| Office Rent |
Fixed |
Use $3,000/month as recurring overhead from Month 1 through Month 60. |
Spreading rent across transactions and making margin look worse. |
| Legal & Compliance |
Fixed |
Use $1,500/month as fixed operating overhead for the full model period. |
Treating compliance as optional until donation volume rises. |
| Platform Maintenance |
Fixed |
Use $2,000/month as the base platform upkeep charge in break-even. |
Mixing base maintenance with usage-based hosting fees. |
| Payment Processing Fees |
Variable |
Apply the percentage to transaction value, starting at 1.8% in the first year. |
Modeling processing as flat overhead instead of per-dollar volume. |
| Server Hosting & CDN |
Variable |
Apply the usage-linked percentage to revenue, starting at 1.0% in the first year. |
Assuming hosting stays flat as traffic and donations scale. |
| Marketing for User Acquisition |
Variable |
Model as activity-linked spend, starting at 8.0% in the first year and declining over time. |
Combining CAC budgets, payroll, and transaction fees into one line. |
| Non-Profit Relations & Support |
Variable |
Model as volume-linked support spend, starting at 4.0% in the first year. |
Leaving partner support out of contribution margin. |
| Customer Support Specialist |
Semi-variable |
Add support capacity after Month 13 as donor and partner activity grows. |
Keeping support at zero after launch and overstating break-even profit. |