This paper analyzes the effect of tariff rates with respect to the approximated level of smuggling in some 5 - digit Standardized International Trade Classification (SITC) commodities present between Philippine imports from China with that of the latter\u27s export to the Philippines from years 1994 to 2004. The study examines the magnitude of technical smuggling, which is measured by the ratio of the declared exports of China to the Philippines and declared imports of the Philippines from China, both expressed in US-dollar terms. Using thorough descriptive analysis and time series data regression to identify the relationship between tariff rates and technical smuggling across periods covered, it can be concluded that protectionism through ...