“…First, distortionary taxation is the only fiscal instrument impacting the aggregate supply with no effect on 4 The Rogoff (1985) model assumes complete information, deterministic policy preferences, a static economy and no interaction with other policy makers. Among recent contributions, we note Beetsma and Jensen (1998), Muscatelli (1998), Schaling et al (1998) -uncertain central bankers' preferences -Herrendorf andLockwood (1997) -stochastic inflation biases -Svensson (1997) -output persistence - Cukierman andLippi (1999, 2001), Guzzo and Velasco (1999), Lawler (2000) -explicit labour market institutions - Huang and Padilla (1995), Debrun and Wyplosz (1999), Debrun (2000), Levine and Pearlman (1998), Pina (1999), Beddies (1999), Catenaro and Tirelli (2000), Beetsma and Bovenberg (2001a), Dixit and Lambertini (2003) -the interaction with fiscal policy.…”