The interaction between cognitive and balance control can be understood best through methods that capture event-related effects of cognitive processes on balance control with high temporal resolution and precision. We developed such an approach to examine how cognitive conflict interferes with body balance during upright standing. Ninety young adult participants stood on a force plate while performing two cognitive conflict paradigms: the Simon task and the Spatial Stroop task. By aligning force plate time series (resembling balance dynamics) to both target and response onset in the cognitive task, we assessed the temporal dynamics of congruency effects on force moment variability as an indicator of simultaneous balance control. In both tasks, incongruent trials reduced force moment variability, which may express a lower rate of balance adjustments during incongruent trials, possibly the consequence of a coincidental inhibition or suppression when cognitive resources are recruited for conflict resolution. The interference time course differed between tasks: reduction of moment variability spanned a shorter time period in the Simon task, whereas interference observed in the Stroop task was slightly longer lasting. These findings replicate and extend earlier results (Johannsen et al., 2023), showing that cognitive conflict robustly permeates balance control through task-specific mechanisms. The results align with predictive and event-driven models of balance control.