2.2 Simulation Scheme Settings
Since the RCEP agreement was officially imple-
mented in 2022, we set 2021 as the base year for sim-
ulation predictions, and refer to the study of Ahmed
et al. (Ahmed Y N, 2020) to update the database to
2021. In this paper, the import tariff tax intensity
(tms) and the implementation of non-tariff measures
(ams) are used as policy shock variables to simulate
and predict.
In the setting of tariff shock, this paper uses the
weighted average method with the weight of imports
to quantify the tariff commitment table with reference
to the research of Petri&Plummer (Petri P A,
2019).The first step is to correct the tariff data of the
GTAP10.0 database according to the base rate listed
in the RCEP tariff commitment table: First, calculate
the base rate of the HS8 code by arithmetic average,
and then calculate the base rate for HS2 code of
China, Japan, South Korea, Australia, New Zealand
and ASEAN to other RCEP member countries on the
basis of the import volume in 2021. The second step
is to calculate the tariff reduction of the member
countries after the full implementation of the RCEP
agreement according to the tariff rates listed in the
tariff commitment table for the first 20 years of the
agreement's entry into force. That is to calculate the
tariff change rate of HS8-bit coded goods in the 20th
year, and then calculate the tariff change rate of HS6-
bit coded goods by arithmetic average. The third step
is to take the import volume in 2021 as the weight to
calculate the tariff reduction rates of China, Japan,
South Korea, Australia, New Zealand and ASEAN to
other RCEP member countries in the 8 industrial
groups as shown in Table 1.
In the setting of non-tariff shock, it is mainly di-
vided into two parts: trade in goods and trade in ser-
vices. According to the agreement of RCEP, this arti-
cle sets up that within the RCEP region, export sub-
sidies for agricultural products will be reduced by
100%, quantitative restrictions by 100%, sanitary and
phytosanitary measures by 10%, technical barriers to
trade by 10%, safeguard measures by 10%, and anti-
dumping, countervailing and tariff quotas remain un-
changed. Based on the number of non-tariff barrier
measures implemented by RCEP member countries
in the six major industries of agriculture, animal hus-
bandry, forest fishery, low-tech manufacturing, low-
and low-tech manufacturing, medium-and high-tech
and high-tech manufacturing in 2020, the reduction
degree of non-tariff barriers in the six major goods
trade industries is calculated.
As for the reduction of non-tariff barriers to trade
in services, after the full implementation of RCEP,
the reduction of non-tariff barriers to trade in services
among member countries will tend to be consistent.
According to the commitment table, the member
countries of RCEP do not make any commitment to
the field of public services, and there are basically no
restrictions on cross-border provision, overseas con-
sumption and commercial existence in other service
areas, but there are restrictions on the movement of
natural persons. Accordingly, there is no reduction in
non-tariff barriers in public services in the RCEP re-
gion, and a 30% reduction in other service sectors.
3 EMPIRICAL RESULTS
3.1 Economic Effect
After the RCEP taking effect, the change rates of
GDP and import and export-related indicators of
countries are shown in Table 2. The simulation results
show that, the per GDP of China, Japan, South Korea
and Australia will increase, while that of New Zea-
land and ASEAN will decrease. It indicates that cur-
rent economies with a higher level of gross national
income and a better degree of economic development
and foundation have a greater degree of improvement
in their income level after enjoying RCEP trade bar-
rier reduction measures. On the contrary, if the eco-
nomic foundation is worse than others, the smaller the
degree of improvement, and may produce trade sub-
stitution effect, the GDP will slightly decrease.
3.2 Trade Effect
First, the scale of import and export has increased.
After the implementation of RCEP, China, Japan,
South Korea, Australia, New Zealand, ASEAN im-
ports and exports and trade dependence have all in-
creased. China's import and export can be greatly in-
creased, and the degree of trade dependence will also
increase, but it is lower than that of other member
countries.