A mounting system for securing a sink to a countertop supported by a cabinet is provided. The mounting system includes a receiving structure configured to be supported under a rim of the sink, a bracket having a first portion configured to engage a portion of the cabinet and a second portion configured to engage a bottom of a basin of the sink, a linking member extending between the receiving structure and the bracket, a first connector configured to engage a first end of the linking member and retain the linking member relative to the receiving structure, and a second connector configured to engage a second end of the linking member and secure the bracket against the cabinet and the bottom of the basin of the sink.