SaaS Pricing Tier & Margin Calculator
Model SaaS recurring revenue (MRR/ARR), gross margin percentages, customer lifetime value (LTV), and CAC payback economics.
Pricing Tier & Cost Inputs
Unit Economics & PaybackHigh Growth (3.0x+)
Venture-backed and profitable bootstrapped SaaS businesses aim for 75%โ85% gross margins. If gross margin falls under 65%, review LLM inference token usage or infrastructure optimizations.
SaaS Unit Economics & Margin Formula
MRR = Price ร Accounts; Gross Margin % = (MRR โ COGS) / MRR ร 100; LTV = (Price ร Gross Margin %) / Churn Rate %; LTV:CAC = LTV / CAC- Monthly Recurring Revenue (MRR): Predictable subscription revenue generated per month.
- Cost of Goods Sold (COGS): Direct variable cloud hosting (AWS/GCP/Azure), AI LLM API inference tokens, payment gateway fees, and allocated Tier 1 support engineering salaries.
- Gross Margin %: Percentage of revenue remaining after direct hosting and support costs (SaaS benchmark target is 75%โ85%).
- Customer Lifetime Value (LTV): Total gross profit expected from a single customer over their entire subscription lifespan.
- CAC Payback Period: Number of months of gross profit required to recover customer acquisition costs (marketing + sales).
Step-by-Step Worked Example
Calculation Steps:
- MRR = 400 accounts ร $49.00 = $19,600.00 / month ($235,200.00 ARR)
- Total Monthly COGS = (400 ร $7.00) + $3,000 = $2,800 + $3,000 = $5,800.00
- Gross Profit = $19,600 โ $5,800 = $13,800.00 / month ($165,600.00 / year)
- Gross Margin % = ($13,800 / $19,600) ร 100 = 70.4% (Healthy SaaS Benchmark)
- Customer Lifespan = 1 / 0.025 = 40.0 months
- Customer Lifetime Value (LTV) = ($49 ร 70.4%) ร 40.0 = $34.50/mo ร 40 = $1,380.00
- CAC Payback Period = $350 CAC / $34.50 monthly gross profit = 10.1 months
- LTV / CAC Ratio = $1,380 / $350 = 3.94x (High Growth Target >= 3.0x)
How to Use This Calculator
- 1Enter your monthly subscription tier price per user or account in your chosen currency.
- 2Input active paying customers or projected subscriber headcount.
- 3Set variable hosting, AI token, and database COGS per customer per month.
- 4Input allocated support salaries, monthly churn percentage, and blended acquisition cost (CAC).
- 5Review the gross margin health indicator, CAC payback in months, and recommended annual plan discount rate.
Assumptions & Limitations
- Assumes constant average revenue per account (ARPU) without modeling mid-contract expansion or upselling.
- LTV formula uses Gross Margin (not top-line revenue) for investor-grade accuracy.
- Does not deduct below-the-line operating expenses (G&A, R&D, executive salaries).
Frequently Asked Questions
What is a good gross margin for a SaaS business?
The venture capital gold standard for pure software SaaS is 75% to 85% gross margin. Modern AI-wrapper SaaS products often run between 65% and 75% due to LLM token API and GPU inference costs.
What is the ideal LTV:CAC ratio for software startups?
An LTV to CAC ratio of 3.0x or higher is considered healthy for venture-backed and bootstrapped companies. A ratio below 2.0x indicates unsustainable marketing spend or excessive churn, while above 5.0x suggests you may be under-investing in growth.
How does offering an annual discount impact SaaS cash flow?
Offering a 15% to 20% discount for upfront annual billing reduces customer churn by 40% to 50% and provides immediate upfront working capital, which can be reinvested into CAC without dilutive equity funding.
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