Definitions can differ, unfortunately. However, CTC, as I know it, usually refers to Total Guaranteed Cost to Company—in other words, before incentives—whereas Total Remuneration will refer to CTC plus incentives. I have seen different usage of the terms, though, and it is critical to be sure the source you are using has the same definition as you do—or you could end up basing fixed pay on a market figure that includes both fixed and variable.