What counts as investment? Productive and unproductive expenditures

Abstract

There have been significant changes in what economists include in the category of investment over the last six decades. The US government agency that compiles national income date, the Bureau of Economic Analysis, has tried to keep up with these changes, but it has not succeeded. The resulting tension between economic theory and official data can be overcome by adopting a different theoretical lens. Work on social reproduction and social investment suggests a more coherent definition of investment than that offered by mainstream economists. The paper then contrasts the measurement of investment in the government data with a calculation of investment derived from this new approach. The results show that business investment is dwarfed by the combined investment made by government and households. This finding suggests that business investment is not the key engine that powers the economy. This has significant implications for economic and social policies.