Japanese asset price bubble
The Japanese asset price bubble (バブル景気 baburu keiki , lit. "bubble economy") was an economic bubble in Japan from 1986 to 1991, in which real estate and stock prices were greatly inflated. The bubble's subsequent collapse lasted for more than a decade with stock prices initially bottoming in 2003, although they would descend even further amidst the global crisis in 2008. The Japanese asset price bubble contributed to what some refer to as the Lost Decade.  Some economists, such as Paul Krugman, have argued that Japan fell into a liquidity trap during these years.
In the decades following the Second World War, Japan implemented stringent tariffs and policies to encourage people to save their income. With more money in banks, loans and credit became easier to obtain, and with Japan running large trade surpluses, the yen appreciated against foreign currencies. This allowed local companies to invest in capital resources much more easily than their competitors overseas, which reduced the price of Japanese-made goods and widened the trade surplus further. And, with the yen appreciating, financial assets became very lucrative. One of the major reasons for the sudden appreciation of the yen was the Plaza Accord.
So much money readily available for investment, combined with financial deregulation, overconfidence and euphoria about the economic prospects, and monetary easing implemented by the Bank of Japan in late 1980s resulted in aggressive speculation, particularly in the Tokyo Stock Exchange and the real estate market. The Nikkei stock index hit its all-time high on December 29, 1989 when it reached an intra-day high of 38,957.44 before closing at 38,915.87. Additionally, banks granted increasingly risky loans.
Prices were highest in Tokyo's Ginza district in 1989, with choice properties fetching over 30 million yen (approximately $215,000 US dollars) per square meter ($20,000 per square foot). Prices were only marginally less in other large business districts of Tokyo. By 2004, prime "A" property in Tokyo's financial districts had slumped to less than 1 percent of its peak, and Tokyo's residential homes were less than a tenth of their peak, but still managed to be listed as the most expensive in the world until being surpassed in the late 2000s by Moscow and other cities. However, since 2012, Tokyo is once again, the world's most expensive city, followed by Osaka with Moscow as number 4. Tens of trillions of dollars worth were wiped out with the combined collapse of the Tokyo stock and real estate markets. Only in 2007 had property prices begun to rise; however, they began to fall in late 2008 due to the financial crisis.
With the economy driven by its high rates of reinvestment, this crash hit particularly hard. Investments were increasingly directed out of the country, and manufacturing firms lost some degree of their technological edge and Japanese products became less competitive overseas. The Japanese Central Bank set interest rates at approximately zero. When that failed to stop deflation some economists, such as Paul Krugman, advocated inflation targeting.
The easily obtainable credit that had helped create and engorge the real estate bubble continued to be a problem for several years to come, and as late as 1997, banks were still making loans that had a low probability of being repaid. Loan Officers and Investment staff had a hard time finding anything to invest in that would return a profit. They would sometimes resort to depositing their block of investment cash, as ordinary deposits, in a competing bank, which would bring howls of complaint from that bank's Loan Officers and Investment staff. Correcting the credit problem became even more difficult as the government began to subsidize failing banks and businesses, creating many so-called "zombie businesses". Eventually a carry trade developed in which money was borrowed from Japan, invested for returns elsewhere and then the Japanese were paid back, with a nice profit for the trader.
The time after the bubble's collapse (崩壊 hōkai ), which occurred gradually rather than catastrophically, is known as the "lost decade" (失われた十年 ushinawareta jūnen ) in Japan.
See also 
- "Japan's Bubble Economy". www.sjsu.edu. Retrieved 2009-04-20.
- According to Yahoo Finance http://finance.yahoo.com/echarts?s=^N225+Interactive#chart7:symbol=^n225;range=20080916,20090105;indicator=split+dividend+volume;charttype=line;crosshair=on;ohlcvalues=0;logscale=off
- "It's Baaack: Japan's Slump and the Return of the Liquidity Trap. Krugman, Paul; Dominquez, Kathryn; Rogoff, Kenneth; Brookings Papers on Economic Activity, Vol. 1998, No.2(1998), 137-205.".
- Bank of Japan. "Asset Price Bubble in Japan in the 1980s: Lessons for Financial and Macroeconomic Stability". Retrieved 2009-04-20.
- China seeks to learn from mistakes of 1985 Plaza Accord | The Japan Times Online
- Shapira, Phillip. Planning for Cities and Regions in Japan. Liverpool: Liberpool UP. p. 96.
- Saving Japan. Paul Krugman.
- Saxonhouse, Gary and Stern, Robert (Eds) (2004) Japan's Lost Decade: Origins, Consequences and Prospects for Recovery (World Economy Special Issues), Wiley-Blackwell, ISBN 978-1-4051-1917-7
- Wood, Christopher (2005) The Bubble Economy: Japan's Extraordinary Speculative Boom of the '80s and the Dramatic Bust of the '90s, Solstice Publishing, ISBN 978-979-3780-12-2
- Daniell, Thomas (2008) After the Crash: Architecture in Post-Bubble Japan, Princeton Architectural Press, ISBN 978-1-56898-776-7
- Core Economics animated Real Estate Rollercoaster Ride
- Shigenori Shiratsuka: PDF (263 KB) Bank of Japan Whitepaper (2003)
- Allan I. MENDELOWITZ: After the Bubble: Is Japan's Recent Past America's Future? RIETI speech summary, June 12, 2003
- Japan Ministry of Land, Infrastructure, Transport and Tourism Land Price Data
- Deloitte Report see page 10[dead link]
- Status Ireland: Japan: Property crash example (Japan Urban Land Index 1964 - 2007)