The simple break-even formula
Unit contribution equals average collected price minus variable cost per appointment and percentage compensation. When unit contribution is positive, break-even appointments equal fixed costs divided by unit contribution. The displayed appointment target rounds up because a fraction of an appointment cannot meet the full target.
Capacity check
Available appointment capacity is available hours divided by appointment time plus turnover. The calculator shows when the required number cannot fit. Real studios should allow for breaks, vacancy, seasonality, practitioner availability, resource conflicts, cancellations, and demand, not only theoretical open hours.
Example
If monthly fixed costs are $6,000, average collected price is $100, and entered variable costs are $25 with no separate percentage compensation, unit contribution is $75. Simple break-even is 80 appointments. At 75 occupied minutes each, that requires 100 occupied hours. If only 90 hours are truly available, the entered model is not feasible without changing price, cost, capacity, or mix.
What this first model does not do
It does not blend several services, room-rental income, packages, membership credits, gift-card timing, taxes, or owner take-home pay. A rental venue also must not treat renters’ gross client sales as its own service revenue. Model those separately or use an explicit weighted service mix.
Inputs commonly missed
- Insurance, utilities, booking and payment software, licenses, cleaning, linens, products, repairs, and marketing.
- Employer-related cost, paid non-treatment time, or payroll taxes where applicable.
- Discounts, refunds, package redemption, membership credits, payment processing, and unfilled cancellations.
- Different space occupancy and practitioner-active time during hair processing phases.
- Incomplete date coverage in recorded operating data.