400,000 Quadrillion to One: The Story of Hungary's 1946 Hyperinflation Crisis
In 1946, Hungary endured the worst hyperinflation in history as prices doubled every 15 hours. The government printed a 100 quintillion pengő note—the highest denomination ever—worth less than twenty U.S. cents, a stark lesson in how quickly money can die.

Imagine a banknote so large it has twenty zeros after the one: 100,000,000,000,000,000,000. This was the 100 quintillion pengő note issued in Hungary in July 1946. It was the highest denomination bill ever printed, yet at the time of its creation, it was worth less than twenty U.S. cents. This wasn't a flight of fancy; it was the grim reality of the most extreme hyperinflationary event in human history, a period when the very concept of money disintegrated into absurdity.
The Anatomy of a Collapse
The story of the Hungarian pengő's demise begins in the rubble of World War II. The nation was devastated, its industrial capacity shattered, and its infrastructure in ruins. Compounding this misery were the crippling war reparations demanded by the Soviet Union, which siphoned off what little production remained. With its tax base effectively gone, the Hungarian government faced a stark choice. To fund its basic operations and reparation payments, it turned to the one tool it had left: the printing press. What followed was a monetary death spiral.
Life in the Land of Zeros
The numbers are difficult to comprehend. By the summer of 1946, inflation in Hungary reached a daily rate of over 200 percent. Prices were doubling, on average, every 15 hours. The value of the pengő evaporated so quickly that workers demanded to be paid twice a day, rushing to spend their wages before they became worthless by evening. Society reverted to a primitive barter system. A sack of flour was a stable asset; a pile of cash was a decaying liability.
The government was in a constant race against its own currency, issuing ever-larger denominations. What began as the standard pengő soon required prefixes. First came the milpengő (a million pengő), followed by the b.-pengő, short for a billion-pengő, which in Hungarian usage was actually a trillion (1012) pengő.
Citizens abandoned suitcases, opting for wheelbarrows to haul the necessary cash for simple groceries. The 100 quintillion note was the final, desperate gasp in this race to add zeros, a numerical monument to economic ruin.
The Adópengő: A Desperate Gambit
In a fascinating but ultimately futile attempt to restore order, the government introduced a parallel currency in January 1946 called the adópengő, or “tax pengő.” Initially, it wasn't a physical currency but an indexed unit of account used for tax and bank payments, designed to hold its value against the daily inflation of the regular pengő. For a time, it seemed to work, creating a dual-currency system where real value was calculated in adópengő. However, the economic pressures were too great. Soon, the government began issuing adópengő notes for public circulation, and this "stable" currency was quickly dragged into the same hyperinflationary vortex, its value plummeting alongside its predecessor.
The Great Reset
The madness finally ended on August 1, 1946, with a drastic and painful stabilization program. The pengő was officially abandoned, and a new currency, the forint, was introduced. This was more than just printing new bills; it was a complete fiscal overhaul. The government implemented a strict budget, drastically improved tax collection, and, crucially, backed the new forint with Hungary's remaining gold reserves. The transition was stark. The official conversion rate set the value of the new forint against the old pengő at an astronomical figure: 1 forint was equal to 400,000 quadrillion pengő. That's a 4 followed by 29 zeros. All the banknotes in circulation, all the wheelbarrows of cash, were rendered utterly worthless overnight—officially confirming what the Hungarian people already knew.
The 1946 crisis remains a powerful, almost surreal, historical lesson. It demonstrates that money is ultimately a shared belief system. When governments shatter that belief by printing currency untethered from real economic production, its value can evaporate not over years or months, but in a matter of hours, leaving behind nothing but stacks of useless, colorful paper.