A carrier or support system for a wall mounted toilet for adequately supporting the weight of a user. A first support assembly has a faceplate, spaced-apart pedestals, two washer plates, a fitting member, a coupling, a first fastener for allowing vertical movement between the pedestals and the faceplate, a second fastener for allowing vertical movement between the fitting member and the faceplate, and a first threaded stud arrangement for mounting the toilet to the wall. A second support assembly has a support member, a second threaded stud arrangement, and an anchor foot for supporting the fitting member on the floor. A third support assembly has a frame and a third threaded stud arrangement mounted to the frame for supporting the frame on the floor. The second and/or third support assemblies may be used with the first support assembly for providing adequate support for bariatric or obese users.