Negative interest rates remain a controversial policy for central banks. We study a novel signalling channel and ask under what conditions negative rates should exist in an optimal policymaker’s toolkit. We prove two necessary conditions for the optimality of negative rates: a time-consistent...

There are several widely used benchmark models of the long-term interest rate in quantitative finance. However, these models have yet to incorporate Keynes's valuable insights about interest rate dynamics. The Keynesian approach to interest rate dynamics can be readily incorporated in the...

The aim of this study is to determine if capital flows can account for the international effects on domestic monetary policy, using an augmented Taylor rule model. In addition to the standard determinants of nominal interest rates, we include capital flow measures to show how central banks...