Researchers play a crucial role in investigating the seismic stability of reinforced soil walls, representing a pivotal research domain. This study utilizes the limit equilibrium approach, focusing on the pseudo-dynamic analysis of reinforced soil walls and considering the planar failure surface under uniform surcharge loading. A dedicated numerical algorithm is employed to evaluate critical factors, including factor of safety and the required strength of reinforcements for \(c - \varphi\) backfill conditions. The research incorporates a thorough parametric exploration, encompassing a wide range of influential variables such as seismic accelerations, amplification factors, cohesion, soil friction angle, and surcharge loading to extract insightful findings. Specifically, the cumulative tensile force in reinforcements \(\left( {\sum {T_{i} } } \right)\) diminishes as the soil friction angle ( \(\varphi\) ) rises, while maintaining a constant horizontal seismic acceleration coefficient ( \(k_{h}\) ). Conversely, it intensifies with an escalation in \(k_{h}\) , holding \(\varphi\) constant, for both scenarios with and without surcharge. An essential aspect highlighted is the pivotal role of the amplification factor in the seismic design of reinforced soil walls. As the amplification factor rises, the necessary reinforcement strength increases regardless of cohesion (c), soil friction angle ( \(\varphi\) ), or horizontal seismic acceleration coefficient ( \(k_{h}\) ). However, it is crucial to highlight that while the required strength of reinforcement escalates with an increasing soil amplification factor, the internal stability of the reinforced earth wall concurrently decreases. The research findings align with trends observed in existing pseudo-dynamic analyses found in the literature, emphasizing the consistency and relevance of influencing parameters in seismic stability assessments.