This paper studies optimal fiscal policy in an economy where heterogeneous agents with uncertain lifetimes coexist. We show that some plausible social welfare functions lead to time-inconsistent optimal plans, and we suggest restrictions on social preferences that avoid the problem. The...

The paper discusses simple microfoundations for Liquidity Deflation (Calvo 2016, Chapter 2), which gives rise to liquidity trap under perfectly flexible prices/wages. Unlike Keynes (1936), this is a Supply Side Liquidity Trap, SSLT, not resolved by a fall in prices /wages, or massive helicopter...

This note is motivated by trying to understand the macroeconomic implications of assuming that periods of financial bonanza and turmoil are driven by financial innovation and collapse in line with the "bank run" literature of the Diamond-Dybvig (1983) variety. Bypassing a host of important but,...

The paper examines the robustness of Interest Rate Rules, IRRs, in the context of an imperfectly credible stabilization program, closely following the format of much of the literature in open-economy models, e.g., Calvo and Végh (1993 and 1999). A basic result is that IRRs, like Exchange Rate...

The paper argues that Emerging Market economies (EMs) face financial vulnerabilities that weaken the effectiveness of a domestic Lender of Last Resort (LOLR). As a result, monetary policy is inextricably linked to the state of the credit market. In particular, the central bank should be ready to...

The paper argues that global financial factors played an important role in the capital-inflow episode in Emerging Market economies (EMs), during the early part of the 1990s, and clearly in the Sudden Stop (of capital inflows) crises that took place after the 1998 Russian crisis. Moreover, the...