The Indonesian Rupiah — A Botched Cut, Then the New Order Did the Math

The Indonesian rupiah of the Sukarno era was not destroyed by a war or a foreign army; it was hollowed out by a government that financed its ambitions with the printing press and could not stop. By 1965 the currency had lost most of its meaning, and on 13 December 1965 President Sukarno’s government issued an entirely new rupiah, lopping three zeros off the old one at a rate of 1,000 old to 1 new. The verdict on the record is Redenominated — and, crucially, the redenomination did not work. Inflation kept climbing through 1966. What actually halted the collapse was not the new banknote but the fiscal turn that came after it, under the New Order government of General Suharto from 1966.

The driver was textbook deficit monetization. Through the years of “Guided Democracy” and the “Guided Economy” that accompanied it, Sukarno’s state spent far beyond what it could tax, and Bank Indonesia covered the gap by printing. The government’s budget deficit, measured as a share of spending, rose from 29.7% in 1961 to 38.7% in 1962, 50.8% in 1963, 58.4% in 1964, and 63.4% by 1965 — a state financing well over half its outlays with freshly created money. The bill arrived as inflation: the IMF series puts the rise at 594.3% in 1965 and a peak of 1,136.0% in 1966; other accounts cite a Jakarta cost-of-living rise of roughly 600% for 1965-66. By whichever measure, the rupiah was in true hyperinflation territory, and Indonesia’s foreign-exchange reserves had collapsed from US$326.4 million in 1960 to about US$8.6 million in 1965.

The December 1965 reform is a case study in how not to redenominate. The decree did not merely strike zeros; in its hurried implementation it behaved as a real-value cut — a sanering — and arrived with almost no preparation, into the most turbulent political weeks in the nation’s modern history. It failed to restore confidence because the thing that mattered, the deficit financed by central-bank credit, kept running. The currency had been renamed, not cured.

What changed was the government. After the political upheaval of 1965-66 — which must be noted soberly: the failed coup of 30 September 1965 and the mass killings that followed cost an estimated half a million lives or more — Sukarno’s authority drained away and General Suharto consolidated power. On 3 October 1966 the new administration, advised by a group of University of California-trained technocrats nicknamed the “Berkeley Mafia” and backed by the IMF, announced a stabilization program built on the one thing the redenomination had skipped: a balanced budget. It ended deficit money creation, controlled credit, and courted foreign aid. Inflation fell from over 1,000% to about 13% by 1969 and into single digits by 1970. The reform that held was fiscal, not nominal.

The Vietnamese Đồng — A 10-to-1 Reform That Lit a 700% Fire

The Vietnamese đồng treated here is the currency of the unified socialist republic in the mid-1980s — and this is the first point to get straight, because there are two very different stories that share a name. The 1975 abolition of the Republic of Vietnam’s đồng after the fall of Saigon, when the victors converted Southern money at confiscatory rates and wiped out Southern savings by decree, is a separate case (filed under War Chest). What follows is the later, distinct episode: the inflation that engulfed the whole country in the 1980s, born of socialist deficit financing and detonated by a botched currency reform of 14 September 1985. The verdict is Redenominated — the 1985 reform struck a zero off, at 1 new đồng for 10 old — but the redenomination did not stabilize anything. It made things catastrophically worse. The actual stabilization came from the Đổi Mới reforms launched at the end of 1986 and the monetary measures of 1989.

The driver was the command economy itself. After reunification in 1976, the unified socialist state ran chronic deficits — bled by reconstruction, collectivization, the occupation of Cambodia, the 1979 border war with China, and international isolation — and financed them by printing đồng. The 14 September 1985 reform, called gia-luong-tien (price-wage-money), was meant to drain the parallel market and tax undeclared wealth by converting old đồng into new at 10:1. Instead it shattered what confidence remained. The government failed to print enough new notes, rumours of the conversion drove the black-market rate toward 1,000 đồng per US dollar before the reform even landed, and savers were gutted. Inflation, already high, exploded: it peaked at about 700% in September 1986 by the Wikipedia figure, and official Vietnamese accounts put the end-1986 rate at 774%.

The escape was the great strategic turn of December 1986. At the Sixth National Congress of the Communist Party, Vietnam adopted Đổi Mới (“renovation”): a phased shift from rigid central planning toward a “socialist-oriented market economy.” Stabilization did not arrive instantly — inflation was still around 350% in 1988 — but the decisive monetary act came in 1989, when the authorities unified Vietnam’s multiple exchange rates at the parallel-market level and, critically, raised interest rates on đồng deposits to positive real levels, giving people a reason to hold the currency rather than flee it. Inflation collapsed from roughly 350% in 1988 to about 35% in 1989, then under 20% by 1992. The 1985 redenomination renamed the problem; Đổi Mới and the 1989 reforms solved it.