Case Study: The Plaza Accord and Coordinated Currency Intervention

On 22 September 1985 the finance ministers and central bank governors of the United States, Japan, West Germany, France and the United Kingdom met at the Plaza Hotel in New York and announced that the dollar was too strong. Within two years the yen had roughly doubled against the dollar. The Plaza Accord remains the most famous example of governments coordinating to move a currency on purpose, and it is still invoked every time Washington complains about a strong dollar or a trading partner's exchange rate. This case study takes the episode apart the way a top-down investor or a fund manager should. It starts with the superdollar of 1980 to 1985: Volcker's interest rates, Reagan's deficits and the protectionist pressure building in Congress. It then goes inside the meeting itself, reads what was actually agreed, and explains the mechanics of coordinated intervention, sterilised and unsterilised, and why the signalling channel mattered more than the money spent. It follows the aftermath through the yen's overshoot, the Louvre Accord, Black Monday and the slow response of the US trade deficit, then traces the long shadow over Japan: endaka, the Bank of Japan's easing, the bubble economy and the lost decade debate. It closes with what all of this means for Indian investors: how the RBI manages the rupee and its reserves, how US currency monitoring and talk of a new accord could affect India, and a practical checklist for reading intervention signals in your own macro work.