Policy Coordination in an International Payment System Staff Working Paper 2008-17 James Chapman Given the increasing interdependence of both financial systems and attendant payment and settlement systems a vital question is what form should optimal policy take when there are two connected payment systems with separate regulators. Content Type(s): Staff research, Staff working papers Topic(s): Exchange rate regimes, Payment clearing and settlement systems JEL Code(s): E, E4, E42, E5, E58, F, F3, F31, F33