椋 寛

ABSTRACT This study examines the determination of import policies imposed on a monopoly platform product in a two‐sided market. The platform facilitates interaction between consumers and service providers with the entry of service providers influencing product demand and, consequently, encouraging more entries. The study finds that optimal import policies are influenced by network externalities and an increase in the number of importing countries. Specifically, the optimal import policies are import tariffs with a small degree of externalities. The optimal tariffs increase when externalities are small but decrease when they are large. In case of large externalities, countries' optimal import policies become import subsidies. Additionally, when importing countries noncooperatively establish their import policies, an increased number of importing countries increases the optimal tariffs with a small degree of network externalities. However, when importing countries cooperatively determine their import policies, an increase in the number of importing countries consistently decreases the optimal tariffs or increases the optimal import subsidies. Furthermore, an increased degree of the network externalities always decreases optimal import tariffs or increases optimal import subsidies. These results underscore the significance of policy cooperation among importing countries in advancing trade liberalization for platform products.

ABSTRACT Free trade agreements with rules of origin affect the location of input production for vertically integrated multinational enterprises. The relocation induced by a free trade agreement changes the allocation of decision rights within multinational enterprises and the purpose of transfer pricing from avoiding high taxes to strengthening their product market competitiveness. This study shows that a free trade agreement with rules of origin may hurt both a multinational enterprise and a local firm, despite tariff elimination, when the relocation occurs and the decision rights change from centralization to decentralization. Moreover, such a free trade agreement can hurt consumers. Nevertheless, rules of origin increase the feasibility of free trade agreements due to larger tax revenues.

Abstract Before regional trade agreements (RTAs) come into force, some firms enjoy duty‐free imports using other tariff regimes such as a duty drawback (DD) regime. For such firms, the use of RTA tariff regimes will not provide additional benefits in terms of duty exemption. In this study, we examine the trade effects of RTAs in the presence of a DD regime. We theoretically demonstrate that firms that switch from a DD to an RTA regime will either increase or decrease their imports. Subsequently, we empirically analyse the effect of this switching on imports using firm‐level trade data from Thailand. The empirical results show that switching firms either increase or do not change their imports. Our data also suggest that this increase in imported inputs is used to produce goods for the domestic market, not the export market. We also reveal that relatively small‐sized firms tend to switch to the RTA regime, while relatively large‐sized firms continue importing under the DD regime even after the entry of RTAs into force. With these results, we discuss the implication for the magnitude of trade creation effects of RTAs under the presence of DD regimes.

Abstract In regional trade agreements (RTAs), member countries choose a common rule of origin (RoO) for each product. This study examines the factors that influence RoOs in four ASEAN‐plus‐one RTAs, which are agreements between ASEAN and four individual countries. One unique feature is that ASEAN as a whole negotiates with a plus‐one country, which may dilute the interests of individual ASEAN countries at large. Our findings are summarised as follows. First, the more restrictive RoOs are set in the products where plus‐one countries are less competitive against most ASEAN countries. Second, the more restrictive RoOs are likely to be imposed in products that plus‐one countries protect with higher most favoured nation tariffs. These two results reflect the bargaining power among a plus‐on country and ASEAN countries and indicate that plus‐one's preference influences RoOs more strongly. Third, we find contrasting results between intermediate and final products. RoOs are likely to be less restrictive in intermediate products and more restrictive in final products when plus‐one countries have higher export competitiveness or when the majority of ASEAN countries have higher MFN tariffs.

Abstract This study aims to empirically investigate the role of E-commerce (EC) on the trade impacts of COVID-19. To this end, we estimate gravity equations for bilateral trade among 34 reporting countries and their 145 partner countries during January–August in 2019 and 2020. Our major findings can be summarized as follows. A larger number of confirmed cases or deaths in both importing and exporting countries significantly decrease international trade. However, we found that EC development in importing countries contributes to mitigating this negative effect of COVID-19 on trade while that in exporting countries does not. These results are robust for our use of multiple measures of EC development.

<title>Abstract</title> We examine the impact of free trade agreement (FTA) use on import prices. For this analysis, we employ establishment-level import data with information on tariff schemes, that is, the FTA and most-favored-nation schemes used for importing. Unlike previous studies, we estimate the effects of FTA use on prices by controlling for differences in importing-firm characteristics. There are three main findings. First, the effect of FTA use is overestimated when not controlling for importing firm-related fixed effects. Second, on average, firms’ FTA use reduces tariffs by 12 percentage points and raises import prices by 3.6–6.7 percent. Third, in general, we do not find a price rise resulting from the costs of complying with rules of origin.

In recent years， the number of preferential trade agreements（PTAs）increases rapidly． In tandem with the evolution of the new trade theory， the economic ana豆ysis of PTAs has also been developed drastically． This paper intends to organize a complicated mass of existing theories of PTAs and places special emphasis on their relationship with multilateral trade liberalization． Some new topics such as the effects of intemal market integration or those of rules of origin are also discussed．