发表时间: 2017/9/8 2:42:50
摘要: Adopting a simple demand system, we aim to re-estimate China.s income inequality using the Urban Household Survey (UHS) data assuming the expenditure data is well measured. We find income inequality growth exceeds the growth rate of consumption inequality, although income inequality is still lower than consumption inequality over the period 2003-2009. We also .nd that the increase of income inequality is mainly due to the increase of inequality between the middle expenditure group and the high expenditure group, while the income inequality between the middle-expenditure group and the low-expenditure group slightly decreases. This not only confirms the presence of pervasive grey income, also implying that grey incomes mostly exist in the high-expenditure stratum. Following Aguiar and Bils (2015), we assume that the Engel coeffcient is log-linear and that the income elasticities are constant over time. In the robustness test, we relax the assumptions and find that the estimation results are still robust.