We study the impact of decoherence on B meson systems with specific emphasis on Bs. For consistency we also study the Bd mesons based on the most recent data. Even though the study of decoherence made here depends upon the basis chosen and the final decay products, our analysis suggests that the coherence property of B meson systems is robust and could be a good candidate for making a study of foundational aspects of quantum mechanics. © 2013 American Physical Society.