인천공항지역의 시설투자와 조세수입증가의 경제적 효과에 관한 연구

The Economic Effects of Increasing Government Expenditure and Increasing Tax Revenue at Incheon Airport in South Korea

The purpose of this study is to analyze recent 6 kinds of Government expenditures time-series analysis relative to their effects on Trade transactions at Incheon International Airport in South Korea during the years covering 2010~2017. Using total expenditures of Incheon International Airport, Incheon Inhabitants’ income (GRDP), interest rate, price indexes, total export and import at Incheon International Airport, total export and import taxation at Incheon International Airport transportation customs in terms of value. After doing the Granger causality test, we found that the most important significant variables are GRDP, price indexes, interest rate, total export and import volume in Incheon International Airport, taxation on international transportation export. This was followed by analyzing the VAR model. Through impulse response function and variance decomposition analysis, it was revealed that increasing expenditures at Incheon International Airport increases also the almost interest rate. Also, Incheon International Airport’s expenditures decrease the producer price index and increase GRDP. In short, it appears that investments within Incheon International Airport are significantly a more effective way to increasing GRDP as these help increasing taxation on Incheon International Airport transportation customs transactions, too.