| Factory Rent |
Fixed |
Use $15,000 per month in fixed overhead from Month 1 through Month 60. |
Spreading rent across units and hiding the true monthly break-even floor. |
| Insurance Premiums and Software Licenses |
Fixed |
Include $2,000 per month together: $1,200 insurance plus $800 software. |
Treating small fixed tools as variable and understating required baseline sales. |
| Garment Materials and Packaging |
Variable |
Deduct per-unit inputs by product: $1.40 T-shirt, $3.90 hoodie, $5.00 denim jean, $3.25 dress, and $7.50 puffer jacket. |
Using one average material rate and ignoring packaging by garment type. |
| Direct Sewing Labor |
Variable |
Model direct labor per unit, from $0.30 for a basic T-shirt to $1.20 for a puffer jacket. |
Treating all labor as fixed because management payroll is salaried. |
| Sales Commissions and Client Sourcing Fees |
Variable |
Apply Year 1 selling fees at 4.5% of revenue: 3.0% commissions plus 1.5% sourcing fees. |
Forgetting that channel mix changes contribution margin before fixed costs are covered. |
| Utilities & Internet and Factory Utilities |
Semi-variable |
Keep $2,500 monthly as the base charge, then add factory utilities at 0.5% of revenue. |
Putting all utilities in fixed overhead and missing usage pressure as production rises. |
| Quality Control Overhead |
Semi-variable |
Model quality control overhead at 0.4% of revenue, and track rework outside the fixed payroll line. |
Burying scrap and rework in overhead, which makes margins look cleaner than operations are. |
| Equipment Maintenance Contracts and Production Supervisor Allocation |
Semi-fixed |
Use $1,500 monthly for maintenance contracts, then watch supervisor allocation at 0.7% of revenue as capacity steps up. |
Assuming capacity support grows smoothly instead of jumping when a new lead is needed. |