Calculator · Documentation
Calculator model notes
How each Valuvix calculator works, what it relies on, where it stops, and a test case you can reproduce: the model documentation IVS 105 expects a valuer to hold.
Why calculator model notes matter
Under IVS 105 Valuation Models, a calculator used in a valuation is a valuation model, and one sourced from outside the valuer's own firm still has to be assessed, understood and tested before it is relied on. These model notes set out, for each of the twenty-three Valuvix calculators, the method and key formulas, the significant inputs and their sources, the outputs, the main limitations, and a test case recomputed independently of the tool.
Use them to document why a calculator suits the engagement and what its results can and cannot support. The input register on each calculator page records the data behind every figure; these notes record the model.
Related: All calculators · Approaches and methods · IVS 2025: what changed
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