This work is focused on the study of combined heat and mass transfer by MHD stagnation point flow toward a permeable stretching surface in the presence of a first order chemical reaction. The governing equations for the flow, heat and mass transfer are formulated and solved analytically using the homotopy analysis method (HAM). Graphical and numerical demonstrations of the convergence of the HAM solutions are provided. A detailed study illustrating the influences of the magnetic, velocity ratio, suction/injection and chemical reaction parameters, the Schmidt and Prandtl numbers on the dimensionless velocity, temperature as well as the skin-friction and the Nusselt and Sherwood numbers is conducted. The results obtained show that the flow field is substantially influenced by the presence of chemical reaction, transpiration, and magnetic field. (C) 2015 Elsevier B.V. All rights reserved.