| Office Rent |
Fixed |
Use $5,000 per month in fixed overhead from Month 1 through Month 60. |
Spreading rent across bookings and hiding the real monthly hurdle. |
| Utilities & Internet |
Fixed |
Use $800 per month as fixed overhead for the relevant planning range. |
Treating basic office connectivity as order-driven spend. |
| Legal & Accounting Fees |
Fixed |
Use $1,500 per month in fixed operating overhead. |
Leaving recurring professional fees out of break-even math. |
| CEO, Head of Engineering, and Head of Marketing salaries |
Semi-fixed |
Model the first-year leadership payroll as a capacity step, not per booking. |
Dividing executive salaries by orders and calling them variable. |
| Payment Processing Fees |
Variable |
Deduct as a revenue-linked expense: 9.5% in the first year, falling to 4.0% by the mature year. |
Burying processing fees inside fixed overhead. |
| Platform Server Hosting |
Variable |
Deduct as usage-linked platform expense: 2.0% in the first year, falling to 0.6% by the mature year. |
Calling all hosting fixed when usage rises with bookings. |
| Affiliate Commissions |
Variable |
Deduct from contribution margin: 6.0% in the first year, falling to 2.0% by the mature year. |
Including sales commissions in fixed overhead and overstating margin. |
| Buyer and seller acquisition budgets |
Semi-variable |
Model planned annual spend separately from unit acquisition cost: buyer CAC starts at $20, seller CAC starts at $500. |
Treating the full marketing budget as fixed while ignoring volume-based acquisition economics. |