What is a domestic subsidy?
This is a method of lowering domestic costs and prices, by the government paying subsidies to domestic producers (per unit of output), thus increasing the international competitiveness of their output both at home and in international markets.
Draw a domestic subsidy diagram
Summary of welfare effects of a domestic subsidy
Which is less inefficient a production subsidy or an import tariff?
A production subsidy is less inefficient than import tariff, because the welfare loss is larger with an import tariff (in a small country case) …(b+d)>b… . It is also worthwhile to note that production subsidy causes smaller decrease in imports …by amount (q3-q1)… in comparison with the equivalent duty …by amount (q3-q1)+(q2-q4)… .