This paper gives first empirical evidence from Vietnam, an emerging country, on the impact of financing decision on firm performance in Vietnam. The study uses data of 102 non financial firms listed on Ho Chi Minh Stock Exchange (HOSE) in the 2008-2018 period. Generalized method of moment (GMM) is employed to overcome drawbacks of the model to assure stable and efficient findings. In this study, return on assets (ROA) is utilized to measure firm performance. | Financing decision and firm performance Evidence from an emerging country