The Peruvian Inti — Heterodoxy’s Wreck, Swept Away by the Fujishock

Summary

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%.

Timeline

The Experiment: Heterodoxy on a Printing Press

Peru's hyperinflation was not the product of neglect but of a theory — and the theory's failure is the heart of the case. Alan García came to power in 1985 promising an alternative to orthodox austerity. His heterodox program froze prices, wages, and the exchange rate; held interest rates artificially low; and, most provocatively, capped Peru's foreign-debt service at 10% of export earnings, defying the international creditors and the IMF. The idea was to break the inflation-recession trap by reflating demand: with controls holding prices steady, public spending would mobilize idle capacity and growth would follow. For two years, dazzlingly, it seemed to work — output surged and García was popular.

The flaw was structural. The debt cap turned Peru into a pariah in credit markets, so when the deficit widened — and it widened fast, as subsidies and a fixed exchange rate bled reserves — the government had no way to finance it except by printing intis. Meanwhile, prices held below cost by decree produced exactly what such controls always produce: shortages, hoarding, and a sprawling black market in which the real prices lived. The heterodox program had suppressed the thermometer while stoking the fire. By 1988 the reserves were gone, the controls were unsustainable, and the suppressed inflation was poised to release all at once.

The Collapse: Two Waves and a Lost Currency

When the break came it came in two stages, separated by a grim interlude. The first wave arrived in September 1988, when the government, reserves exhausted, abandoned its controls in a shock adjustment that Peruvians nicknamed the Salinazo; suppressed prices leapt and monthly inflation spiked into hyperinflation territory. There followed a period of stagflation through 1989 — collapsing output alongside annual inflation in the thousands of percent — as the economy reeled, terrorist violence from Sendero Luminoso intensified the chaos, and Peruvians abandoned the inti for the dollar in any transaction that mattered.

The currency itself recorded the collapse in its denominations. The inti, launched in 1985 at notes of a few hundred, climbed through the late 1980s until the central bank was issuing 5,000,000-inti bills, the last of them printed in January 1991. Behind the swelling numerals was a population paying the inflation tax in full: workers whose intis bought less by the hour, pensioners on fixed incomes ruined, and the urban poor — least able to flee into dollars — hit hardest of all. The figure that frames the case is the August 1990 peak of roughly 397% in a single month, a rate at which a price doubled about every nine days. That month was not merely the worst of the inflation; it was the month the cure was administered, and the two facts are the same fact.

The Five Factors

Aftermath

The stabilization held, but the verdict here is Replaced rather than Stabilized because the inti did not survive its own cure — it was retired for a new unit, the nuevo sol, which inherited the stabilized economy and endures today. Inflation fell from quadruple-digit annual rates to roughly 10% over five years, slower than its neighbours', and the recovery was real: Peru rebuilt reserves, reopened to foreign credit, and put the hyperinflation behind it for good. The cost to ordinary holders had already been paid in full by 1990 — savings in intis annihilated, pensioners ruined, real wages gutted — and the Fujishock itself, by design, imposed a further brutal adjustment on a population that had little left to lose.

The episode's legacy is double-edged, like much of the Fujimori era. The monetary reform succeeded and gave Peru two decades of price stability and a respected central bank; the sol is among the more stable currencies in the region. But the shock came bundled with an authoritarian turn — the 1992 autogolpe lay just ahead — and economists still debate how much of the disinflation owed to the program's design and how much to the harsh contraction that accompanied it. The 5,000,000-inti note survives as a relic of the experiment that promised to grow Peru out of its constraints and instead printed its way into one of the worst inflations the hemisphere has recorded.

Lessons

References

• World Hyperinflations (Hanke-Krus table) Cato Institute (Hanke & Krus)
• Peruvian inti Wikipedia
• The Case of Peru (Monetary and Fiscal History) University of Chicago / Becker Friedman Institute
• Peru — Impact of the "Fujishock" Program Library of Congress Country Studies
• Lost Decade (Peru) Wikipedia