Appliance Repair Business input evidence register
44 financial inputs with their assumptions, calculation bases and cited sources.
Read the supported claim, observation period, geography and units together. A source access date records when it was consulted. A model assumption identifies a selected amount or target; a calculated result follows from those inputs and does not establish observed demand or a quoted opening budget.
Case updated October 4, 2026. These notes accompany the complete case methodology and source register.
Dataset use notice: no Creative Commons license or DOI is asserted. Referenced material remains subject to its publisher’s terms.
These notes explain the opening budget, annual forecast and calculator assumptions. Linked sources provide the support described in each note; they do not necessarily confirm the selected amounts. Check scenario assumptions against local quotes and operating records.
- Model assumption
Applies to: Total opening budget · Lower opening budget · Upper opening budget · Staged two used service vans and organized upfits · Diagnostic, recovery, hand-tool and handling equipment · Opening replacement-parts inventory · PPE, secure storage and small work-area setup · Registration, certification, insurance and deposits · Dispatch, software, phones, website, marketing and administration · Working-capital reserve
Authored two-van opening allocation. Current diagnostic, handling, recovery, new-van, startup-cost and state-registration sources inform categories but do not verify used vehicles, complete tools, parts inventory, compliance cost or reserve.
- Model assumption
Applies to: Revenue (Years 1–5)
Authored completed-job path. Year three is 5 jobs × $425 × 5 days × 50 weeks. Official sources establish service-sector context but not local price, volume, conversion or completion.
- Model assumption
Applies to: Parts, payment fees, route fuel and other sales-linked costs (Years 1–5)
Authored 30% pool for parts, payment fees, route fuel and other sales-linked leakage. Replace it with parts purchases and returns, miles, discounts, credits, repeat visits and callbacks.
- Model assumption
Applies to: Paid owner-manager and appliance repair technician payroll (Years 1–5)
Authored paid working-owner and employee-technician schedule with employer-cost allowance. National occupation pay and federal payroll-tax components are context only.
- Model assumption
Applies to: Vehicles, insurance, tools, software, marketing and other overhead (Years 1–5)
Authored vehicle, insurance, equipment, software, marketing and administration schedule. It is not a local quote or dated cash forecast.
- Model assumption
Applies to: Retained sale per completed appliance service outcome (base scenario) · Retained sale per completed appliance service outcome (lower sensitivity) · Retained sale per completed appliance service outcome (upper sensitivity) · Completed service outcomes per field day across two vans (base scenario) · Completed service outcomes per field day across two vans (lower sensitivity) · Completed service outcomes per field day across two vans (upper sensitivity) · Trading days per week (base scenario) · Trading days per week (lower sensitivity) · Trading days per week (upper sensitivity) · Monthly fixed operating costs · Contribution margin · Opening sales as a share of mature volume · Monthly increase toward mature volume · Forecast horizon (months)
Authored completed-job break-even bridge. The $425 ticket, five jobs, 70% contribution, fixed cost and ramp must be reconciled to billable hours, diagnosis, parts, repeat visits, route time and collection.