Abstract
This paper is to examine and evaluate the operational efficiency at the enterprises that have foreign investment at HCMC in the stage 2007-2011. The research also evaluates the factors that effect to financial effect, especially for using BEP ratios-Basis Earning Power (EBIT to the total assets) to measure the financial effect, because FDI enterprises normal get the incentive for differently corporate income tax in Viet Nam. The research results show that there are six factors affecting to financial performance including in: turnover, capital owners (Equity), long term debt to total asset, tangible assets to turnover, sales expensive to turnover and the management expensive to turnover. From that point, the authors also have petitioned that is to enhance performance and management enterprises as well as improvement the investment policy of Ho Chi Minh City (HCMC).