Turn assumptions into a decision you can explain
Begin with a defensible baseline, then duplicate the logic across an upside and stress case. Keep time periods and units consistent so differences come from the decision variable — not mismatched data.
Use one consistent month of sales, orders and cost data.
Change price, order volume, return rate or advertising in one scenario.
Set the margin or profit per order required before scaling.
The core model used here
The model separates percentage fees from per-order costs and reduces sales for expected refunds. It is a planning model, not a tax return or marketplace statement.
Confirm the assumptions that can change the answer
Revenue and costs cover the same reporting period.
Refund rate reduces revenue; unrecovered return handling should be included in costs.
Sales tax and income tax are excluded unless already included in an input.
Scenario data stays in this browser. CalcScoutHQ does not receive these inputs and no account is required.
Verify the key number with a focused calculator
Workspaces connect several assumptions. Use the linked calculators and decision tools to inspect the inputs that have the largest effect on your plan.