The Plaza Accord turned currency policy into a group effort
In September 1985, finance ministers and central-bank leaders from the United States, Japan, West Germany, France, and Britain met at New York’s Plaza Hotel. Their agreement, later known as the Plaza Accord, aimed to bring down a dollar that had risen sharply and was making U.S. products costly for buyers abroad. The negotiations were conducted privately, though the governments announced their agreement afterward.
The plan relied on more than a written promise. Governments could sell dollars and buy other currencies, increasing demand for those currencies. Just as important, a shared public signal told traders that major governments were prepared to push in the same direction. If investors expected the dollar to weaken, they had reason to sell it before it fell further.
Why the yen rose so sharply
A weaker dollar meant that one dollar bought fewer yen. That made Japanese goods more expensive for American customers, while U.S. goods became more affordable in Japan. The same shift helped address the trade imbalance that had helped provoke the deal—but it put pressure on Japanese exporters, whose products now cost more overseas unless they cut prices or accepted smaller profits.
The yen’s rapid rise was not an accidental side effect: a stronger yen was part of the intended adjustment. But its scale made the consequences difficult to manage. Japan responded to the economic strain with easier monetary conditions, among other measures; those conditions later helped fuel a surge in property and share prices, although the Accord alone does not explain Japan’s asset bubble.
The episode showed the reach—and the limits—of coordinated currency policy. Governments could change market expectations together, but they could not neatly control where the adjustment would land. The dollar fell, and Japan’s exporters faced the sharp cost of a yen strengthened in part by the very agreement designed to rebalance trade.
