The paper pertains to the pseudo-static seismic stability analysis of reinforced soil structures. Using limit equilibrium method and assuming the failure surface to be logarithmic spiral, analysis has been conducted to maintain internal stability against both tensile and pullout failure of the reinforcements. The influence of the intensity of the surcharge load placed on the backfill is also considered in the analysis. Studies have also been made regarding the influence of backfill soil friction angle, horizontal seismic accelerations, the tensile strength of reinforcement, pullout length of the reinforcement and number of reinforcement layers on the seismic stability against tension and pullout modes of failure. © 2009 IOS Press.