We study, theoretically and empirically, how countries choose intra-bloc tariffs and preferential margins when they … to a customs union (where members coordinate external tariffs). Moreover, in customs unions (but not necessarily in free …

In this paper we demonstrate the importance of distinguishing capital goods tariffs from other tariffs. Using exposure … reduction in intermediate and consumption input or output tariffs do not significantly increase their investment rates. However …, firms' investment rate increase strongly in response to a reduction in capital goods input tariffs. Firms do not substitute …