Auto Detailing Business input evidence register
44 numeric input paths with their assumptions, calculation bases and cited sources.
Case updated September 11, 2026. This technical appendix accompanies 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.
A linked reference can support scope without confirming an exact forecast. Assumption entries identify values that still require local validation. Each field path identifies an input in the common business record.
- Model assumption
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.
capital.total · capital.low · capital.high · capital.items.1.amount · capital.items.2.amount · capital.items.3.amount · capital.items.4.amount · capital.items.5.amount · capital.items.6.amount
- Source-based input
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.
capital.items.0.amount
- Model assumption
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.
forecast.years.0.revenue · forecast.years.1.revenue · forecast.years.2.revenue · forecast.years.3.revenue · forecast.years.4.revenue
- Model assumption
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, refunds or rework for this van.
forecast.years.0.costOfSales · forecast.years.1.costOfSales · forecast.years.2.costOfSales · forecast.years.3.costOfSales · forecast.years.4.costOfSales
- Model assumption
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.
forecast.years.0.payroll · forecast.years.1.payroll · forecast.years.2.payroll · forecast.years.3.payroll · forecast.years.4.payroll
- Model assumption
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.
forecast.years.0.occupancyAndOther · forecast.years.1.occupancyAndOther · forecast.years.2.occupancyAndOther · forecast.years.3.occupancyAndOther · forecast.years.4.occupancyAndOther
- Model assumption
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.
unitEconomics.driver.model · unitEconomics.driver.low · unitEconomics.driver.high
- Model assumption
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.
unitEconomics.volume.model · unitEconomics.volume.low · unitEconomics.volume.high · unitEconomics.daysPerWeek.model · unitEconomics.daysPerWeek.low · unitEconomics.daysPerWeek.high · unitEconomics.ramp.startShare · unitEconomics.ramp.stepPerMonth · unitEconomics.ramp.horizonMonths
- Model assumption
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.
unitEconomics.fixedCostsMonthly · unitEconomics.contributionMargin