Not All Wealth Is Created Equal

Chief Economist Eugenio J. Alemán discusses current economic conditions.

Total net worth, or household wealth, has reached a new record high, at least in nominal terms. This has pushed many to argue that Americans have been using the accumulation in net worth to increase consumption. And there is some truth around this idea that Americans have been using increases in wealth to increase consumption.

However, many economists, including us, have conducted research on this topic in the past and, while it is true that households use wealth accumulation to increase consumption, the impact of wealth accumulation on overall consumption is not as strong as many seem to suggest.1

Distribution of Household Wealth

But before getting into a deeper understanding of what is at stake with wealth we need to touch on some concepts that are second nature for economists but not so much for the general public. Households increase consumption out of what they earn in income. That is, households generate income from work and use this income to buy goods and services. Economists have defined the relationship between income and consumption as the marginal propensity to consume out of income (MPCI). This MPCI has been estimated at close to 96%-98% at the aggregate level. That is, out of each extra dollar of income we earn we spend close to 96 to 98 cents of that extra dollar of income. Of course, this is the aggregate MPCI, as this measure varies across different income levels. In general, the lower the income of a household, the higher is the MPCI and vice versa.