| Office & Storage Rent |
Fixed |
Use $2,500 per month in overhead before calculating required gross profit. |
Counting rent as job-level spend instead of committed monthly overhead. |
| Core Vehicle Lease Payments |
Fixed |
Use $3,500 per month as fixed capacity, separate from fuel and maintenance. |
Treating vehicle lease payments as per-job fuel. |
| Specialized Supplies & PPE |
Variable |
Apply 10% of first-year revenue as job-level consumables. |
Treating disposable PPE as fixed overhead. |
| Bio-waste Disposal Fees |
Variable |
Apply 5% of first-year revenue because disposal rises with completed jobs. |
Using a flat monthly estimate that hides heavier remediation jobs. |
| Vehicle Fuel & Maintenance |
Variable |
Apply 6% of first-year revenue for job travel and usage. |
Blending fuel with vehicle leases and double-counting fleet expense. |
| Project-Specific Insurance & Permits |
Variable |
Apply 4% of first-year revenue when work requires job-specific coverage or permits. |
Putting project permits into general liability insurance. |
| Certified Biohazard Technician Salary |
Semi-fixed |
Model $65,000 annually per full-time equivalent, stepping up as technician headcount increases. |
Spreading payroll evenly across jobs before the next hire is needed. |
| Marketing Budget and CAC |
Semi-variable |
Start with the $15,000 first-year budget and test volume against $550 customer acquisition cost. |
Assuming every added lead converts without raising spend or CAC pressure. |