實證結果發現共同成本效率最高的是日本，表示日本的銀行廠商使用的生產技術，居五國之冠。平均而言，各國若能使用先進技術，在共同邊界上生產，可以節省28%的生產成本。技術缺口顯示各國技術的差異，各樣本國皆有銀行的生產邊界與共同邊界相切，表示這些銀行採用的生產技術水準最高。規模經濟的驗證顯示各國快接近長期成本的最低點，且具有多元經濟，為充份發揮資源共享優勢，各銀行應同時提供多種金融商品，降低生產成本。 During the Asian financial turmoil, many east and south Asian counties were heavily hit. The governments of these countries took steps to liberalize their financial industries in an attempt to improve their banks efficiency.
To investigate whether the production efficiency of the banks in this area is enhanced after the financial crisis, we use the stochastic frontier approach along with meta cost function model. The stochastic meta-cost frontier model enables the calculations of relative technical efficiencies for banks operating under different technologies and of the technology gaps, to be estimated for banks under different technologies relative to the potential technology available to the industry as a whole. We collect data from Hong Kong, Thailand, Malaysia, Japan, republic of Korea, and Taiwan to be used in the empirical study.
Evidence is found that Japan has the best level of production technology. On average, Sample banks can save about 28% of the current expenditure to produce the same amount of outputs, if they adopt the best technique to produce their outputs. The technology gap measures the difference of production technology among different groups. Each country has some banks producing on the metafrontier as there is some technology gap estimates being found to be equal to unity. Economies of scale and scope prevail in the sample, meaning that sample banks can benefit by enlarging their production scale and diversifying their outputs. This is because these actions are able to decrease the average cost.