| Store Lease/Rent |
Fixed |
Include $5,000 per month in fixed overhead from Month 1 through Month 60. |
Spreading rent across each sale and understating the sales needed before rent is covered. |
| Utilities |
Semi-variable |
Start with the $800 monthly base, then flex usage as store hours and customer traffic rise. |
Treating the full bill as fixed while weekend and mature-year traffic increase usage. |
| Store Manager Payroll |
Fixed |
Model 1.0 full-time equivalent at $65,000 per year as monthly fixed labor. |
Tying manager pay directly to sales even though the role is staffed every month. |
| Expert Sales Associate Staffing |
Semi-fixed |
Add labor in staffing steps: 1.5 FTE in the first year, rising to 3.0 FTE by the stabilized period. |
Assuming payroll moves penny-for-penny with sales instead of increasing by staffing level. |
| Wholesale Inventory |
Variable |
Apply as cost of goods sold: 12.0% of sales in the first year, improving to 10.0% in the mature year. |
Treating opening inventory as monthly operating break-even instead of working capital. |
| Inbound Shipping & Handling |
Variable |
Apply to sales volume: 1.0% of sales in the first year, then 0.8% in the mature year. |
Hiding freight inside fixed overhead and missing the margin impact of higher unit volume. |
| Payment Processing Fees |
Variable |
Apply as a revenue-linked fee: 2.5% of sales in the first year, declining to 2.0% in the mature year. |
Using a flat monthly estimate and overstating contribution margin on card-heavy sales. |
| Sales Commissions |
Variable |
Apply to commissioned sales: 3.0% in the first year, declining to 2.5% in the mature year. |
Putting commissions into fixed payroll and missing the true variable drag on each sale. |