The economics of subsidies

The purpose of this Section is to assist the reader to better understand the twin questions of why governments use subsidies and how subsidies impact international trade. As is frequently the case in economic analysis, the starting point for what follows is a “benchmark” economy featuring perfectly competitive markets. This approach provides the basis for general insights into the impact of policy interventions such as subsidies. As discussed further below, under the condition of a perfectly competitive market, no case can be made for a subsidy. Introducing a subsidy or some other government measure within a perfect market framework will be inefficient and welfare-diminishing. But if the perfect market assumption is relaxed, situations may arise where a government measure like a subsidy improves welfare. An efficient subsidy would correct a market failure, bringing social and private costs and benefits into alignment.