Today my boss stated something which I think is a very good way to illustrate the difference between a business controller and a financial controller.
The financial controller would say: “This month we used 15 tons of raw material. Shit, why aren’t any costs recorded?”
While the business controller would say: “This month we used 15 tons of raw material. Why 15 tons when we should have used 11?”
In a nutshell, the role drives the questions one should ask. A financial controller’s role is to make sure the financials reflect reality. A business controller’s role is to understand that reality, or put differently, understand how good or bad we are at doing things.