The Bretton Woods System Explained

In July 1944, while the war still burned, 730 delegates from 44 nations spent three weeks in a New Hampshire hotel and redesigned world money. The system they built ran at full strength for barely thirteen years, and its ghost still sets the rules of your wallet.

The disaster everyone remembered

To understand 1944 you need the twenty years before it. The interwar gold standard was restored badly: Britain returned in 1925 at its prewar parity · Churchill’s decision, savaged by Keynes in print, leaving sterling overvalued and British industry gasping until the peg broke in 1931. What followed was the 1930s playbook everyone in that hotel had lived through: competitive devaluations, tariff walls, capital flight, trade collapsing. The conference’s real goal was not elegance. It was: never again.

The deal: one anchor, one metal

The architecture was simple to state. The US dollar was fixed to gold at $35 per ounce; every other currency was fixed to the dollar within narrow bands of about one percent; and two new institutions, the International Monetary Fund and the World Bank, would police and lubricate the system. Less remembered: capital controls were a design feature, not a flaw. The architects deliberately caged cross-border money flows so that governments could set interest rates for domestic goals without speculators breaking the pegs. Bretton Woods was not a free-market system; it was a managed one, built by people who had watched free capital flows help burn the world down.

It anchored on America because America held the cards: the dominant industrial base and the great bulk of the world’s monetary gold. The dollar was “as good as gold” because in 1944 it very nearly was.

The duel: Keynes’s bancor versus White’s dollar

The intellectual battle deserves its fame. John Maynard Keynes, for exhausted Britain, proposed an International Clearing Union with a neutral world unit · bancor, and one radical mechanic: symmetry. Deficit countries would pay interest on their overdrafts, but persistent surplus countries would be charged too, forcing both sides of an imbalance to adjust. Harry Dexter White, for the United States, the world’s great surplus power, proposed a dollar-centred fund instead. The creditor won, as creditors do. (History’s strange footnote: postwar decrypts later implicated White in contacts with Soviet intelligence · the extent is still debated by historians. The architect of the dollar system remains its most ambiguous figure.)

Keynes lost the argument in 1944. Every debate about global imbalances since · America and China included, is the same argument, unresolved.

A system that barely existed

Here is the fact that reframes everything: the system as designed, general convertibility at fixed rates, only fully operated from 1958, when Western European currencies finally became convertible, to 1971. Thirteen years. Before that came a long dollar-shortage decade of controls and the Marshall Plan; sterling’s forced early convertibility attempt in 1947 collapsed within weeks, and the pound devalued in 1949 and again in 1967. The “golden age of Bretton Woods” was real, but the machine itself ran at full specification for barely a teenager’s lifetime.

What it felt like to live under it

Two features of that era are almost unimaginable now. First, the growth: the advanced world compounded through the 1950s and 60s at rates it has never seen since, the French still call the period the “thirty glorious years”. Second, the calm: systemic banking crises in advanced economies, a regular feature before 1939 and again after 1980, were essentially absent under the full Bretton Woods regime, a finding economists Reinhart and Rogoff document across eight centuries of data. Caged capital, boring banking, fixed rates: dull by design, and the dullness was the point. Whether the growth caused the calm or the cage caused both is one of the great open arguments in economics, but the correlation is not disputed, and it is the strongest card anyone holds in debates about financial regulation today.

The flaw with a name: Triffin’s dilemma

Economist Robert Triffin told the US Congress in 1960 why the machine must eventually seize. The world’s growing trade needed a growing supply of dollars for reserves, which America could only provide by running deficits, sending more dollars abroad than it took in. But every dollar accumulating abroad was a claim on a fixed pile of gold at $35. The system required its own overextension: supply the dollars and destroy confidence slowly, or withhold them and strangle world trade quickly.

The 1960s were the dilemma playing out in public. London’s Gold Pool (1961), central banks jointly selling gold to hold the $35 line, bled reserves until it broke in 1968, forcing a two-tier gold market: $35 for central banks, whatever-the-market-said for everyone else. France under de Gaulle, advised by Jacques Rueff, pointedly converted dollars into gold shipments and denounced America’s “exorbitant privilege”, the phrase actually minted by his finance minister Valéry Giscard d’Estaing. By the late 1960s · Vietnam, the Great Society, accelerating outflows, foreign official dollar holdings far exceeded what Fort Knox could honor.

Fifteen minutes on a Sunday night

On 15 August 1971, after a secret weekend at Camp David with roughly fifteen advisers · Paul Volcker among them · Richard Nixon announced on television that the United States would “temporarily” suspend the dollar’s convertibility into gold. The same speech imposed a 90-day wage-and-price freeze and a 10% import surcharge: the closing of the gold window was wrapped inside a package aimed squarely at domestic voters, and the stock market rose the next day. The Smithsonian Agreement that December tried to save fixed rates by devaluing gold to $38 (later $42.22); it was dead within fifteen months. By March 1973 the major currencies floated. For the first time in monetary history, the entire world ran on fiat money, backed by credibility alone. “Temporarily” is now in its sixth decade.

Living in the ruins

Yet look around: the IMF and World Bank still stand. The SDR, the IMF’s accounting asset, is bancor’s ghost, alive but never allowed to matter. Roughly three-fifths of global foreign-exchange reserves are still dollars; oil, most trade and most cross-border debt still price in dollars. The anchor role outlived the anchor. And every modern inflation fight is a Bretton Woods echo: with the metal discipline gone, the only brake on money is the judgment, and independence, of the people issuing it.