Returns to scale in cost, revenue, and profit for European banks: New results from nonparametric local linear methods
使用非参数局部线性方法，研究了2000-2020年欧洲银行在成本、收入和利润方面的规模报酬，发现多数银行成本上规模报酬递增，收入和利润上递减，提示限制银行规模可能不会大幅损失收入和利润。
Abstract The continuously increasing bank sizes have received much attention from both policymakers and researchers. We present new estimates of returns to scale in cost, revenue, and profit for European banks over 2000–2020 based on nonparametric, local‐linear methods. We find that most banks faced increasing returns to scale in cost and decreasing returns to scale in revenue and profit across years, across European countries, and across bank size quartiles. Our results suggest that restricting the size of banks may not bring too much loss of revenue and profit, but could prevent European banks from exploiting increasing returns to scale in cost.