NATIONAL BUREAU OF ECONOMIC RESEARCH
NATIONAL BUREAU OF ECONOMIC RESEARCH
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Accounting for Factorless Income

Loukas Karabarbounis, Brent Neiman

Chapter in NBER book NBER Macroeconomics Annual 2018, volume 33 (2019), Martin Eichenbaum and Jonathan A. Parker, editors (p. 167 - 228)
Conference held April 12-13, 2018
Published in June 2019 by University of Chicago Press
© 2019 by the National Bureau of Economic Research
in NBER Book Series NBER Macroeconomics Annual

Comparing U.S. GDP to the sum of measured payments to labor and imputed rental payments to capital results in a large and volatile residual or "factorless income." We analyze three common strategies of allocating and interpreting factorless income, specifically that it arises from economic profits (Case Pi), unmeasured capital (Case K), or deviations of the rental rate of capital from standard measures based on bond returns (Case R). We are skeptical of Case Pi as it reveals a tight negative relationship between real interest rates and economic profits, leads to large fluctuations in inferred factor-augmenting technologies, and results in profits that have risen since the early 1980s but that remain lower today than in the 1960s and 1970s. Case K shows how unmeasured capital plausibly accounts for all factorless income in recent decades, but its value in the 1960s would have to be more than half of the capital stock, which we find less plausible. We view Case R as most promising as it leads to more stable factor shares and technology growth than the other cases, though we acknowledge that it requires an explanation for the pattern of deviations from common measures of the rental rate. Using a model with multiple sectors and types of capital, we show that our assessment of the drivers of changes in output, factor shares, and functional inequality depends critically on the interpretation of factorless income.

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Document Object Identifier (DOI): https://doi.org/10.1086/700894

This chapter first appeared as NBER working paper w24404, Accounting for Factorless Income, Loukas Karabarbounis, Brent Neiman
Commentary on this chapter:
  Comment, Richard Rogerson
  Comment, Matthew Rognlie
  Discussion,
 
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