In 1923 the German papiermark became the most famous worthless currency in history. Within a single year the unit that had traded at about 4.2 marks to the US dollar before the First World War fell to roughly 4.2 trillion to the dollar, and the Reichsbank ended up printing a banknote denominated at one hundred trillion marks. The collapse ended on 15 November 1923, when a new currency — the Rentenmark — was issued at the deliberately humiliating rate of one Rentenmark to one trillion old paper marks, and the mark was re-stabilized at the prewar parity of 4.2 to the dollar, now carrying twelve additional zeros’ worth of erased savings.
The cause was not mysterious, and that is the point. Germany had financed the First World War almost entirely on credit, suspending the mark’s gold backing in 1914 and betting that the defeated enemy would pay the bill. Germany lost. The Treaty of Versailles (1919) and the London Schedule of Payments (1921) instead handed Germany a reparations obligation of 132 billion gold marks, and the government — unwilling or unable to cover its deficits with taxes — kept the printing presses running. When France and Belgium occupied the industrial Ruhr in January 1923 to extract reparations by force, Berlin funded a national strike of “passive resistance” the only way it knew how: by printing more money. That converted a fiscal problem into a catastrophe.
At the peak, in October 1923, prices rose at roughly 29,500% per month and doubled every few days. Workers were paid twice daily and ran to spend their wages before lunch made them worthless; banknotes were used as wallpaper, kindling, and children’s playthings because the paper was worth more than the number on it. The savings of an entire middle class — bondholders, pensioners, anyone who had trusted the mark — were annihilated, while debtors and holders of hard assets walked away enriched.
What stopped it was credibility, not collateral. The Rentenmark was notionally “backed” by a mortgage on German land and industry, a backing that could never have been redeemed; it held because it came with a believable promise to stop printing, a fixed quantity, and — in 1924 — the gold-backed Reichsmark and the American loans of the Dawes Plan behind it. The episode burned a fear of inflation into German policy so deep that it still shapes European central banking a century later.
In July 1946 the Hungarian pengő achieved a record no currency before or since has matched: a monthly inflation rate of roughly 41.9 quadrillion percent — 4.19 × 10¹⁶ percent — which the Guinness World Records office and the Hanke-Krus World Hyperinflation Table both certify as the highest ever measured. At that pace prices doubled about every 15 hours and the pengő shed 90 percent of its value roughly every four days. The episode ended on 1 August 1946, when Hungary replaced the pengő with a new currency, the forint, at the almost incomprehensible rate of 400 octillion pengő — 4 × 10²⁹ — to a single forint.
The pengő had once been a model of stability. Introduced in 1927 to retire Hungary’s earlier post-Habsburg hyperinflation (the korona), it was for a decade one of central Europe’s most dependable units. The Second World War destroyed that. Hungary entered the war on the Axis side, became a battleground as the Red Army drove the Wehrmacht west in 1944–45, and emerged with an estimated 40 percent of its national wealth ruined or carried off. On top of that ruin came the bill: the armistice and the 1947 peace settlement obliged Hungary to pay 300 million US dollars in reparations, chiefly to the Soviet Union, plus the running cost of supplying occupying Soviet forces. A wrecked economy with almost no tax base was ordered to produce hard value it did not have, and the provisional government did the only thing it could — it printed.
What followed was not a slow slide but a vertical drop. By mid-1946 the pengő was being issued in denominations that had to invent new prefixes — the milpengő (a million pengő) and the bilpengő or B-pengő (a million milpengő, 10¹² pengő) — and the largest note actually put into circulation read 100 million B-pengő, that is 10²⁰, one hundred quintillion pengő. A note for one billion B-pengő (10²¹) was printed but never released because the currency died first. To run the tax and accounting system at all, the state ran a parallel inflation-indexed unit, the adópengő (“tax pengő”), recalculated daily; by 31 July 1946 a single adópengő was worth 2 × 10²⁹ ordinary pengő.
The cure was a deliberate, foreign-supported reset. The forint was launched against a backstop of gold and foreign exchange — much of it Hungarian gold reserves returned from the West — and a hard commitment to balance the budget and stop monetizing the deficit. It worked, and it held: the forint that replaced the most worthless money in history is still Hungary’s currency today.
The Greek drachma was destroyed not to finance a war Greece chose to fight, but to pay for its own occupation. Between April 1941 and October 1944, German, Italian, and Bulgarian forces occupied the country and extracted “occupation costs” — funds to billet, feed, and supply their armies, plus forced loans the occupiers never intended to repay. With taxation impossible, exports requisitioned, and the economy in ruins, the Bank of Greece was made to cover those demands the only way left to it: by printing drachmae without limit. By October 1944, as German forces withdrew and the Greek government returned to Athens, monthly inflation reached roughly 13,800 percent — prices doubling about every four and a half days — a rate the Hanke-Krus World Hyperinflation Table ranks among the worst ever recorded. The largest banknote issued read 100,000,000,000,000 — one hundred trillion — drachmae.
The mechanism was brutally direct. The occupiers presented their bills; the Bank of Greece printed to meet them. The note circulation rose by a factor in the hundreds of millions over the occupation, while the real economy contracted. Money lost meaning so completely that Greeks abandoned the drachma in daily life altogether, pricing goods in gold sovereigns, olive oil, and British military scrip — anything that held value when the national currency would not.
Before the hyperinflation reached its peak, the occupation produced a catastrophe that dwarfs any monetary statistic. Requisitions of food by the occupying armies, combined with the Allied naval blockade and the collapse of distribution, caused the Great Famine of the winter of 1941–42. An estimated 300,000 Greeks died of starvation and malnutrition over the occupation, the worst of it in Athens and Piraeus, where the dead were collected from the streets each morning. The currency’s destruction and the famine shared the same root — an occupation that took what it wanted and left a population to absorb the loss.
The end came in stages. On 11 November 1944, just weeks after liberation, a stabilization led by the British adviser Sir David Waley introduced a new drachma at 50,000,000,000 — fifty billion — old drachmae to one new. That first reform failed to hold; inflation persisted, and a second, lasting stabilization came only with the 1953–54 reform, when Greece joined the Bretton Woods system and issued a further new drachma at 1,000:1. The drachma survived to become Greece’s currency until the euro.
China’s gold yuan is the rare hyperinflation that was itself a hyperinflation cure — and one that failed faster than the disease it was meant to treat. By the summer of 1948 the Nationalist government’s existing currency, the fabi, had been printed into ruin by a decade of war: first the war against Japan (1937–45), then the civil war against the Communists. On 19 August 1948 the government of Chiang Kai-shek scrapped the fabi and issued the gold yuan at 3 million fabi to one, paired with price controls and a confiscation order requiring citizens to surrender their gold, silver, and foreign currency in exchange for the new notes. Within ten months the gold yuan had collapsed; in Shanghai, wholesale-price inflation peaked at roughly 5,070 percent per month in April 1949, by the Hanke-Krus measure, and the largest note in general issue read one million gold yuan. After the Communist victory the currency was superseded by the renminbi of the new People’s Bank of China, with the gold yuan converted out at 100,000 to one.
The mechanism that destroyed the fabi was straightforward war finance. The Nationalist state could not tax enough to fund its armies through eight years against Japan and the civil war that followed, so it covered the deficit by printing. The “gold yuan” reform did nothing to change that — despite its name it was not backed by gold — and so it inherited the same engine of deficit monetization while adding a fresh injury. The confiscation clause compelled ordinary Chinese to hand over their real wealth, their gold and silver and foreign exchange, for paper that the government then proceeded to print into worthlessness. Those who complied were ruined; those who hoarded their metal were spared.
The reform’s brief, brutal arc is best remembered through its enforcement. In Shanghai the operation was driven by Chiang Ching-kuo, the Generalissimo’s son, in a high-pressure campaign — the “tiger-beating” drive — that arrested speculators and hoarders to prop up confidence in the new money. It held for a matter of weeks. By late 1948 the price controls broke, goods vanished from shelves, and the gold yuan began the same vertical descent the fabi had taken. The new notes climbed through the thousands, ten-thousands, and hundred-thousands within months of issue.
By the time the People’s Liberation Army took the great cities in 1949, the gold yuan was finished as money. The People’s Bank of China, founded on 1 December 1948 and already issuing the renminbi across liberated areas, retired the gold yuan and unified the country’s chaotic currencies under the new unit — the money that anchors China to this day.
The Soviet sovznak — the “Soviet token” ruble printed by the Bolshevik state from 1919 — was destroyed by the Russian Civil War and the doctrine of war communism, and it was retired in 1924 by the gold-backed chervonets and a hard monetary reform. It is the rare hyperinflation whose architects, for a while, regarded the collapse as a feature rather than a failure. As the presses devoured the value of money, leading Bolsheviks welcomed the prospect of a moneyless economy; war communism spawned, in one historian’s phrase, “fantasies of a moneyless economy,” and the runaway emission was read by some as the death of capitalism’s most basic instrument.
The mechanism was the oldest one in the book. Between 1918 and 1921 the new state fought a civil war against the Whites and foreign interventionists, requisitioned grain, abolished much of normal trade, and met its expenses by the limitless issue of paper. Industrial production collapsed by roughly 85% by 1920, the tax system disintegrated, and the only thriving enterprise — as the joke ran — was the manufacture of banknotes. Prices climbed by factors that defy intuition: by late 1923 the price level stood at hundreds of millions of times its 1913 base, and the government redenominated the currency twice (a new ruble for 10,000 old on 1 January 1922, then another for 100 on 1 January 1923) just to keep the arithmetic of daily life manageable.
By the measured peak in February 1924, consumer prices were rising at roughly 212% a month — prices doubling about every 18 to 19 days, per the Hanke-Krus World Hyperinflation Table — and the largest sovznak-era notes ran to 10 million rubles. What ended it was a deliberate reversal of doctrine. Under the New Economic Policy, a Sovnarkom decree of 11 October 1922 created the chervonets, a gold-backed bank note equal to the prewar 10-ruble gold coin (7.74232 grams of fine gold), at least a quarter of it covered by metal and hard currency. The chervonets circulated alongside the dying sovznak through 1923; in February 1924 it became the sole currency, and the government bought up the remaining sovznaks between 7 March and 10 May 1924 at a ratio of one gold ruble to 50,000 of the 1923 notes — and 50 billion of the original 1922-series rubles.
The reform held because it abandoned the fantasy. The “death of money” had not built socialism; it had paralysed an economy that still needed to count, trade, and save. The chervonets restored a unit people would hold, and the Soviet ruble that grew out of it lasted until 1947.
The Polish marka, the first currency of a nation reconstituted in 1918 after more than a century of partition, was destroyed by war finance and chronic deficits, and it was retired in 1924 by Władysław Grabski’s reform and the gold-backed złoty. Poland came into being broke. It had been carved out of the wreckage of three empires, its territory fought over and its industry shattered, and almost at once it had to defend its frontiers — most consequentially against Soviet Russia in the Polish–Soviet War of 1919–21. With no functioning tax base and a treasury that could not borrow at home or abroad on workable terms, the young state covered its deficits the way young broke states usually do: it printed marki.
The print run never stopped, and by the middle of 1923 ordinary inflation tipped into hyperinflation, with monthly price rises exceeding 50%. The peak came in October 1923, at roughly 275% a month on the Hanke-Krus World Hyperinflation Table. The collapse of the exchange rate tells the story in miniature: the marka traded at about 90 to the US dollar in 1919, around 17,800 by the end of 1922, and roughly 5,000,000 to the dollar by November 1923, climbing toward 9,300,000 by January 1924. The largest notes the state ever printed reached 10 million marek.
What stopped it was a reform of unusual self-reliance. In December 1923 the economist Władysław Grabski became prime minister while keeping the treasury portfolio, and in January 1924 the Sejm passed his currency-and-treasury reform. He balanced the budget largely through a property levy rather than the foreign loans he feared would buy political strings, founded the Bank of Poland (Bank Polski) as a joint-stock company meant to be independent of the treasury, and replaced the marka with the gold-based złoty at 1,800,000 marek to 1 złoty. The new unit was pegged at par with the Swiss franc. The currency was reborn alongside the nation’s solvency, and the złoty — battered and reformed many times since — is Poland’s money to this day.
The Nicaraguan córdoba died in stages between 1988 and 1991, killed by a decade of war finance and a command economy run on the printing press, and was finally replaced by the gold córdoba — the córdoba oro — under the stabilization that Violeta Barrios de Chamorro’s government drove through in 1991. By the Hanke-Krus World Hyperinflation Table, the episode ran from June 1986 to March 1991 and peaked at roughly 261% per month in March 1991, prices doubling in under two weeks at the worst. In annual terms the numbers are still more lurid: Encyclopaedia Britannica records an inflation rate of “more than 30,000 percent in 1988,” and several accounts put the twelve months from January 1988 to January 1989 above 40,000%.
The cause was a government that had two expensive commitments and no honest way to pay for either. The Sandinista National Liberation Front, in power from 1979, was simultaneously building a socialist command economy — nationalized firms, subsidized staples, a swollen state payroll — and fighting the Contras, the US-backed counter-revolutionaries whose insurgency from 1981 onward consumed a punishing share of the budget. A 1985 United States trade embargo choked the economy further. After 1985, with revenues falling and military spending climbing, the government covered the gap the only way it could: it printed córdobas.
Day to day, the money simply stopped working. The central bank overprinted old plates with ever-larger numbers and then issued fresh notes up to ten million córdobas. A first reform in February 1988 lopped three zeros (a second córdoba at 1,000 to 1) and bolted on price controls; within months Hurricane Joan and renewed spending blew the program apart. The real fix came under Chamorro, who took office in April 1990 after defeating Daniel Ortega at the ballot box. Her government launched the córdoba oro — a new unit pegged at par to the US dollar — phased it in through 1990, devalued and consolidated in a March 1991 shock plan, and on 30 April 1991 made the córdoba oro the sole legal tender, retiring the old córdoba at five million to one.
The reform held because it came with the things printing could not fake: an end to the war, fiscal austerity, more than US$300 million in American aid, and IMF backing. Inflation fell to roughly 13% in 1991 and into single digits after. The córdoba oro is still Nicaragua’s money today.
The old Taiwan dollar died on 15 June 1949, replaced by the New Taiwan dollar at the deliberately punishing rate of forty thousand old to one, as the Chinese Nationalist government lost the mainland and fell back on the island it had ruled for only four years. The old dollar was not destroyed by a war fought on Taiwan; it was wrecked by the war’s financial backwash — the collapse of the mainland’s gold yuan, the cost of arming and feeding a retreating army, and the simple fact that an island currency could not insulate itself from the disintegrating finances of the regime that issued it.
The old Taiwan dollar had circulated only since 1946, issued by the Bank of Taiwan after the island passed from Japanese to Chinese rule at the end of the Second World War. Two pressures then bore down on it. The first was inherited: the Japanese colonial administration had over-issued notes to fund its war effort, leaving a monetary overhang that exploded once wartime price controls lapsed. The second was imported: on the mainland, the Nationalists were financing the civil war against the Communists by printing the fabi and then, after the catastrophic August 1948 “gold yuan” reform, printing that too into worthlessness. Kuomintang military spending and budget deficits drained Taiwan’s resources into the mainland war, and the island’s prices soared.
By 1948 the Bank of Taiwan was printing 10,000-dollar notes and issuing bearer’s cheques denominated at one million Taiwan dollars; at the height of the inflation a kilogram of rice cost around 1.6 million old dollars and a single duck egg some 5,000. The old dollar fell faster the closer the mainland came to total Nationalist defeat, which arrived with the Communist victory and the Nationalist evacuation in December 1949.
The reform that retired it was engineered for credibility. The New Taiwan dollar, launched on 15 June 1949 by the Taiwan Provincial Government, was backed by gold and silver that Chiang Kai-shek’s government had shipped from the mainland — reported at some 800,000 taels of gold plus US$10 million and over ten million silver dollars — and its issuance was capped at NT$200 million. Provincial governor Chen Cheng made the new notes convertible into physical gold. The peg and the reserve, reinforced by American aid after the Korean War broke out in 1950, held the New Taiwan dollar, which remains Taiwan’s currency to this day.