BASELINE
Current state
Revenue / month$423,936
Gross profit / month$228,925
Net profit / month$198,925
New orders / month2,880
LTV:CAC12.72
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Calculate SaaS unit economics: LTV, CAC, LTV/CAC ratio, payback period, and gross margin. Free online tool for SaaS startup financial modeling.
Model baseline, run what-if scenarios, and prioritize the highest-impact growth lever before shipping changes.
BASELINE
SCENARIO
ROAS
4,209.4%
Break-even ROAS
175.4%
CAC
$4
| Horizon | Best | Base | Worst |
|---|---|---|---|
| 3 months | $1,374,596 | $1,134,212 | $898,401 |
| 6 months | $2,898,634 | $2,355,634 | $1,837,839 |
| 12 months | $6,461,796 | $5,087,447 | $3,847,412 |
Cumulative net profit
Improve conversion mechanics
+$47,693
Improve retention/repeat
+$28,616
Increase qualified sessions
+$27,471
Lift average order value
+$18,314
Increase gross margin
+$12,718
Improve paid efficiency
+$1,440
Sample size is an estimate based on revenue-per-session effect translated into conversion uplift.
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SaaS unit economics measure profitability at the individual customer level. Key metrics: LTV (Customer Lifetime Value) = ARPU × Gross Margin % / Monthly Churn Rate. CAC (Customer Acquisition Cost) = Total Sales & Marketing spend / New customers acquired. LTV/CAC Ratio should be ≥3 for healthy SaaS. CAC Payback Period = CAC / (ARPU × Gross Margin %) — aim for under 12 months. Our calculator computes all four, plus quick ratio and magic number.
A healthy SaaS LTV/CAC ratio is 3:1 or higher. Below 3:1 means you're spending too much to acquire customers relative to their lifetime value. Above 5:1 may indicate under-investment in growth. The ratio varies by growth stage — early-stage startups often run below 3 temporarily.
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