This paper, based on the theory of industrial organisation and the SCP (Structure-
Conduct-Performance) model, has studied competitive structure and factors affecting business
performance of Vietnam state-owned commercial banks including Vietcombank, VietInbank,
Agribank and BIDV. Time horizons of research data was 2002-2010 period. Research findings
have suggested number of policy implications including expanding strategy; bad debt
management; products and services diversification; customer relationship management