The Corporate Profit Equation Derived, Explained, Tested: 1929-2013

"In this piece, I’m going to derive and explain the Kalecki-Levy Corporate Profit equation, and then demonstrate its truth empirically using data collected by the BEA.  I’m then going to present tables that show the values of the components of the equation, as a percentage of GNP, from 1929-2012 annually, and from 1951 to 2013 quarterly, with recessionary periods shaded in.  I’m going to conclude with a brief comment on mean reversion."

"The ratio of Corporate Profit to GNP is currently near a record high, well above highs seen in prior cycles.  Considered in itself, this condition is negative for equities: it makes corporate profit growth more difficult going forward.  However, it would be a mistake to assume that the ratio has to revert to the average of a prior era.  It doesn’t, and neither does any other part of the equation.

As a percentage of GNP, corporate profit has remained elevated relative to historical averages for a full 10 years.  It was given an excellent chance to mean-revert in the Great Recession–but it didn’t.  It fell slightly, and then immediately bounced back–barely breaking below prior highs."