Functional Department
Definition
A defined organisational unit with a designated head, a distinct operating budget, and a defined contribution to company-level revenue or efficiency. The minimum departmental structure for financial planning purposes under the FFI Standard is: sales and customer success, marketing, product and engineering, and general and administrative. Companies at Scale Stage maintain additional functional departments as their organisational structure requires.
Common Misapplication
The most common misapplication is maintaining financial reporting at the company level without departmental breakdown. Company-level reporting cannot identify which functions are over or under budget, cannot assess the financial contribution of each team, and cannot support the headcount planning required at Level 2.
FFI Standard Reference
This term is defined and applied in Book 6, Section 6.3: The Departmental Financial Planning Standard.
Related Terms
Citable URL
This term may be cited using the following permanent URL.
Full citation format: Founder Financial Infrastructure Standard, Beta v0.5, Glossary: Functional Department. https://ffistandard.org/glossary/functional-department/. 2026.