Laffer curves and fiscal multipliers: lessons from Mélèze model

available as Insee working paper, with Benoît Campagne

We use the two country DSGE model of the Euro area Meleze developed at Insee to perform ex ante fiscal reforms evaluations. The main features of the model compare with standard tools developed in international institutions and central banks. In practice, tax rates are below the government revenues maximizing rate identified by generalized equilibrium Laffer curves in the model. The extent of this result nevertheless depends on the degree of monopolistic competition on the goods market. We also analyse short and long term multipliers for numerous fiscal tools. These compare to standard DSGE simulations as well as to the macroeconometric model Mésange. However, depending on the behaviour of fiscal and monetary authorities, short-term fiscal multipliers variations are substantial, from 0.2 up to 1 point around the baseline in the most extreme case. All in all, there exists room of manoeuvre for so called mixed-strategies fiscal policy.

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