This article examines the role of fiscal stabilization policy in a two‐country framework that allows for partial exchange rate pass‐through. Analytical solutions for optimal monetary and fiscal policy rules depend on the degree of pass‐through. Each country unilaterally uses its fiscal instrument to stabilize the costs facing exporters. The welfare effects differ strongly depending on the degree of pass‐through. For high levels, both countries are better off with the fiscal instrument and welfare is closer to the benchmark flex‐price level. For low levels, however, the unilateral equilibrium policy rules lead to high volatility in taxes, and fiscal policy ends up being destabilizing by transmitting exchange rate fluctuations. Because these results stem from strategic considerations by the two countries, the fiscal instrument is not used under policy coordination. In addition, imposing a monetary union increases welfare when pass‐through is low, including the case of local currency pricing. (JEL E52, E63, F41, F42)