A neutral comparison frame
| Criterion | What good looks like | Failure signal |
|---|---|---|
| Cost boundary | Direct cost, labor burden, and overhead are separate and defined. | The same vehicle, owner, or insurance cost can be counted twice. |
| Formula audit | Users can inspect the equation, inputs, units, rounding, and version. | A price appears without an explainable path. |
| Capacity | Billable hours reflect nonbillable paid time and realistic utilization. | Every paid hour is assumed saleable. |
| Change control | Added scope retains cost categories, approvals, and revenue context. | Change work is buried in a round number. |
| Feedback loop | Estimate and actual data use consistent categories and terminology. | There is no way to identify which assumption missed. |
| Portability | Data can be copied, printed, or exported in understandable formats. | Values are trapped without units or formula metadata. |
Calculator versus spreadsheet
A focused calculator can enforce validation, terminology, formula versioning, and a consistent trace. A spreadsheet can be more flexible and easier to adapt to an existing price book, but hidden cells, copied formulas, binary rounding, and unlabeled inputs can make review harder. Export from TradeQuote Lab when a spreadsheet is the right downstream workspace; do not treat either format as automatically more accurate.
Spreadsheet versus field-service software
Field-service software can reduce duplicate entry and connect estimating with scheduling, time tracking, invoices, or job costing. That integration is valuable only when the configured labor, overhead, and margin logic remains inspectable. Ask whether the system distinguishes markup from margin, preserves actual cost categories, exports your data, and documents price-book changes.
Commercial independence
This hub does not rank vendors by commission. A future affiliate or sponsored resource must be visibly labeled, appear in relevant context, and never change a formula or diagnostic. See the affiliate disclosure.
Establish the baseline before buying
Use the free calculators to document the current labor, overhead, and margin assumptions. Then compare tools against that known workflow rather than asking software to invent a “market price.”