SaaS Pricing Calculator

SaaS unit economics determine whether your business model is sustainable and scalable. The three metrics that matter most are Monthly Recurring Revenue (MRR), the ratio of Customer Lifetime Value to Customer Acquisition Cost (LTV:CAC), and the CAC payback period. Together, these metrics tell you how much revenue each customer generates, whether you can profitably acquire more customers, and how long it takes to recoup your acquisition investment.

This calculator models the full picture — from pricing and customer count through churn rates and gross margins to LTV, CAC payback, and monthly profit. Unlike simpler MRR calculators, it lets you simulate different pricing strategies and compare scenarios side by side to find the optimal balance between growth and profitability.

How LTV:CAC Ratio Works

The LTV:CAC ratio compares the total gross profit a customer generates over their lifetime to the cost of acquiring them. A ratio of 3:1 is the widely accepted benchmark — meaning each customer should generate three times more value than they cost to acquire. Below 1:1, you are losing money on every customer. Above 5:1, you may be under-investing in growth. The formula is LTV = Monthly Price x Average Lifetime Months x Gross Margin, then LTV:CAC = LTV / CAC. To benchmark your SaaS metrics against competitors in your space, Semrush provides competitive intelligence to help you price strategically and position your product.

The Impact of Churn on SaaS Growth

Churn is the silent killer of SaaS businesses. A 5% monthly churn rate means you lose half your customers every year and must replace them just to maintain flat revenue. Reducing churn from 5% to 3% increases average customer lifetime from 20 months to 33 months — a 65% increase in LTV with zero additional acquisition cost. This is why the most successful SaaS companies obsess over retention before scaling acquisition. For competitive intelligence on how leading SaaS companies in your space retain customers, try Semrush's market analysis tools to research competitor strategies.

Optimizing Your Pricing Strategy

Most SaaS companies underprice their product. A 10% price increase with no change in churn or acquisition flows directly to the bottom line and increases both MRR and LTV proportionally. Use the scenario comparison feature in this calculator to model the impact of price changes on your unit economics. Test different price points, compare the resulting LTV:CAC ratios, and find the sweet spot where you maximize revenue without increasing churn.