A bench seat cover assembly includes a slip cover that has a seat portion forming an angle with a backrest portion thereby facilitating the slip cover to be positioned over a bench seat in a vehicle. A pair of elastomeric belts is each coupled to the seat portion of the clip cover and a pair of securing belts is each coupled to the seat portion of the clip cover. Each of the securing belts is releasably matable to a respective one of the elastomeric belts for securing the set portion on the seat of the bench seat. A pair of floor flaps each extends away from the seat portion of the slip cover thereby facilitating each of the floor flaps to lie on a floor of the vehicle when the slip cover is positioned over the bench seat.