SaaS Magic Number & Go-To-Market Efficiency Calculator
Calculate your SaaS Magic Number. Measure sales and marketing efficiency by comparing quarterly revenue growth against acquisition expenditures.
Calculated Results
SaaS Magic Number
1.2x
Greater than 1.0: Outstanding go-to-market efficiency; accelerate acquisition spend.
About this tool
The SaaS Magic Number—developed by venture capitalist Lars Leckie—is the standard metric used by enterprise software investors to gauge go-to-market (GTM) efficiency. It evaluates how effectively sales and marketing expenditures translate into net-new recurring revenue by comparing the change in quarterly revenue against the prior quarter's total sales and marketing spend. A Magic Number above 1.0 indicates outstanding sales efficiency: every dollar invested in sales and marketing yields more than a dollar of annualized recurring revenue, signaling that the company should immediately pour more capital into acquisition. A Magic Number below 0.75 indicates friction in the acquisition funnel, suggesting the company should refine product-market fit and retention before accelerating spend. Use this calculator to evaluate your GTM efficiency.
How It Works
- 1Input your current quarter revenue (Q_current).
- 2Input your previous quarter revenue (Q_previous).
- 3Input your previous quarter total sales and marketing expense.
- 4Review your calculated SaaS Magic Number and strategic investment guidance.
Formula & Math
Transparent LogicMagic Number = ((Current Quarter Revenue - Previous Quarter Revenue) × 4) / Previous Quarter S&M Spend
Worked Practical Example
Q1 revenue is $100,000; Q2 revenue is $130,000; Q1 sales and marketing expense was $100,000.
Calculation / Steps
(($130,000 - $100,000) × 4) / $100,000 = ($30,000 × 4) / $100,000 = $120,000 / $100,000 = 1.20
Expected Result
Magic Number of 1.20 (Outstanding efficiency; green light to scale sales investments).
Frequently Asked Questions
What do different Magic Number ranges indicate?+
Below 0.75: Fix retention and conversion. 0.75 to 1.0: Good efficiency, scale steadily. Above 1.0: Outstanding efficiency, step on the gas.
Why does the formula multiply by 4?+
Multiplying quarterly growth by 4 annualizes the run-rate increase, allowing direct comparison against annual sales investment.
How does churn suppress the Magic Number?+
High churn drags down net quarterly revenue growth, artificially depressing your Magic Number even if gross sales performance was strong.
Automate retention on your cancel button
BoolBul elevates your Magic Number by preventing churn from eroding quarterly net-new revenue gains.
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