Template-Type: ReDIF-Paper 1.0 Title: When Does Household Heterogeneity Matter for Aggregate Fluctuations? Author-Name: Zheng Gong Author-Email: zgong@uni-bonn.de Classification-JEL: D31, E21, E43, E52, E62 Keywords: Heterogeneous households; Monetary Policy; Fiscal Policy; HANKmodel; Inequality; Business cycles. Abstract: This paper decomposes a Heterogeneous-Agent New Keynesian (HANK) model’s responses to aggregate shocks into Representative-Agent (RANK) and redistribution effects. RANK effects are obtained by introducing counterfactual transfers neutralizing redistribution, ensuring homogeneous agent responses. Redistribution effects stem from the HANK model’s response to the derived redistribution shock, which breaks down into interest rate exposure, income exposure, and liquidity channels. Following a monetary policy shock, RANK effects explain 62% of the consumption response; the interest rate, income, and liquidity channels contribute 16%, 14%, and 8% respectively. The decomposition is also applied to literature to identify key redistribution channels driving model dynamics. Note: Length: 83 Creation-Date: 2025-01 Revision-Date: File-URL: https://www.crctr224.de/research/discussion-papers/archive/dp624 File-Format: application/pdf Handle: RePEc:bon:boncrc:CRCTR224_2025_624