| Office Lease |
Fixed |
Carry $6,500/month in baseline overhead from Month 1 through Month 60. |
Do not bury lease inside client projects. |
| Payroll |
Fixed |
Include $41,875/month in the first year before testing billable utilization. |
Do not omit founder-level salary. |
| Software Subscriptions CRM and PM Tools |
Fixed |
Use $1,200/month as recurring operating overhead in the break-even model. |
Do not ignore seat creep as staff grows. |
| Professional Indemnity Insurance |
Fixed |
Include $850/month as required monthly overhead, not project delivery spend. |
Do not treat insurance as optional. |
| Legal and Accounting Retainer |
Fixed |
Include $2,500/month as recurring overhead across the planning period. |
Do not exclude monthly retainers. |
| Market Data & Research Database Access |
Variable |
Model at 8% of first-year revenue, stepping down to 6% in the mature year. |
Do not call all research overhead. |
| Sales Commissions |
Variable |
Apply 10% of first-year revenue, then reduce to 7% by the mature year. |
Do not forget commissions when revenue scales. |
| Marketing and Brand Maintenance |
Semi-fixed |
Use $1,500/month, plus annual marketing budget planning tied to acquisition targets. |
Do not assume CAC is zero. |