WTO subsidy rules and tariff liberalization: evidence from accession of China

Countries increasingly rely on subsidies to assist their producers leading to concerns about their potential misuse. The WTO regulates its members’ subsidies by defining subsidies that are permissible, as well as by providing means to retaliate against subsidies of partner countries if these subsidies hurt one's interest. However, these subsidy rules might have an unintended effect. As both subsidies and tariffs are substitute instruments of protection, tighter subsidy rules might lead to a decrease in the pace of tariff liberalization. In this paper, we present first empirical evidence in support of this prediction. Using China's accession to the WTO in 2001 as a case study, we show that China's accession to the WTO was associated with a relative increase in its tariffs for products that faced a higher threat of retaliation against subsidies. More importantly, we also show that increases in tariff were larger in products with higher potential costs imposed by retaliation. Finally, we include several robustness tests as well as conduct two counterfactual exercises to verify that the results we obtain are indeed due to perceived threat of retaliation against subsidies.