Assumption architecture
When the terms of reference contain the decision they are meant to test
A commissioning brief may specify a facility size, instrument, target market, expected return, implementation structure or preferred intervention before the relationships between those variables have been established. If the parameters are accepted without challenge, the analysis becomes circular: demand appears sufficient because the facility is assumed to deploy, the selected instrument appears appropriate because the model is built around its repayment profile, and sector growth is translated into revenue without testing competition, working capital, capital expenditure or investor cash extraction.
Corpfin separates parameters imposed by policy, mandate or regulation from management assumptions, external evidence, independently testable variables and conclusions dependent on unresolved information. Where the mandate permits, facility size, ownership, instrument, tenor, pricing, loss allocation, capital structure and expected return are modelled as variables rather than accepted as fixed instructions.
The analysis then determines whether another configuration can achieve the objective with less capital, a different allocation of loss or a stronger risk-adjusted outcome.
| Item in the commissioning brief | Analytical classification | Financial question |
|---|---|---|
| Proposed facility size | Variable to test | What amount can realistically be deployed and absorbed? |
| Preferred instrument | Proposed solution | Does it allocate cash flow, risk and recovery appropriately? |
| Target sector | Mandated or proposed scope | Can businesses in the sector generate the required return? |
| Expected mobilisation | Programme or management assumption | How much incremental private capital is attributable to the intervention? |
| Base-case performance | Forecast assumption | What occurs when operating and financial risks arise together? |