“…Municipalities face mobile tax bases, which depend on both their own tax rate and their neighbors' tax rate giving rise to tax competition (Kanbur and Keen, 1993;Devereux et al, 2008;Rizzo, 2010). Finally, in the traditional "spillover" model, public expenditures of a municipality may have positive or negative effects beyond its own boundary, thus affecting the welfare of residents in neighboring municipalities (Case et al 1993;Revelli, 2002;Revelli, 2003;Baicker, 2005;Solé-Ollé, 2006;Werck et al, 2008;Costa et al, 2015). As a result, municipalities might decide the level of their own expenditure, by strategically taking into account the expenditures of their neighbors.…”