Total US Debt and Stock Market Valuations: Comparing 1999, 2007, and Today

The Buffett Indicator

The Ratio of Market Cap / GDP — Source: GuruFocus

The Buffett Indicator compares the total value of the U.S. stock market to GDP — how much the financial markets are valued relative to the actual output of the economy. Warren Buffett described it as "probably the best single measure of where valuations stand at any given moment."

At the dot-com peak in 1999, it reached 159%. At the peak in 2007 it stood at 118%. Today it stands at 223.6% — the highest ever recorded.

Source: LongtermTrends.net · GuruFocus · April 27, 2026

Debt Fueled Housing. Now Stock Bubble.

From 1999 to 2007, household debt almost doubled from 49% to 98% of GDP — up 100%. During the same time, the Case-Shiller Home Price Index rose 84%.¹ Government and corporate debt barely changed. The bubble was fueled by bank lending — and the ability to package and sell those loans, transferring the risk to investors.

Since 2007, U.S. government debt has doubled from 62% to 126% of GDP. Corporate debt has grown from 45% to 71%. Companies have used some of this debt to buy back stock — S&P 500 companies bought back a record $942.5 billion in 2024, directly raising share prices. Together, government and corporate debt have grown 84% since 2007 — nearly matching the Buffett Indicator's 89% rise to 223.6%.

¹ Case-Shiller National Home Price Index, FRED, Federal Reserve Bank of St. Louis

Corporations Kept More, so Government Borrowed.

Government deficits have grown in part because corporate tax rates have fallen from 48% in the 1970s to 21% today, with corporate taxes as a share of GDP dropping from roughly 4% in the 1960s to 2% now.

The tax cuts were only part of it. Labor's share of GDP peaked at around 64% in the early 1970s and has fallen to around 57% today — a shift of roughly $2.07 trillion per year from wages to capital, according to BLS data. That reduction is similar in scale to today's federal deficit of $1.9 trillion — though not directly linked.

As wage growth weakened relative to GDP, transfer payments and deficits expanded, partially offsetting the gap — and in doing so subsidized some of the shift from wages to capital — a shift that has also benefited millions through lower consumer prices, jobs tied to globalization, and rising asset values.

Labor's Share of Output Hits Record Low

Nonfarm Business Sector: Labor Share for All Workers (Index 2017=100) — In Q1 2026, labor's share of nonfarm business output fell to 54.1%, the lowest on record since data collection began in 1947. Source: U.S. Bureau of Labor Statistics via FRED®, Federal Reserve Bank of St. Louis. Shaded areas indicate U.S. recessions.

Debt Is Money

In a monetary system like ours, money is created as debt through bank lending. When a bank issues a loan, it creates a deposit for the amount of the loan — that is new money. When that loan is paid back, that money is removed from circulation.

Banks do not wait for deposits before making loans. They mark up a digital ledger. The new entry on the bank's books is simultaneously money in the borrower's account. A bank's assets are its loans. Its liabilities are depositors' accounts. If all bank loans were paid off tomorrow, deposits would vanish and the money supply would collapse — only physical currency, a fraction of what exists today, would remain.

This is why reducing debt is so difficult. As debt is paid down, the money supply contracts, spending falls, and economic activity slows. In 1929, bank failures wiped out deposits and collapsed the money supply by a third. The result was 25% unemployment and a 46% drop in GDP.

Government debt is the one exception: paying off government bonds does not destroy money; it simply transfers money to the bondholders. However, unless taxes are raised only on the wealthy and transfer payments to the middle and lower classes are maintained, reducing the government's debt means the middle class is subsidizing wealthy bondholders, foreign governments, and institutions. Meanwhile, the wealthiest Americans, who have already shifted to equities, face higher taxes and possibly lower stock prices.

US Debt by Sector — as % of GDP

Bold red = highest recorded level for that sector.

Why Inflation Does Not Reduce the Debt

Inflation can reduce the real burden of government debt — but it does little to resolve total system-wide leverage, especially private debt, which makes up the majority. The focus on inflation often serves to shift attention from the scale of the underlying debt problem.

Governments do not control inflation. Central banks do not control the money supply — they influence the price of credit. There is no lever that says inflate now. Debt across all sectors tripled in the 1980s and inflation fell. Nobody fully knows why.

But the deeper problem is that federal debt is one third of the story. Total nonfinancial debt — government, corporate, household — stands at 270% of GDP. Governments control only their slice. They cannot inflate away corporate debt or household debt. Those are private obligations between private parties.

And to grow the economy fast enough to outrun 270% of GDP in debt requires more borrowing — which adds to the debt. The ratio doesn't fall. It is being layered, not eroded.

Reagan Decade: Debt Was the Fuel

Ronald Reagan presided over the largest expansion of total U.S. debt of any post-WWII president. Government, corporate, and household debt combined grew 202% during the 1980s.

Total debt grows every decade. No exceptions. No matter who is in the White House or what the ideology. The system requires it.

Who Holds the Wealth

Total U.S. household wealth as of early 2026 is approximately $160 trillion.

• Top 1%: 30% of household wealth — roughly $48 trillion
• Top 10%: 67% — roughly $107 trillion · own 93% of all equities
• Middle 40%: 27% — largely home equity and 401ks
• Bottom 50% own effectively no stocks and no bonds

The Fed's distributional data only goes back to 1989. Saez and Zucman estimate the top 1% wealth share increased 19 points over the 1978–2012 period. In 1978 the top 1% held 11% of household wealth. Today it is 30%.

The Dotcom Comparison

At the dot-com peak in 1999, the Buffett Indicator stood at 159% — roughly half its current level of 223.6%. The S&P 500 returned approximately -3% to -4% annualized over the following decade.

Where the Numbers Stand