This is a theoretical and empirical study of trade policy in a small open e
conomy with intermediate inputs. The first part develops a theoretical mode
l and obtains expressions for optimal second-best tariffs on an intermediat
e input when tax revenue is used to provide a public good and all other tax
es are unalterable. In the second part, we estimate, for Pakistan, the opti
mal tariff on sheet steel using the formula developed in the theoretical pa
rt. We find that the current level of tariff is considerably higher than th
e optimal one even after making generous allowances for government's revenu
e constraint. (C) 2000 Elsevier Science B.V. All rights reserved. JEL class
ification: Fl; O2; O5.