The Path to 1971
On August 15, 1971, President Nixon announced that the United States would no longer redeem US dollars for gold at the fixed rate of $35 per ounce — unilaterally ending the Bretton Woods monetary system and severing humanity's last remaining direct link between paper money and gold. The decision was framed as temporary; it became permanent. Understanding the path to this moment requires understanding the structural tensions that made Bretton Woods unsustainable.
The Bretton Woods Architecture
The 1944 Bretton Woods Agreement established a dollar-centred international monetary system. The US dollar was pegged to gold at $35 per ounce, and all other currencies were pegged to the dollar at fixed exchange rates. Foreign central banks held dollars as reserve assets, convertible to gold on demand. The arrangement reflected the post-war reality: the US held approximately 70% of the world's monetary gold and was the indispensable creditor nation.
The system served its immediate purpose — providing monetary stability for post-war reconstruction. But it contained a structural flaw identified by the economist Robert Triffin in 1960 and known as the "Triffin Dilemma": for the world to have enough dollars to conduct international trade, the US had to run persistent trade deficits and export dollars. But those exported dollars were claims on US gold reserves. As the stock of foreign-held dollars grew, the ratio of dollars to gold deteriorated — the promise of convertibility became increasingly incredible.
The Accumulating Pressure
The Triffin Dilemma was a long-run problem. What accelerated the pressure was US fiscal policy in the 1960s. Johnson's guns-and-butter spending produced inflation that overvalued the dollar — making American goods expensive and foreign goods cheap, generating trade deficits and dollar outflows. Meanwhile, European economies recovered and accumulated dollar reserves that far exceeded what they would voluntarily hold at the official rate.
The crisis became explicit when foreign central banks began converting dollars to gold at increasing rates. De Gaulle's France sent a naval vessel to New York to collect gold in exchange for French dollar reserves — a dramatic assertion that France preferred gold to dollars. US gold reserves, which had been approximately $22 billion in 1950, fell to $10 billion by 1971. At the official conversion rate, outstanding foreign dollar claims vastly exceeded remaining gold reserves.
The Decision
Nixon's advisers presented him with the arithmetic in August 1971. The US could either devalue the dollar against gold (reducing the conversion rate, but acknowledging defeat and requiring international negotiation), impose capital controls, or simply close the gold window — refusing further conversions. Nixon, with characteristic directness toward political obstacles, chose the third option. The announcement was made on a Sunday evening to prevent pre-announcement market movements.
The "Nixon shock" ended the Bretton Woods system. The dollar floated; the world's monetary system became entirely fiat.