Auto Detailing 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 5, 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 · Mobile equipment and secure upfit · Wastewater containment, recovery and disposal setup · Initial chemicals, PPE and towels · Booking, website and branding · Registrations, permits, insurance deposits and professional fees · Working capital reserve
StartFigures authored the $35,000, $100,000 and $150,000 scopes and every non-vehicle allowance. Current vendor offers anchor lean and premium equipment possibilities; EPA and SBA identify wastewater and launch work. None verifies a delivered package, authority fee or cash requirement for this operator.
- Source-based input
Applies to: Cargo van
The $48,400 van allowance equals Ford's published 2026 Transit starting MSRP. Destination, configuration, tax, registration, financing, upfit, usable payload and the vehicle actually purchased remain separate.
- Model assumption
Applies to: Revenue (Years 1–5)
Every annual revenue value is an authored scenario. Years one through three apply two, 2.6 and three completed vehicles per day to the $205 ticket, five days and 52 weeks; years four and five keep three vehicles and use $218 and $231. Current price anchors and broad market context do not verify route volume, mix, retained price or demand.
- Model assumption
Applies to: Chemicals, route fuel, disposal and transaction costs (Years 1–5)
Each annual sales-linked cost is the authored 20% envelope applied to revenue. Package, fuel and wash-water sources identify costs to measure but do not establish chemical use, towels, route fuel, disposal, card fees or rework. Refunds already deducted from retained revenue are not a second expense for this van.
- Model assumption
Applies to: Paid owner and helper incl. employer costs (Years 1–5)
All five payroll values are authored schedules for paid owner labor, a part-time helper and employer-cost allowance. BLS and IRS provide national wage and federal tax context; neither verifies local pay, hours, overtime, state costs, workers' compensation or owner compensation.
- Model assumption
Applies to: Vehicle, insurance, marketing and other operating costs (Years 1–5)
All five other-overhead values are authored schedules for the van, insurance, software, marketing and other operating costs. Vehicle, insurance and launch sources identify categories and reference values but supply no complete annual operating quote.
- Model assumption
Applies to: Net revenue per completed vehicle (base scenario) · Net revenue per completed vehicle (lower sensitivity) · Net revenue per completed vehicle (upper sensitivity)
The $205 base ticket uses a StartFigures package mix applied to one current operator's starting prices plus an authored $4.50 average size adjustment. The $145 and $325 bounds are sensitivities. The source does not establish national prices, local mix, retained checkout amounts or realized revenue.
- Model assumption
Applies to: Completed vehicles per field day across one route (base scenario) · Completed vehicles per field day across one route (lower sensitivity) · Completed vehicles per field day across one route (upper sensitivity) · Trading days per week (base scenario) · Trading days per week (lower sensitivity) · Trading days per week (upper sensitivity) · Opening sales as a share of mature volume · Monthly increase toward mature volume · Forecast horizon (months)
The route-wide two-to-four completed vehicles, four-to-six field days and eighteen-month ramp are authored. Published package durations support a capacity test, while the equipment seller's broad throughput statement is not an independent study. Actual route, access, service, recovery and completion records must replace the inputs.
- Model assumption
Applies to: Monthly fixed operating costs · Contribution margin
The $9,600 mature monthly fixed-cost input equals Year-three payroll and other overhead divided by twelve. The 80% contribution margin is one minus the selected 20% sales-linked cost envelope. Published labor, payroll-tax, fuel, insurance and wastewater context identifies costs to validate but verifies neither selected input.