| Facility Rent |
Fixed |
Use $6,000/month as stable overhead from Month 1 through Month 60. |
Spreading rent across jobs and making margin look better when volume rises. |
| Utilities |
Semi-fixed |
Start with $1,200/month, then step it up if shop activity or warehouse use rises. |
Treating the full bill as fixed when longer repair hours drive usage. |
| Insurance Premiums |
Fixed |
Use $1,800/month as recurring monthly overhead in the break-even base. |
Leaving insurance out because it does not attach to one repair ticket. |
| CRM and Software Subscriptions |
Fixed |
Use $800/month as a fixed operating system cost for scheduling, tracking, and customer records. |
Classifying software as variable even when the subscription does not move with each job. |
| Office Supplies |
Semi-variable |
Use $400/month as the base, with small increases as tickets, invoices, and technician support activity grow. |
Ignoring small usage-linked items that add up as service volume scales. |
| Professional Fees |
Semi-fixed |
Use $1,000/month as a base, then step it up when accounting, legal, or compliance work expands. |
Assuming advisory fees stay flat after staffing and revenue increase. |
| Spare Parts and Materials |
Variable |
Model as 5.5% of first year revenue, improving to 3.5% by the mature year. |
Treating parts markup as pure profit before travel, rework, and replacements. |
| Fuel and Travel Expenses |
Variable |
Model as 3.5% of first year revenue, falling to 2.0% by the mature year as routing improves. |
Pricing service calls without the drive time and mileage needed to reach the equipment. |