| Resin base, pigments, additives, packaging gallon can, and direct labor mix fill |
Variable |
Apply per unit produced: $6.25 interior, $7.75 exterior, $5.20 primer, $9.45 metal coating, and $6.85 wood finish in the first year. |
Averaging all formulas into one material rate and hiding product mix risk. |
| Sales Team Commissions |
Variable |
Deduct from revenue at 3.0% in the first year, declining to 2.0% by Year 5. |
Treating commissions as fixed payroll instead of a sales-linked charge. |
| Digital Marketing Spend |
Variable |
Model as revenue-linked selling spend at 1.5% in the first year, declining to 1.0% by Year 5. |
Putting marketing below break-even as optional when it scales with revenue in the model. |
| Factory utilities, equipment depreciation share, quality control overhead, maintenance share, and indirect manufacturing labor |
Variable |
Use the modeled revenue-linked rates: 0.2%, 0.1%, 0.1%, 0.1%, and 0.2% of revenue. |
Calling depreciation and overhead fixed when the model ties them to revenue. |
| Factory Rent and Administrative Office Rent |
Fixed |
Include $15,500 per month in operating break-even: $12,000 for factory rent plus $3,500 for office rent. |
Spreading rent per gallon and making break-even look better at higher volume. |
| Insurance, IT, compliance, legal, and lab supplies |
Fixed |
Include $4,200 per month: insurance $1,200, IT $800, compliance $500, legal $700, and lab supplies $1,000. |
Dropping smaller recurring expenses because each line looks immaterial alone. |
| Production Line Workers |
Semi-fixed |
Model salary in staffing steps, not per gallon, because headcount rises from 4.0 FTE in the first year to 8.0 FTE in Year 5. |
Treating all plant labor as variable and missing the step-up before capacity is full. |