Abstract
The paper empirically analyses the determinants of banking system structure (as measured by bank assets, number, branches and employees) for 26 developed OECD countries. The estimated regressions are then applied to 23 transition economies, to obtain benchmarks for the efficient structure of their banking systems. The actual and benchmark measures of banking structure are compared to evaluate the state of banking system development, including the computation of a measure of ‘banking system convergence’. The results are objective and replicable multidimensional measures of banking system development for the transition economies.