Journal Article
No. 2018-15 | March 19, 2018
Jean-Philippe Bouchaud, Stanislao Gualdi, Marco Tarzia and Francesco Zamponi
Optimal inflation target: insights from an agent-based model
(Published in Agent-based modelling and complexity economics)


Which level of inflation should Central Banks be targeting? The authors investigate this issue in the context of a simplified Agent Based Model of the economy. Depending on the value of the parameters that describe the behaviour of agents (in particular inflation anticipations), they find a rich variety of behaviour at the macro-level. Without any active monetary policy, our ABM economy can be in a high inflation/high output state, or in a low inflation/low output state. Hyper-inflation, deflation and “business cycles” between coexisting states are also found. The authors then introduce a Central Bank with a Taylor rule-based inflation target, and study the resulting aggregate variables. The main result is that too-low inflation targets are in general detrimental to a CB-monitored economy. One symptom is a persistent under-realization of inflation, perhaps similar to the current macroeconomic situation. Higher inflation targets are found to improve both unemployment and negative interest rate episodes. The results are compared with the predictions of the standard DSGE model.

JEL Classification:

E31, E32, E52


Cite As

Jean-Philippe Bouchaud, Stanislao Gualdi, Marco Tarzia, and Francesco Zamponi (2018). Optimal inflation target: insights from an agent-based model. Economics: The Open-Access, Open-Assessment E-Journal, 12 (2018-15): 1–26.

Comments and Questions

Jiddah M.A. Ajayi - Abs model and inflation
March 20, 2018 - 17:24 | Author's CV, Homepage
A very well thought out paperwork, detailed and explicit. It's quite enriching and educative. I recommend it to all and sundry