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The Income Fluctuation Problem with Capital Income Risk: Optimality and Stability

Qingyin Ma, John Stachurski and Alexis Akira Toda ()

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Abstract: This paper studies the income fluctuation problem with capital income risk (i.e., dispersion in the rate of return to wealth). Wealth returns and labor earnings are allowed to be serially correlated and mutually dependent. Rewards can be bounded or unbounded. Under rather general conditions, we develop a set of new results on the existence and uniqueness of solutions, stochastic stability of the model economy, as well as efficient computation of the ergodic wealth distribution. A variety of applications are discussed. Quantitative analysis shows that both stochastic volatility and mean persistence in wealth returns have nontrivial impact on wealth inequality.

Date: 2018-12
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Handle: RePEc:arx:papers:1812.01320