evidence: Reducing import tariffs as part of an overall program of trade liberalization is a major policy challenge currently facing many developing countries. Two concerns should be carefully addressed. First, tariff reduction should not lead to unintended changes in the relative rates of effective protection across sectors. One simple way of ensuring that unintended consequences do not occur would be to reduce all nominal tariff rates by the same proportion whenever such rates need to be changed. Second, nominal tariff reductions are likely to entail short-term revenue loss. This loss can be avoided through a clear-cut strategy in which separate compensatory measures are considered in sequence: first reducing the scope of tariff exemptions in the existing system, then compensating for the tariff reductions on excisable imports by a commensurate increase in their excise rates, and finally adjusting the rate of the general consumption tax (such as the VAT) to meet remaining revenue needs.