The costs and benefits of cooperative monetary and fiscal policy are analys
ed in the framework of a partisan business-cycles model. It is shown that p
olitical parties with different ideologies prefer to choose different arran
gements for macroeconomic policy-making. More specifically, right-wing part
ies favour independent central banks more than left-wing parties. An indepe
ndent central bank is also the generally preferred option from a social wel
fare point of view. In addition, the form of policy-making arrangements bet
ween the fiscal and monetary authorities is shown to influence the extent o
f partisan cycles.