| Production Facility Rent at $3,500/month |
Fixed |
Include the full monthly amount in overhead before calculating required gross profit. |
Spreading rent across units and making low-volume months look better. |
| High Speed Internet and Cloud at $250/month |
Fixed |
Model as a stable monthly operating charge across the planning range. |
Tying it to order count when the bill doesn’t move with each job. |
| General Manager at $85,000/year |
Semi-fixed |
Keep the salary fixed until staffing capacity changes, then add the next role or FTE step. |
Treating payroll, rent, and platform fees as one blended expense. |
| Print Production Lead at $55,000/year |
Semi-fixed |
Model as a staffing step because FTE rises from 1.0 to 2.0 in the third year and 3.0 in the fifth year. |
Using a smooth percentage of revenue instead of staffing jumps. |
| Premium Vinyl Stock at $0.10/unit |
Variable |
Add directly to unit-level COGS so each decal sold carries its material burden. |
Putting direct materials into fixed overhead and overstating margin at scale. |
| Packaging Envelopes at $0.05/unit |
Variable |
Apply per shipped unit, alongside labels and other fulfillment materials. |
Ignoring small per-unit items that add up at 50,000 first-year units. |
| E-commerce Platform Fees at 2.9% of revenue in the first year |
Variable |
Subtract as a sales-linked fee before measuring contribution margin. |
Modeling platform fees as fixed software instead of a revenue drag. |
| Factory Overhead at 1.0% of revenue |
Semi-variable |
Track as a production-load charge that rises with throughput, not as pure direct material. |
Folding it into rent and missing the load tied to higher production volume. |