The Egyptian tomb bat roosts in groups typically containing six to ten individuals, although larger colonies may also be found (2), and this species may sometimes roost alongside mouse-tailed bats (Rhinopoma species) and the Egyptian slit-faced bat (Nycteris thebaica) (2). The Egyptian tomb bat typically emerges at dusk (2), although it has been known to hunt in the daytime (4). Using echolocation (9), the Egyptian tomb bat detects and captures prey whilst flying rapidly at speeds of about eight metres per second at high altitudes (5). It feeds primarily on moths, but also consumes a variety of others insects, such as termites, beetles and crickets (5) (10).
Little is known about reproduction in this species, except that it is thought breeding takes place in April and May in Egypt, with each female giving birth to a single young (2).