What the numbers represent
We model a defined U.S. business operation and state its scope on the idea page. Startup capital includes opening commitments and a working capital reserve. Revenue and income-statement expenses are annual amounts in whole U.S. dollars; per-unit rates retain their stated precision. Monthly fixed costs and contribution define the calculator's operating base. Each case explains whether its annual forecast shares that base or describes a separate scenario. Year 3 is our comparison year, not a guarantee that every business has reached maturity.
Source context and modeled inputs
Primary sources include public agencies such as BLS and SBA. Industry sources include associations and original surveys. Vendor sources include equipment suppliers and operating guides. We give primary evidence precedence when comparable figures conflict and explain differences in scope when comparing values.
We maintain an evidence-register entry for every numeric input. Entries marked Model assumption identify author-selected budgets, capacity targets and future growth. Exact supplier-derived values are labeled separately. Source notes explain what a reference supports, and access dates document when it was checked.
The opening and operating scenarios
We use low and high capital estimates to describe different premises, equipment condition and reserve requirements. These ranges represent project scopes rather than statistical confidence intervals. Price and throughput bounds show sensitivity cases, and the case methodology identifies the demand, capacity and staffing assumptions that depend on local evidence.
How operating break-even is calculated
Monthly sales equal average transaction value × daily transactions × operating days per week × 4.33. Break-even sales equal monthly fixed costs ÷ contribution margin. The opening ramp increases sales toward mature capacity; the first month that covers fixed costs is the reported operating break-even month.
The same formula runs for the displayed base result and interactive calculator. It holds fixed costs and contribution margin constant. Changing a price may change real demand or cost percentages; the simplified calculator does not predict those effects.
EBITDA, owner income and payback
EBITDA subtracts cost of sales, payroll and operating overhead from revenue. It excludes financing, income tax, depreciation and amortization. Our scenarios include working-owner labor in payroll where applicable. Distributions depend on debt service, working capital, replacement spending and taxes. Operating break-even is not startup-investment payback.
The Bakery reference case
We used the Bakery scenario as the reference case for the site's capital schedule, annual P&L and calculator. Its approved inputs remain the baseline for calculation checks. One operating base links the first 36 monthly periods to Years 1–3 of the annual forecast, with whole-dollar rounding. Years 4–5 use a separate annual growth and cost schedule. The Bakery reconciliation compares the linked periods. These values describe an illustrative bakery operation, not measured national averages.
How Business Scores differ from financial results
The five-component Business Score is an editorial assessment of a defined operating scope. Its weighted total does not measure the probability of success. Each component has its own rationale, evidence basis and assessment date. Catalog ranks compare completed assessments under the same rubric; an unassessed case is excluded.
Read the scoring weights, directions and anchors →
Review and accountability
We use AI assistance to organize research, prepare calculation code and write English explanations. Automated checks verify numerical evidence coverage, calculation consistency and internal links. Each analytical page displays its recorded authorship and human-review status, as explained in AI assistance and human review.
The editorial standards describe how we distinguish source evidence, authored assumptions and editorial judgments. The site profile states our operating scope and accountability, and the correction guidance explains how to report a specific statement with supporting evidence.
Before committing capital
Replace allowances with current equipment quotations, a lease proposal, a staffing roster and local demand observations. Test seasonality and slower collections in a monthly cash forecast. Keep a dated record of changes and their evidence.
Explore the model cases →