| Facility Rent |
Fixed |
Use the $12,000 monthly rent as baseline overhead from Month 1 through Month 60. |
Tying rent to visit volume when it stays flat in the planning range. |
| Utilities |
Semi-variable |
Model the $1,500 monthly base, then stress-test usage as exam room traffic rises. |
Treating the full utility bill as fixed while longer hours add usage. |
| Electronic Health Record (EHR) Software Subscription |
Fixed |
Hold the $2,500 monthly subscription as recurring overhead for break-even. |
Spreading it per patient and understating fixed monthly burn. |
| Year 1 Payroll |
Semi-fixed |
Model salary in staffing steps; first-year wages equal $1.15 million annually, or about $95,833 per month. |
Calling payroll variable even though hires are added by role and capacity step. |
| Medical Supplies Consumed |
Variable |
Apply the first-year 7.0% rate against service revenue because supply use rises with treatments. |
Budgeting supplies as a flat monthly line and missing volume pressure. |
| External Lab Testing Fees |
Variable |
Apply the first-year 5.0% rate to revenue tied to lab-related care. |
Counting lab send-outs twice, once in variable fees and again in vendor invoices. |
| Billing and Collections Fees |
Variable |
Use the first-year 4.0% rate because the fee moves with collected patient and payer revenue. |
Leaving collections fees below gross margin and overstating contribution. |
| IT Support & Security |
Semi-fixed |
Start with the $1,200 monthly support line, then step it up only when scale requires more coverage. |
Increasing it with every visit instead of with systems, staff, and device count. |