Japanese Asset Price Bubble Burst (1991)

📉 Overview

Loose Monetary Policy: After the 1985 Plaza Accord, the yen appreciated, hurting exports. Japan’s central bank cut interest rates to stimulate growth.
Speculative Mania: Cheap credit fueled speculation in real estate and stocks.
Overvaluation: At its peak, Tokyo land prices were so inflated that the Imperial Palace grounds were estimated to be worth more than all the land in California.
Weak Regulation: Banks lent aggressively against inflated land values, assuming prices would never fall.
Sudden Policy Tightening: The Bank of Japan raised interest rates sharply in 1989 to cool speculation — triggering the crash.

Stock Market: Nikkei 225 fell from ~39,000 in 1989 to ~15,000 by 1992 (a ~60% drop).
Real Estate: Land values fell by 70–80% in major cities over the next decade.
Banking Crisis: Massive bad loans; banks became insolvent but delayed recognition (“zombie banks”).
Economic Stagnation: Japan entered a period of deflation, weak growth, and low consumer demand.
Lost Decade(s): From 1991–2010, Japan’s GDP growth averaged less than 1% per year.

Government Stimulus: Large public works programs to boost demand.
Monetary Easing: The Bank of Japan lowered interest rates, eventually to zero.
Bank Recapitalization: Bailouts and mergers attempted to stabilize the banking sector.
Structural Reforms: Slow deregulation and liberalization, but reform efforts were cautious and delayed.

Japan became a case study of how an asset bubble collapse + slow policy response can trap an economy in stagnation.
Popularized the concept of the “Liquidity Trap” in modern economics.
Influenced global financial thinking (e.g., US and Europe during the 2008 crisis studied Japan’s mistakes).
Japan remained a wealthy country but lost its momentum as the rising economic superpower that could rival the US.

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