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Making sense of Piketty’s ‘fundamental laws’ in a Post-Keynesian framework

Stefan Ederer and Miriam Rehm
Authors registered in the RePEc Author Service: Engelbert Stockhammer

No PKWP1808, Working Papers from Post Keynesian Economics Society (PKES)

Abstract: Piketty’s main theoretical prediction is that a small elite will own all wealth if capitalism is left to its own devices. We formulate and calibrate a Post-Keynesian model with an endogenous distribution of wealth between workers and capitalists. The model permits Piketty’s corner solution of all wealth held by capitalists; however, it also shows that interior solutions with a stable, non-zero wealth share of workers, a stable wealth-to-income ratio, and a stable and positive gap between the profit and the growth rate determined by the Cambridge equation. Furthermore, simulations show that the model conforms to Piketty’s empirical findings in a transitional phase, in which the wealth share of capitalists rises to over 60%, the wealth-to-income ratio increases, and income inequality rises. Finally, we show that the introduction of a wealth tax as suggested by Piketty could neutralize the rise in wealth concentration.

Keywords: Post-Keynesian; model; wealth; saving; inequality; Piketty; simulation (search for similar items in EconPapers)
JEL-codes: C63 D31 E12 E21 (search for similar items in EconPapers)
Pages: 26
Date: 2018-09
New Economics Papers: this item is included in nep-bec, nep-mac and nep-pke
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (4)

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