade.” Mexico had borrowed heavily abroad through the 1970s on the strength of new oil discoveries; when world interest rates spiked and oil prices fell, the country could no longer service its dollar debt, and in August 1982 it effectively declared it could not pay. The peso was devalued massively, capital fled, and the government — squeezed between collapsing revenue and a vast debt burden — covered its deficits in part by money creation. Inflation, which had run in the tens of percent, climbed into triple digits and stayed there through the middle of the decade.
The turning point was the Pacto. In December 1987, after years of orthodox austerity had failed to break the inflation, the de la Madrid government tried a heterodox approach: the Pacto de Solidaridad Económica, a negotiated social pact among government, business, and labour to coordinate wage, price, and exchange-rate restraint, anchored by fiscal tightening. The Pacto did not work instantly — inflation was still around 100% in 1988 — but, renewed and refined under President Carlos Salinas, it ground the rate down year after year into the teens and then single digits.
Only when the inflation had been tamed did Mexico touch the currency. On 1 January 1993 the nuevo peso replaced the old peso at 1,000:1, retiring the 100,000-peso notes and restoring sensible arithmetic. Old and new pesos circulated together through the mid-1990s; the “nuevo” qualifier was dropped at the start of 1996, leaving simply the peso. The redenomination was a success in its own terms — but the stability it crowned proved fragile: in December 1994 the Tequila Crisis forced another sharp devaluation, a reminder that a redenomination secures the numerals, not the value behind them.
The Chilean escudo was a Chilean currency that did not survive Chilean politics. Introduced on 1 January 1960 to lop three zeros off the chronically inflating old peso — at 1 escudo to 1,000 pesos — it was meant to be a fresh, dignified unit. Fifteen years later it was destroyed by precisely the disease it had been minted to cure, and on 29 September 1975 the military government that had seized power two years earlier retired it and brought the peso back, again at 1,000 escudos to one peso. The verdict is Replaced: not a stabilization, not a mere lopping of zeros that left the currency intact, but the abolition of one failed unit and the reintroduction of its predecessor’s name on a new, stabilizing footing.
The fatal acceleration came in the three years of the Popular Unity government of Salvador Allende, 1970–1973. The driver was textbook deficit monetization. An ambitious program of wage rises, nationalizations, and frozen prices — the plan associated with Economics Minister Pedro Vuskovic — was financed not by taxation but by the central bank’s printing press. The fiscal deficit, around 1.4% of GDP in 1970, ballooned past 20% of GDP by 1973 on some estimates and toward 30% on others; the money base grew explosively, with currency issue rising roughly 178% in 1972 and on the order of 360% in 1973. With price controls holding official prices down, shortages, queues, and a vast black market did the real pricing. When the controls cracked, the suppressed inflation surged through.
The headline numbers are contested precisely because of those controls, and the dossier states the range rather than pretending to a single truth. Annual inflation reached roughly 255% in 1972 and is most often cited at around 508% to 605% for 1973; measured at free-market rather than official prices, some authorities put the August 1973 rate above 1,500% annualized. Whatever the exact figure, this was a true extreme inflation, and the escudo — a currency whose largest note had climbed to 10,000 escudos by 1974 — had effectively ceased to store value.
The political rupture is a matter of record and is noted here soberly, because the lens of this file is monetary, not partisan. On 11 September 1973 a military coup overthrew Allende; he died that day. The fiscal and monetary collapse did not end with the change of government — inflation ran above 600% in 1974 once remaining price controls were lifted and the suppressed pressure was released, and averaged in the hundreds of percent in 1975. The escudo was beyond saving. Decree Law 1,123, published on 4 August 1975, reintroduced the peso at 1,000 escudos to one, with the escudo formally withdrawn on 29 September 1975 — the act that closes this case.
The Argentine convertibility peso is the rare Zero Hour case that died not of too much inflation but of too little flexibility. It was born as the antidote to the hyperinflation chronicled in PP-002 — the austral that disintegrated in 1989, when prices rose roughly 200% in the single month of July and around 5,000% across the year — and for a decade it worked spectacularly. Then, in January 2002, after a sovereign default and a deposit freeze that pried the country’s savings out of its own hands, the government repealed the law that had defined the currency and let the peso float. It fell from one-to-one with the US dollar to nearly four-to-one within months. The verdict is Devalued: not a hyperinflation, not a redenomination, but the collapse of a hard peg and the roughly 70–75% depreciation that followed.
The cure had been brutally simple. The Convertibility Law, which took effect on 1 April 1991 under President Carlos Menem and Economy Minister Domingo Cavallo, fixed the currency at one peso to one US dollar and required the central bank to back the monetary base substantially with dollar reserves; in 1992 the peso convertible (ARS) formally replaced the austral at 10,000 australes to one peso. The arrangement functioned as a near-currency-board: the central bank could not simply print to cover deficits, because every peso in circulation had to be answerable to a dollar in the vault. The inflation tax that had defined Argentine life for forty years was abolished by statute. Annual inflation, which had averaged some 600% from 1983 to 1991, fell to about 4.6% a year from 1992 to 1998; for a time, capital poured in and the economy boomed.
The trap was the rigidity itself. A peg that cannot move forces all adjustment onto everything else — wages, prices, employment, output. When the dollar strengthened in the late 1990s, when Brazil devalued its real in 1999, and when commodity prices sagged, Argentine exports priced in expensive dollars became uncompetitive, and a recession that began in the third quarter of 1998 ground on with no exchange-rate escape valve. The government, barred from monetizing its deficits, borrowed instead — and the debt mounted until markets stopped lending. By late 2001 the peg’s two preconditions, external financing and fiscal discipline, had both failed.
The end came in weeks. On 1 December 2001 Cavallo imposed the corralito — the “little fence” — capping bank withdrawals at 250 pesos a week to stop a run; meant to save the banks, it detonated the politics. Riots and a revolving door of presidents followed; in late December 2001 Argentina suspended payments on its sovereign debt, the largest default in history to that point (figures range from roughly US$93 billion to as much as US$132 billion depending on what is counted). In early January 2002 President Eduardo Duhalde’s government repealed the Convertibility Law and floated the peso. It overshot to nearly four per dollar by mid-2002 — devalued, not abolished, but the decade-long promise of one peso, one dollar was over.
The Ecuadorian sucre is the Zero Hour case that ended by abolishing the question. Faced with a banking collapse, a deposit freeze that locked citizens out of their own accounts, and a currency in free-fall, Ecuador did not redenominate the sucre or re-peg it; in January 2000 it gave up monetary sovereignty altogether and adopted the US dollar as legal tender. The conversion was set at 25,000 sucres to one dollar — the rate at which a 116-year-old currency, born in 1884, was retired. The verdict is Dollarized: the sucre did not survive in any form. It was exchanged for greenbacks and withdrawn from circulation, and Ecuador has used the US dollar ever since.
The collapse was a banking crisis first and a currency crisis second. Through the 1990s Ecuador carried chronic deficits and a fragile, newly liberalized financial sector; then a cluster of shocks — the 1997–98 El Niño that wrecked agriculture, the 1998 oil-price crash that gutted government revenue, and emerging-market contagion — pushed weak banks toward insolvency. As depositors fled and the state poured money into bailouts and deposit guarantees, the sucre buckled, losing roughly 67% of its foreign-exchange value over 1999 — from around 6,800 per dollar at the start of the year toward 18,000 by year-end, then plunging again at the turn of 2000.
The defining act of the crisis came on 8 March 1999, when President Jamil Mahuad declared a feriado bancario — a bank holiday — that shut the banks and was followed by a freeze on deposits, locking much of the country’s savings inside accounts for between six months and a year. The freeze stopped the immediate run but shattered confidence: a population that could not reach its own money had no reason to hold a currency it watched depreciate by the day. Money velocity collapsed into the dollar; Ecuadorians priced, saved, and increasingly transacted in greenbacks while the sucre raced toward worthlessness.
With the currency near 25,000 to the dollar and falling, Mahuad announced on 9 January 2000 that Ecuador would adopt the US dollar. The decision cost him his office within weeks — an indigenous-led uprising with military backing forced him out on 21 January — but his successor, Gustavo Noboa, carried dollarization through. The dollar became legal tender on 13 March 2000; the sucre ceased to be legal tender on 11 September 2000, redeemable at 25,000 per dollar through 30 March 2001. Inflation spiked to about 96% in 2000 as prices completed their adjustment, then fell sharply once the dollar anchor took hold. A currency that had outlived three generations was gone.