Field-effect transistor (FET) stack voltage compensation. In some embodiments, a switching device can include a first terminal and a second terminal, and a plurality of switching elements connected in series between the first and terminal and the second terminal. Each switching element has a parameter that is configured to yield a desired voltage drop profile among the connected switching elements. Such a desired voltage drop profile can be achieved by some or all FETs in a stack having variable dimensions such as variable gate width or variable numbers of fingers associated with the gates.