Free SaaS Growth Tool · Synthetic Benchmarks
Paid Media Growth Projection
See how CAC payback, churn, gross margin, and reinvestment change the path from paid media spend to customers and recurring revenue.
No company data: every default is rounded, generic, and illustrative. Replace it with your own verified assumptions.
01 / Assumptions
Build The Projection.
02 / Scenarios
Monthly Recurring Revenue
03 / Comparison
Scenario Summary.
| Payback | Modeled CAC | Spend Cap Hit | Month 12 MRR | Month 12 Customers | End MRR | End ARR | End Customers | Steady-State ARR |
|---|
How The Math Works
A Projection, Not A Promise.
CAC from payback
The model estimates maximum CAC as payback months × monthly ARPU × gross margin. A shorter payback buys more customers with the same budget; a longer payback buys fewer.
Monthly growth loop
Each month, existing customers are reduced by the churn assumption, new customers are added from paid spend divided by modeled CAC, and recurring revenue is calculated from the remaining customer base.
Reinvestment
The next month's paid media budget uses the selected share of modeled gross profit, with starting spend as the floor and the daily cap as the ceiling. The model excludes operating expenses, sales capacity, delayed cash collection, channel saturation, and changes in conversion quality.
Use responsibly
Defaults are generic synthetic benchmarks—not actual business data, industry guarantees, or recommendations. Replace every assumption with verified company inputs and use scenario ranges rather than treating a single output as a forecast.
The Spreadsheet Is Not The Strategy.