A toilet installed in a bathroom includes a toilet bowl and a tank coupled to the toilet bowl. The tank can contain fluid for the toilet bowl. A rear surface of the tank is flush against a wall of the bathroom such that there is no gap between the tank and the wall and a bottom surface of the tank is flush against a floor of the bathroom such that there is no gap between the tank and the floor. The tank extends longitudinally above and below the toilet bowl and laterally outward past the toilet bowl such that a first side surface and a second side surface of the tank define outermost side peripheries of the toilet.