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Bretton Woods systemThe dollar gold peg that built modern money

The Bretton Woods system was an international agreement where 44 countries pegged their currencies to the US dollar, which was directly convertible to gold bullion at 35 dollars an ounce. It was the first fully negotiated global monetary order designed to prevent trade wars and competitive devaluations. The arrangement positioned the US dollar as the primary global reserve currency until the gold link broke in 1971.

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Bretton Woods system lesson Play the 60-second lessonFrom 1944, every money was tied to the dollar and the dollar to gold, until there were far too many dollars and Nixon cut the tie.

The hotel deal

In 1944, while WWII was still raging, 730 delegates met at the Mount Washington Hotel. They sought to end the currency wars that fueled the Great Depression and destabilized the world. This agreement became the Bretton Woods system.

The Gold Room at the Mount Washington Hotel features a large, oval wooden table surrounded by chairs, with a fireplace and mantelpiece in the background. This room is where the International Monetary Fund and World Bank were established.
The Gold Room at the Mount Washington Hotel features a large, oval wooden table surrounded by chairs, with a fireplace and mantelpiece in the background. Barry Livingstone, CC BY-SA 3.0, via Wikimedia Commons

The gold anchor

They pegged the US dollar to gold at 35 dollars an ounce, and every other currency to the dollar. This turned the greenback into the world's ultimate reserve asset, backed by the promise of physical metal.

A gold compartment at the Federal Reserve Bank of New York is filled with stacks of gold bars, reaching almost to the ceiling. The gold is visible through the open door of a barred vault.
A gold compartment at the Federal Reserve Bank of New York is filled with stacks of gold bars, reaching almost to the ceiling. Federal Reserve, Public domain, via Wikimedia Commons

The hidden flaw

The system relied on the Triffin dilemma. The US had to print dollars to power global trade, but every dollar printed made the gold backing seem less credible to foreign nations.

The nixon shock

By 1971, the world held more dollars than the US had gold in its vaults. President Nixon unilaterally slammed the gold window shut, ending the era of gold-backed money and ushering in our current era of fiat currency.

An aerial view of the U.S. Gold Bullion Depository at Fort Knox, Kentucky, with an UH-1 Iroquois helicopter flying overhead. The depository building is a small, fortified structure surrounded by a large, manicured lawn and security fences.
An aerial view of the U.S. John Coffman, Public domain, via Wikimedia Commons

How the system was structured

In July 1944, delegates gathered in New Hampshire to establish clear rules for postwar global finance. The United States controlled two-thirds of the world's gold at the time, allowing it to insist that the international order rely on both gold and the dollar.

John Maynard Keynes (right) and Harry Dexter White are shown conversing at the inaugural meeting of the International Monetary Fund's Board of Governors in Savannah, Georgia, on March 8, 1946. Keynes is smiling and holding a document, while White is wearing glasses and a suit.
John Maynard Keynes and Harry Dexter White, key architects of the framework, pictured at the first meeting of the International Monetary Fund's Board of Governors in 1946. International Monetary Fund, Public domain, via Wikimedia Commons

Member nations pledged to maintain exchange rates pegged to the dollar, while foreign governments and central banks could convert those dollars back into gold bullion upon request. To police these exchange rates and prevent beggar thy neighbour currency devaluations, the accords created two permanent global bodies: the International Monetary Fund (IMF) and the International Bank for Reconstruction and Development (IBRD), which is now part of the World Bank Group.

Why Bretton Woods collapsed

The system relied on a structural contradiction known as the Triffin dilemma. The US had to supply massive volumes of dollars to finance growing international trade, but issuing so many dollars meant foreign holdings soon exceeded the physical gold sitting in American reserves.

Graph showing the price of gold per troy ounce from 1914 to November 2014, with projections to 2025, in both nominal US dollars and constant September 2015 US dollars. A vertical line approximately marks the collapse of the Bretton Woods system in 1971, and horizontal lines indicate the median and 90th percentile prices in 1974 and September 2015.
A steep rise in gold prices followed the collapse of the Bretton Woods system, marking the shift away from fixed dollar-to-gold convertibility. Codehydro (Alexander Zhikun He), CC BY-SA 3.0, via Wikimedia Commons

Rapid growth in Eurodollar markets and international capital flows strained the fixed-rate rules. On 15 August 1971, the United States ended the direct convertibility of dollars into gold. This move dissolved the core mechanism of Bretton Woods, turning the US dollar into a fiat currency and leading major currencies like the British pound to adopt floating exchange rates.

Bretton Woods system Learn how the Bretton Woods system pegged global currencies to the US dollar and gold, why it collapsed in 1971, and how it shaped modern finance.

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Questions people ask

What officially replaced the Bretton Woods system?

The transition to floating exchange rates was formally ratified by the Jamaica Accords in 1976. This treaty officially closed the Bretton Woods era and codified modern floating currency arrangements.

Why did the Soviet Union reject the Bretton Woods accords?

Soviet delegates attended the 1944 conference but chose not to ratify the final agreement. They declined because they viewed the resulting financial institutions as branches of Wall Street.

What problems from the 1930s was the agreement trying to solve?

Planners wanted to prevent the destructive economic isolationism and uncoordinated currency devaluations that worsened the Great Depression. Unsettled war debts from World War I and bank failures in 1931 had frozen global commerce, convincing leaders that managed international cooperation was required.

Fiat Currency Fiat currency is money issued by a government that is not backed by gold, silver, or any other physical asset.
Central Bank A central bank is a financial institution that manages the monetary policy of a country or monetary union.
US Dollar The US dollar is the official currency of the United States and the primary currency used in global trade and finance.
Inflation Inflation is a general rise in the average price of goods and services across an entire economy.
Bretton Woods system Learn how the Bretton Woods system pegged global currencies to the US dollar and gold, why it collapsed in 1971, and how it shaped modern finance.

Part of the Set · 7 cards

Why Money Is Worth Anything

Your money isn't backed by gold. It's backed by everyone agreeing not to ask what's underneath.

  1. Barter
  2. Gold Standard
  3. Fiat Currency
  4. Central Bank
  5. US Dollar
  6. Inflation
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