Tax competition for a mobile factor is different in `new economic geography set- tings' compared to standard tax competition models. The agglomeration rent which accrues to the mobile factor in the core region can be taxed. Moreover, a tax differential between the core and the periphery can be maintained. The present paper reexamines this issue in a setting which, in addition to the core-periphery equilibria, exhibits stable equilibria with partial agglomeration. We show that a tax differential may arise as an equilibrium of the tax game even when there is only partial agglomeration and the mobile factor does not derive an agglomeration rent.