Bretton Woods System
What is Bretton Woods System?
Bretton Woods was the post-WWII system of fixed exchange rates pegged to the U.S. dollar, which was convertible to gold.
Established in 1944, it created the IMF and World Bank and stabilized global trade. It collapsed in 1971 when the U.S. ended dollar-gold convertibility, ushering in today's floating exchange rates.
Bretton Woods System: a worked example
The strain that ended the system shows up in a coverage ratio. Suppose the anchor country promises foreign central banks gold at 40 dollars an ounce and holds 300 million ounces, worth 300 million times 40, or 12 billion dollars. Early on, foreign official dollar holdings total 9 billion, so gold covers 12 divided by 9, roughly 133 percent of the claims, and the promise is entirely credible. World trade then expands and other countries accumulate dollars as reserves until official claims reach 30 billion. Coverage falls to 12 divided by 30, or 40 percent. Nothing has gone wrong inside the anchor economy, yet every foreign holder now knows the vault cannot satisfy everyone at once, so the rational move is to redeem first. The run forces the anchor country to suspend convertibility. Supplying the world with reserves and staying fully convertible were incompatible, a bind known as the Triffin dilemma.
The mistake students make with bretton woods system
Students read the collapse as the anchor country simply running out of gold. Coverage in the example above still stands at 40 percent when the promise breaks. A convertibility pledge fails the moment credible claims exceed reserves, because each holder wants to redeem before the vault empties, and suspending conversion is what stops the queue. A second slip treats a fixed peg as a fixed real exchange rate. When the anchor economy inflates faster than its partners, the nominal rate holds while its goods grow expensive abroad, and the imbalance builds until the parity itself has to move.
Bretton Woods System questions
Why did the Bretton Woods system collapse?
Demand for dollar reserves outgrew the anchor country's gold holdings. As world trade expanded, foreign central banks accumulated dollar claims far beyond the gold available to back them, so the convertibility promise stopped being believable. Rising spending and inflation in the anchor economy made holders keener to redeem, redemptions accelerated, and the government finally suspended conversion into gold. Once the anchor floated, every currency pegged to it had nothing fixed left to hold on to, and major rates began floating.
What replaced the Bretton Woods system?
Floating and managed exchange rates replaced the pegs. Major currencies now trade at rates set largely by supply and demand in foreign exchange markets, with central banks intervening or adjusting policy rates when they want to steer the outcome. Smaller economies often still peg to a large currency or adopt one outright. The International Monetary Fund and the World Bank survived the collapse, the Fund shifting toward crisis lending and surveillance, the Bank toward development finance.
How was Bretton Woods different from the classical gold standard?
Bretton Woods pegged member currencies to the dollar and pegged only the dollar to gold, and that conversion was open to foreign governments and central banks rather than to households, which is why the arrangement is called a gold exchange standard. Members could also devalue once an imbalance turned chronic, an escape hatch the older system lacked. Under the classical arrangement every participating currency converted directly into gold and adjustment fell on domestic prices and wages with far less flexibility.
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