Income and Wealth Are Distinct Concepts
Income is a flow - the amount entering over a defined period. Wealth is a stock - the total net assets held at a given point in time. A person earning $100,000 annually may have zero savings, while someone earning $30,000 may hold $500,000 in real estate and financial assets. Their economic security differs fundamentally.
According to Credit Suisse's Global Wealth Report 2023, the world average adult wealth is $87,489, but the median is only $8,654. This tenfold gap between mean and median reveals that wealth distribution is far more unequal than income distribution.
The Scale of Wealth Inequality - Surpassing Income Inequality
The global wealth Gini coefficient stands at 0.85, substantially exceeding the income Gini coefficient of 0.70. The top 1% holds 45.8% of total global wealth, while the bottom 50% holds just 1.2%. This disparity has widened continuously over the past two decades.
Wealth inequality exceeds income inequality because of the accumulation mechanism. Income resets annually, but wealth compounds. Piketty's proposition that r > g (the rate of return on capital exceeds the economic growth rate) demonstrates that wealth inequality expands automatically if left unchecked. Intergenerational transfer through inheritance further solidifies the gap.
Japan's Peculiarity - Real Estate-Heavy Asset Composition
Japanese household assets are approximately 35% real estate and 30% cash deposits, with equities and investment trusts comprising only about 15%. This contrasts sharply with the United States, where equities account for roughly 40%. This compositional difference shapes the nature of wealth inequality in each country.
In Japan, the single largest determinant of wealth inequality is homeownership versus renting. A person owning a central Tokyo apartment and a renter with identical income may differ by tens of millions of yen in net worth. However, real estate is illiquid and subject to price volatility, so "more assets" does not necessarily mean "more economic security."
Avoiding Confusion Between Income and Wealth in Rankings
MyRank's income ranking addresses income (flow) exclusively. A wealth (stock) ranking is not currently offered because reliable global data remain limited. Understanding this distinction matters.
Ranking highly in income does not preclude negative net worth if debts are substantial. Conversely, a middle-income ranking may coexist with top-tier wealth accumulated over decades. Accurately assessing one's economic "position" requires evaluating both income and wealth dimensions.
Global Trends in Wealth Accumulation
Over the past 20 years, total global wealth has more than tripled. However, the bulk of this increase stems from rising real estate prices and stock market appreciation, far outpacing real economic growth (GDP increase). Asset price inflation enriches those who already own assets while raising the barrier for those attempting to build wealth from scratch.
The difficulty younger generations face in wealth accumulation is not a failure of individual effort but a consequence of macroeconomic structural change. Housing price-to-income ratios have reached historic highs in many developed nations, eroding the previous generation's assumption that ordinary employment leads to homeownership. Ranking numbers reflect these structural intergenerational inequalities.