An example of a comptroller is the person who sets the budget for a company.
Origin of comptrolleraltered (infl. by French compte, an account) ; from controller
From late Middle English compteroller, a spelling variant of countreroller (from which controller) due to folk etymology: the word was thought to have an etymological connection with Middle French compte (“account”). Originally the two spellings were equivalent and pronounced identically; the modern pronunciation with [mp] is based on the spelling.
comptroller - Investment & Finance Definition
The chief accountant of a company, who is responsible for preparing financial reports and supervising internal audits. The comptroller also may act as the treasurer in small companies. The terms comptroller and controller are used interchangeably.