Annual Contract Value (ACV) SaaS Unit Economics Calculator
Simulate annual contract economics, sales representative commissions, and multi-year customer lifetime value.
Parameters & Config
Average monthly subscription fee billed per active customer
Percentage of customers cancelling their subscription each month
Total sales and marketing expenditure required to acquire one customer
Percentage of subscription revenue retained after hosting and direct support costs
Total gross profit generated per customer over their active lifecycle
Benchmark metric for SaaS efficiency (Ideal: 3.0x to 5.0x)
Key Metrics & Sub-Totals
3 itemsCalculation Summary & Unit Breakdown
| Metric | Calculated Value | Notes / Logic |
|---|---|---|
| Monthly ARPU (Revenue/User) | $450.00 | Per user/month |
| Monthly Churn Rate | 1.5% | Customer attrition |
| Gross Margin Percentage | 82% | Cost of service deducted |
| Customer Lifespan | 66.7 months | 1 / Churn rate |
| Customer Acquisition Cost (CAC) | $2800.00 | Blended marketing + sales |
| Customer Lifetime Value (LTV) | $24600.00 | Total gross profit per customer |
| LTV to CAC Health Ratio | 8.79x | Benchmark: >3.0x |
| CAC Payback Period | 7.6 months | Benchmark: <12 months |
| Net LTV Profit Contribution | $21800.00 | LTV minus CAC |
Overview & Methodology
Mid-market SaaS companies selling $5,000 to $20,000 annual contracts experience lower churn (1% to 1.5% monthly equivalent) and higher upfront cash collection, funding predictable sales team expansion.
Mathematical Formulation
Monthly ARPU Equivalent = Annual ACV / 12. Contract LTV = (Monthly Equivalent × Gross Margin) / Monthly Churn.Optimization Best Practices
Structure sales commission plans to pay a higher percentage on multi-year commitments.
Include a mandatory 5% to 7% annual price increase clause in standard enterprise terms.
Track cash flow velocity: annual upfront billing eliminates working capital deficits during rapid scaling.
Frequently Asked Questions
Q.What is the LTV on a $5,400 ACV ($450/mo) with 1.5% monthly churn?
Monthly gross profit is $369 (82% margin). Divided by 0.015 churn, LTV is $24,600.00 across an average 66.7 month lifespan.
Q.What is the CAC payback period on a $2,800 acquisition cost?
Payback is achieved in 7.6 months ($2,800 / $369 monthly gross profit).
Q.What is the LTV:CAC ratio for this mid-market tier?
At an LTV of $24,600 and CAC of $2,800, the ratio is an outstanding 8.79x.