The recent global debate on monetary policy has centred on whether policy should target financial stability in addition to the domestic business cycle. With relatively tightly regulated fi nancial markets, where concerns presently are more developmental than regulatory, the counterpart debate in emerging market economies centres on reconciling two widely held economic policy formulations, namely, the Mundell-Fleming "Impossible Trinity" and the "Taylor Rule". This article argues that EMEs can get around the trilemma by adopting a separate0 instrument as part of a consistent policy framework to target the external financial cycle. This would free up their interest rate policies to target the domestic business cycle, without the need to deviate from the Taylor Rule from time to time to target external fi nancial stability.