(Version in Español)
With the expected move by the Federal Reserve to raise interest rates before the end of the year, many are asking about the effects on emerging market countries. Will outflows increase, and how will this affect economic activity in emerging markets? To answer that, we need to know if capital inflows are in general expansionary or contractionary.
One would think that the question was settled long ago. But, in fact, it is not. It is a case where theory suggests one thing and practice another. The workhorse model of international macro (the Mundell-Fleming model), for example, suggests that, for a given monetary policy rate, inflows lead to an appreciation, and thus to a contraction in net exports—and a decrease in output. Only if the policy rate is decreased sufficiently can capital inflows be expansionary. Symmetrically, using a model along these lines, Paul Krugman argued in his 2013 Mundell-Fleming lecture that capital outflows are expansionary.