Keep ROI Calculator Inputs Separate From Verified Buyer Results
A sales return-on-investment model is a scenario, not automatically a customer outcome. Before showing a total, identify which inputs came from the buyer, which are estimates and which represent unverified assumptions. The useful discussion is about the model’s basis, not just its largest projected number.
Label the source of each input
Separate supplied operational data from seller estimates and illustrative placeholders. Keep the time period and unit with every value. Hours per week and hours per month should not be combined without an explicit conversion. Do not present a generic benchmark as a measured result for the buyer’s team, or invent a benchmark simply to complete the spreadsheet.
Test the important assumptions
Show how the result changes when a consequential assumption changes. Ask which inputs the buyer can reasonably verify and which remain uncertain. Avoid implying that every released hour becomes cash savings or that adoption happens instantly. A scenario can still be useful when it identifies the conditions required for an expected benefit.
Distinguish the proposal from later evidence
If a trial or project produces actual information, retain it separately and compare it using compatible definitions. Do not overwrite the original estimate and then describe the revised model as what was promised all along. Where AI drafts the narrative, review each quantitative claim against the model. This is a general sales practice, not a claim about a currently available CloseRail calculator or a guaranteed financial result.
Copyable worksheet
Use one row for each field. Mark unknown information clearly and retain the original records.
| Field | Your note |
|---|---|
| Input and unit | ____________________ |
| Buyer-supplied, estimated or illustrative | ____________________ |
| Time period | ____________________ |
| Sensitive assumption | ____________________ |
| Evidence needed after evaluation | ____________________ |
Worked example
Illustrative example: a fictional model assumes five hours saved weekly. The buyer explains that only part of that time could be reassigned. The team revises the scenario transparently and keeps the assumption visible instead of presenting the original headline as verified savings.