| Commercial Rent |
Fixed |
Use $3,500 per month in fixed overhead from Month 1 through Month 60. |
Spreading rent across units and making break-even look lower when sales rise. |
| Utilities |
Fixed |
Use $450 per month as fixed overhead within the model’s planning range. |
Changing utilities with every order when the model lists a flat monthly amount. |
| Store Manager |
Fixed |
Use $55,000 per year, or about $4,583 per month, as fixed staffing. |
Treating manager pay as variable labor tied to each sale. |
| Sales Associate Part Time |
Semi-fixed |
Use $25,000 per year at 0.8 FTE in the first year, then step up as FTE rises. |
Ignoring staffing step-ups as traffic grows. |
| Wholesale Cards & Stationery |
Variable |
Apply as revenue-linked cost of goods sold, from 7.0% of revenue in the first year to 5.0% in the fifth year. |
Treating the $20,000 opening inventory stock as recurring monthly cost of goods sold. |
| Wholesale Gift Items |
Variable |
Apply as revenue-linked cost of goods sold, from 3.0% of revenue in the first year to 2.0% in the fifth year. |
Using the same margin as cards instead of the gift-item rate. |
| Marketing & Promotions |
Variable |
Reduce contribution margin by 5.0% of revenue in the first year, falling to 3.5% in the fifth year. |
Putting all promotional spend in fixed overhead. |
| Payment Processing Fees |
Variable |
Apply 2.5% of revenue as a direct sales-linked fee across all five years. |
Leaving card fees out of contribution margin. |