The BubbleJAPAN · 1985–2026 Reading Roomv0.2
Japanese edition ↗

Our argument / What caused the bubble to burst

Japan took the world by storm—
then fell under external pressure and the policies adopted in response

By the end of the 1980s, Japanese companies dominated the top of global market-cap rankings, and people said the land under Tokyo alone could buy the entire United States. Japan had taken the world by storm—and success went to its head.

Then the pressure came from abroad: new capital rules for banks from the Bank for International Settlements (BIS), and American demands in the U.S.–Japan Structural Impediments Initiative. The government capped real-estate lending, the Bank of Japan repeatedly raised interest rates, and a new land value tax turned merely owning land into a losing proposition. Banks could no longer lend, buyers disappeared from the land market, and prices collapsed. It was this convergence of forces that caused the bubble to burst. That is the argument of this site.

The damage ran deep, and the stagnation lasted until 2025. Stocks did not regain their 1989 level until 2024, and commercial land in Japan’s largest cities did not return to its 1985 level until 2026.

  1. 1

    Japan dominated the world

    In 1989, 32 of the world’s 50 most valuable companies were Japanese. Number one was NTT.

    Verified
  2. 2

    Then success turned into excess

    Commercial land in the six largest cities roughly quadrupled in six years. Tokyo’s land came to be worth about as much as the entire United States.

    Verified (order of magnitude)
  3. 3

    External pressure and tightening brought it down

    Under pressure from the Basel capital rules and the U.S.–Japan structural talks, a lending cap, rate hikes, and a land tax all hit at once.

    Fact + our interpretation
Exhibit A · The world’s 50 most valuable companies, end of 1989FIG. A

Vermilion squares are Japanese companies. The squares show a count, not rankings. Seven of the top ten were Japanese: NTT, the Industrial Bank of Japan, Sumitomo Bank, Fuji Bank, Dai-Ichi Kangyo Bank, Mitsubishi Bank, and Tokyo Electric Power. NTT, in first place, had a market capitalization of about $163.8 billion. Sources: Diamond Online, Tokyo Shimbun, and others.

Exhibit B · Tokyo’s land vs. the entire United States (c. 1990)FIG. B

Japan’s total is from the System of National Accounts (end of 1990). The U.S. figure applies Harvard Business Review’s 1990 estimate that Japan’s land was worth more than four times that of the entire United States. Tokyo’s figure is privately owned land in the national accounts’ breakdown by prefecture (end of 1990). We found no official total for Tokyo’s 23 wards alone.

The causal chain

From dominance to collapse, in nine steps

VerifiedCircumstantialOur interpretation
    Read the main counterargument

    Most research in economic history attributes the bubble chiefly to the long period of monetary easing in the late 1980s and to excessive land-backed lending by financial institutions. In that view, the collapse was simply a correction of prices that had risen too far, and tightening only brought it forward. Our research also found no official document showing that outside pressure directly dictated the lending cap.

    This site does not deny that domestic easing inflated the bubble. What we argue is that the trigger for the collapse, and its depth, were set by pressure from abroad and by the tightening measures piled on in quick succession in response to it.

    Check the numbers

    Move through the years and watch four indicators

    Look up stock prices, land prices, the exchange rate, and interest rates for every year from 1984 to the latest data in 2026.

    Where the numbers come from

    Figures come from the Bank of Japan, the Statistics Bureau of Japan, the Cabinet Office, the Japan Real Estate Institute, Nikkei Inc., and other sources (checked September 17, 2026). “The causal chain” distinguishes sourced facts from this site’s interpretation.

    The land price index is our own calculation. It joins the series based on March 2000 = 100 (through 2017) to the series based on March 2010 = 100 (from 2018), linking them at the March 2010 value of 76.2. The 2016 figure is back-calculated from the year-on-year change reported for 2017. Figures for 2026 are the latest available: stock prices as of the September 16 close, the exchange rate as the January–August average, land prices as of the end of March, and interest rates at their current level.

    1984 to 2026 (2026 shows the latest figures). You can also use the arrow keys to move one year at a time.

    Indicator
    Nikkei 225 in 1989 (year-end close)Primary source

    38,915.87

    Source: Nikkei Inc.
    Chart · Nikkei 225 (year-end close)FIG. 01
    Selected indicatorMilestone years

    Definitions

    Stocks = Nikkei 225 year-end close. Land = commercial land price index for the six major cities (end of March, 2000 = 100; spliced from 2018). Yen = annual average of the dollar–yen rate in Tokyo. Rates = official discount rate at year-end (the basic loan rate from 2001). Figures for 2026 are the latest available.

    1. 1985Scene I
      Sep 1985

      Trade friction leads to the Plaza Accord

      On September 22, 1985, at the Plaza Hotel in New York, the finance ministers and central bank governors of the Group of Five—Japan, the United States, Britain, West Germany, and France—agreed to bring down the overvalued dollar and began intervening in the currency markets together. Behind the move were a dollar pushed up by high U.S. interest rates and America’s “twin deficits” in its budget and its trade.

      The U.S. trade deficit in 1985 was about $148 billion, roughly a third of it with Japan. Bank of Japan data put the average rate for August, the month before the accord, at ¥237.2 to the dollar.

      Chart · How the dollar–yen rate moved around the accord (monthly average)FIG. 02

      At ¥260.34, February 1985 was the yen’s weakest month of the period. By October, the month after the accord, the rate had reached ¥214.84, and a year later, in August 1986, the yen had climbed to ¥154.11. Source: Bank of Japan Time-Series Data (dollar–yen spot rate in Tokyo at 17:00, monthly average).

    2. 1985Scene II
      1985–1987

      The strong yen hammers exports

      The monthly average rate reached ¥128.25 in December 1987 and ¥123.16 in November 1988, and around the end of the year the yen briefly traded in the ¥120s. Exporters’ margins deteriorated rapidly, and the period became known as the “strong-yen recession” (endaka fukyō).

      The U.S. deficit, however, did not shrink right away. Higher dollar prices took time to show up in export volumes, and Japan’s trade surplus with the United States actually grew in 1986. In October 1987, the United States also suffered Black Monday, when stock prices crashed.

      The yen amount you want to take home for each unit you export.

      Price in the U.S.Rough estimate

      $15,613

      Chart · Dollar price needed for the same yen revenueFIG. 03

      To keep yen revenue unchanged, the dollar price has to rise as much as the yen does. Hold the price steady instead, and yen revenue falls by the same proportion. Currency conversion fees and U.S. distribution costs are not included.

    3. 1986Scene III
      1986–1989

      Rates fall to 2.5%, making borrowing easier

      Starting in January 1986, the official discount rate was cut five times, reaching 2.5% on February 23, 1987. It stayed there for two years and three months, until May 31, 1989.

      Concern for the world economy after Black Monday helped keep the easing going, and looking back, it is widely seen as having created “excess liquidity,” with companies and financial institutions awash in cash.

      Chart · Changes in the official discount rate, 1980–1995FIG. 04
      Show every rate change
      Effective dateDiscount rate
      Difference in interest per yearSimple interest, rough estimate

      ¥25million

      The official discount rate is the rate at which the Bank of Japan lends to financial institutions, not the rate companies actually pay. To give a sense of scale, we assume company borrowing costs move by the same amount.

    4. 1986Scene IV
      1986–1990

      The belief that land prices only go up

      Zaitech—companies putting the money they raised into financial investments instead of their core businesses—spread fast, and money flooded into stocks and real estate. Because so much lending was secured by land, every rise in land prices increased the value of the collateral, which let borrowers take on even more debt.

      The commercial land price index for the six major cities rose from 128.9 at the end of March 1985 to 315.0 at the end of March 1988, a roughly 2.4-fold increase in three years.

      Chart · Collateral drives lending, and lending drives land pricesFIG. 05

      As long as land prices keep rising, this loop feeds on itself. Run it in reverse, and falling land prices leave loans short of collateral, while tighter credit and fire sales push prices down further still (Scene VIII).

    5. 1986Scene V
      Dec 1986–Feb 1991

      The bubble boom, and “Japan money”

      By the Cabinet Office’s official business-cycle dates, the expansion lasted 51 months, from December 1986 to February 1991. The commercial land price index for the six major cities peaked at 519.4 at the end of March 1991, about four times its 1985 level. The value of all land in Japan also peaked, at about ¥2,456 trillion at the end of 1990 (System of National Accounts).

      Abroad, Sony bought Columbia Pictures in 1989, and Mitsubishi Estate bought the Rockefeller Group the same year. In May 1990, a Japanese businessman bought Van Gogh’s Portrait of Dr. Gachet at auction for $82.5 million (about ¥12.5 billion).

      In 1990, Harvard Business Review reported that the theoretical value of Japan’s land had grown to more than four times that of the entire United States. At the end of 1990, privately owned land in Tokyo was worth about ¥592 trillion, roughly a quarter of Japan’s total. Apply that ratio, and the land in Tokyo alone was worth about as much as all of America (Exhibit B). We found no official total for the 23 wards on their own, but the popular saying of the day—that the land under Tokyo’s 23 wards could buy the whole United States—is broadly consistent in scale.

      Chart · Commercial land price index (March, 2000 = 100)FIG. 06
      Six major citiesNationwide
      Show the figures as a table
      Year (end of March; spliced from 2018)Six citiesNationwide
      Chart · Land area vs. land valueFIG. 07

      Squares are compared by area. Japan covers about 378,000 km² and the United States about 9.83 million km². The “about four times” valuation was a widely cited estimate at the time, not a rigorous international comparison.

      YearBuyerTargetSize
      1989SonyColumbia Pictures (U.S. film studio)Bought the shares for $3.4 billion
      1989Mitsubishi EstateRockefeller Group (owner of Rockefeller Center in New York)About ¥220 billion (Cabinet Office)
      1990Honorary chairman of Daishowa PaperVan Gogh, Portrait of Dr. Gachet$82.5 million (about ¥12.5 billion)
    6. 1989Scene VI
      1989–1991

      Graduates in demand in a cash-rich economy

      For new graduates, the job market was an extreme seller’s market. Recruit Works Institute’s ratio of job openings to applicants among university graduates hit 2.86 for the class of 1991, the highest since the survey began with the class of 1987. Companies offered about 840,000 positions for roughly 290,000 graduates seeking jobs in the private sector.

      To stop rivals from poaching the students they had offered jobs to, companies routinely whisked them away on trips or “overseas training” at company expense. These “lock-in trips” (kōsoku ryokō) were a standard recruiting tactic of the time. Plenty of people recall being taken to Hawaii, and as early as 1981 the Nihon Keizai Shimbun was already reporting on companies using training trips to keep recruits away from rivals.

      Overseas travel boomed as well. The number of Japanese traveling abroad rose 2.2-fold, from about 4.95 million in 1985 to about 11 million in 1990. People who lived through those years recall that weekend trips to Hawaii, Guam, or Saipan became fashionable. Overseas resorts are among the defining images of the bubble.

      Chart · Openings vs. job seekers, class of 1991FIG. 08

      Each square represents 10,000 people. There were nearly three openings for every job seeker. Source: Recruit Works Institute, Works Survey of Job Openings for University Graduates (via the HR Pro glossary).

      Chart · Japanese travelers going abroadFIG. 09

      The strong yen suddenly brought the rest of the world within reach, and in 1990 the number of travelers topped 10 million for the first time. The dip in 1991 coincides with the Gulf War. Source: Japan National Tourism Organization (JNTO).

    7. 1988Scene VII
      1988–1993

      Under external pressure, policy tightens on several fronts

      The Bank of Japan raised rates five times between May 1989 and August 1990, taking the official discount rate from 2.5% to 6.0%. On March 27, 1990, the Ministry of Finance issued a directive on real-estate lending known as the lending cap (sōryō kisei), which required banks to keep their property loans growing no faster than their lending overall. It stayed in force until December 1991.

      The so-called BIS rules (the Basel Accord), agreed in 1988, set international capital requirements for banks. Wariness of Japanese banks, which had expanded rapidly abroad on thin capital, is said to have been part of the background. In Japan, however, the rules did not fully apply until the end of March 1993, and they were a separate framework from the lending cap.

      Pressure came from the United States, too. In the Structural Impediments Initiative, talks that began in 1989, Washington put forward more than 200 demands. Among them was an overhaul of land taxation: Japan’s tax rules, the Americans argued, made it too easy to hold on to land and were driving prices up. The lending cap was issued while those talks were under way. And because Japanese banks were allowed to count 45% of the unrealized gains on their shareholdings as capital, every fall in stock prices cut directly into how much they could lend under the Basel rules.

      The broad outlines of the land value tax were set in the Government Tax Commission’s basic report of October 1990. The law was promulgated in May 1991 and took effect on January 1, 1992. The decision came at almost the same time that big-city land prices peaked, in March 1991. By the time the tax took effect, prices were already falling.

      Chart · The timing of the tightening, and the peaks in stocks and land (each peak = 100)FIG. 10
      Nikkei 225 (year-end)Six-city commercial land (end of March)Policy milestones

      Stocks plunged in 1990 as the rate hikes continued, and land prices turned down a little more than a year later. The land value tax and full application of the Basel rules both came after the decline had begun.

    8. 1990Scene VIII
      1990–1998

      Land prices fall, leaving banks with bad loans

      Stocks cracked first. The Nikkei 225 fell about 39% in a single year, from 38,915.87 at the end of 1989 to 23,848.71 at the end of 1990. Land followed later, starting to slide in 1991, and by 2005 commercial land in the six major cities had lost about 87% of its peak value.

      As collateral values fell below outstanding loan balances, bad loans piled up on banks’ balance sheets. Major financial failures came several years after the collapse, clustered in 1997–98.

      Chart · Stocks and land (each peak = 100)FIG. 11
      Nikkei 225 (year-end)Six-city commercial land (end of March)

      During the bubble, some lenders advanced more than the appraised value, counting on prices to keep rising.

      Collateral shortfallRough estimate

      ¥200million

      The chain of failures from late 1997LIST
      • Sanyo Securities fails, causing the first default in Japan’s interbank call market since World War II.
      • Hokkaido Takushoku Bank collapses, the first failure of a major city bank since the war.
      • Yamaichi Securities decides to shut down voluntarily.
      • The Long-Term Credit Bank of Japan and Nippon Credit Bank fail and are temporarily nationalized.
    9. 1992Scene IX
      1992–2004

      Hiring stops, and the employment ice age begins

      The ratio of job openings to applicants among university graduates fell year after year, from 2.86 for the class of 1991 to 0.99 for the class of 2000, below 1 for the first time. “Employment ice age” (shūshoku hyōgaki) won a special jury prize for coined words in Japan’s 1994 Buzzword of the Year awards, and the share of university graduates who found jobs sank to 55.1% in 2003.

      The stagnation dragged on, and the “Lost Decade” was renamed the Lost 20 Years, then the Lost 30 Years. The Nikkei did not climb above its end-1989 close until February 2024.

      Chart · Job openings per applicant, university graduates (by graduating class)FIG. 12

      Only years we could confirm in our sources are shown (no figures for the classes of 1995 and 1999). Below the 1.0 line, job seekers outnumber openings. Source: Recruit Works Institute (via WEB Rosei Jiho and HR Pro).

    10. 2026Scene X
      1991–2026

      The long stagnation extended through 2025—then signs of recovery emerged

      The lost years did not end after one decade, or even two. The Nikkei took 34 years to climb back above its end-1989 close, finally doing so in February 2024. The policy rate returned to 1% in June 2026, for the first time in 31 years. Along the way, in 2023, Germany overtook Japan in nominal GDP, pushing it down to fourth place in the world.

      The damage in the land market lasted even longer. Commercial land prices in the six major cities finally returned at the end of March 2026 to where they had stood in March 1985, yet even that is only about a quarter of the peak. Nationwide commercial land prices remain at only about 24% of their peak.

      Since 2024, though, the tide has turned. The Nikkei ended 2025 above 50,000, and in June 2026 it closed above 70,000 for the first time. On September 16 it closed at 63,923. The yen has stayed weak, averaging ¥151.50 to the dollar in 2024 and ¥158.78 from January through August 2026.

      Chart · How long it took to get backFIG. 13

      Stocks: end of 1989 to February 2024. Rates: 1995 (the year the discount rate fell below 1%) to June 2026. Commercial land in the six major cities: from the peak at the end of March 1991 to the end of March 2026 (back to its 1985 level). Nationwide, commercial land stood at about 24% of its peak at the end of March 2026.

      The latest figures2026.09
      63,923Nikkei 225 (close, September 16, 2026)
      About 1.64 times the end-1989 level
      ¥158.78Yen per dollar (January–August 2026 average)
      The 1985 average was ¥238.53
      128.9Six-city commercial land index (end of March 2026, spliced)
      Back to its March 1985 level, about 25% of the peak
      1.0%Bank of Japan policy rate (since June 2026)
      Basic loan rate: 1.25%

      Sources: Nikkei; Bank of Japan (time-series data, basic loan rate); Japan Real Estate Institute, Urban Land Price Index (releases for end of March 2017, 2018, 2026, and other years), spliced by this site.

      Chart · Stocks and land over 43 years (each bubble-era peak = 100)FIG. 14
      Nikkei 225 (year-end; 2026 as of September 16)Six-city commercial land (end of March)

    Terms worth knowing first

    Glossary

    Plaza Accord1985
    The agreement by the G5 to intervene jointly, selling dollars to correct the dollar’s excessive strength. It set off the yen’s long climb.
    Official discount rate–2006
    The base rate at which the Bank of Japan lends to financial institutions. It was then the main tool of monetary policy; today it is called the “basic discount rate and basic loan rate.”
    Strong-yen recession1985–86
    Endaka fukyō. The downturn that followed the yen’s sudden rise, as exporters’ profits deteriorated.
    Zaitech
    Corporate financial engineering: putting money raised by a company into stocks, land, and other investments in pursuit of profit, rather than into plant and equipment for its core business.
    The land myth
    Tochi shinwa. The belief, widely held in postwar Japan, that land prices never fall. It was also the premise behind lending secured by land.
    Lending cap1990–91
    Sōryō kisei. Administrative guidance issued as a Ministry of Finance directive, requiring financial institutions to keep real-estate lending growing no faster than their lending overall.
    Basel Accord (BIS rules)1988
    The international standard requiring internationally active banks to hold capital equal to at least 8% of their risk-weighted assets. Fully applied in Japan from the end of fiscal 1992.
    Land value tax1992–
    Chikazei. A national tax on landholdings, levied every year, which took effect in 1992. With land prices falling, it has been suspended since 1998.
    Non-performing loans
    Loans on which repayments have stalled and which have become hard to recover. When land pledged as collateral loses value, even less can be recovered.
    Employment ice age
    Shūshoku hyōgaki. The years after the bubble burst, when companies slashed hiring of new graduates and jobs became extremely hard to find. The term was coined by a job-listings magazine in 1992.

    Primary and reference sources

    Sources

    Checked September 17, 2026 · Most are in Japanese; English-language sources are marked (EN)

    Edition history

    Changelog

    English edition history; the Japanese edition is tracked separately
    1. EN v0.3

      Final English release pass. Removed every remaining Japanese character from the interface, added the same AI NOBORU attribution watermark used on the WASAN site, strengthened discovery metadata for search engines and AI systems, and completed one more native-English editorial check. The figures, calculations, and core argument are unchanged. Read the Japanese edition ↗

    2. EN v0.2

      Full native-English editorial pass. Removed literal or machine-like phrasing, corrected places where the English drifted from the Japanese meaning, standardized economic terminology, and aligned navigation and version labels with Japanese v0.4. Figures, calculations, and the underlying argument are unchanged. Read the Japanese edition ↗

    3. EN v0.1

      Initial English edition based on Japanese v0.3. The content and figures matched the Japanese edition, with Japanese terms romanized where useful and calculator units expressed in plain English.

    4. JA v0.3

      The Japanese edition was prepared for readers outside Japan: the earlier video-reference comparison was removed, Scene X was added, and the timeline and charts were extended through the latest 2026 figures.

    5. JA v0.2

      The Japanese edition added the site’s argument, the nine-step causal chain, evidence-strength labels, and Exhibits A and B, along with material on land-tax reform, the Basel rules, and the timing of the land value tax.

    6. JA v0.1

      First Japanese edition, covering 1985–2005 in nine scenes built on figures from primary sources. Open Japanese v0.1 ↗

    How to use this reading room

    1. Under “Pick a year,” choose a year and an indicator. The figures for that year and the chart update to match.
    2. “Read the scene for this year” takes you to the scene that covers it.
    3. “The causal chain,” near the top, labels each step by the strength of its evidence: Verified, Circumstantial, or Our interpretation.
    4. Ten scenes walk through the events and figures from 1985 to 2026, in order.

    The calculators are simple estimates meant to show how things work; they do not reflect actual loan or trade terms. Most linked sources are in Japanese; English-language sources are marked (EN).

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