Logo Logo

When Is It Optimal to Abandon a Fixed Exchange Rate?, Review of Economic Studies

Abstract

The influential Krugman-Flood-Garber (KFG) model of balance of payment crises assumes that a fixed exchange rate is abandoned if and only if international reserves reach a critical threshold value. From a positive standpoint, the KFG rule is at odds with many episodes in which the central bank has plenty of international reserves at the time of abandonment. We study the optimal exit policy and show that, from a normative standpoint, the KFG rule is suboptimal. We consider a model in which the fixed exchange rate regime has become unsustainable due to an unexpected increase in government spending. We show that, when there are no exit costs, it is optimal to abandon immediately. When there are exit costs, the optimal abandonment time is a decreasing function of the size of the fiscal shock. For large fiscal shocks immediate abandonment is optimal. Our model is consistent with the evidence that many countries exit fixed exchange rate regimes with plenty of international reserves in the central bank's vault.

Type

Article

Author(s)

Sergio Rebelo, Carlos Vegh

Date Published

2008

Citations

Rebelo, Sergio, and Carlos Vegh. 2008. When Is It Optimal to Abandon a Fixed Exchange Rate?. Review of Economic Studies. 75(3): 929-955.

KELLOGG INSIGHT

Explore leading research and ideas

Find articles, podcast episodes, and videos that spark ideas in lifelong learners, and inspire those looking to advance in their careers.
learn more

COURSE CATALOG

Review Courses & Schedules

Access information about specific courses and their schedules by viewing the interactive course scheduler tool.
LEARN MORE

DEGREE PROGRAMS

Discover the path to your goals

Whether you choose our Full-Time, Part-Time or Executive MBA program, you’ll enjoy the same unparalleled education, exceptional faculty and distinctive culture.
learn more