Financial model to help decide whether to build software in-house or buy SaaS.
Assumptions
Linear scaling models used for simplicity.
Currency defaults to GBP (£) or EUR (€).
Estimates exclude exceptional one-off costs.
Note: This interactive tool requires JavaScript to function.
Fallback calculation: A typical rough estimate without JS can be done manually by multiplying your base metric by industry average multipliers (e.g., 1.5x for fully loaded costs).