What Is Customer Acquisition Cost (CAC)? is Customer Acquisition Cost (CAC) is the total cost of acquiring a new customer, calculated by dividing all sales and marketing expenses by the number of new customers acquired in a given period.
CAC tells you what it costs to win a customer. It's the denominator in unit economics: if you spend more to acquire a customer than they'll ever pay you, your business model doesn't work. RevOps tracks CAC because it connects marketing spend, sales productivity, and revenue efficiency into a single number.
The Formula
CAC = (Total Sales + Marketing Spend) / Number of New Customers Acquired
Include salaries, commissions, ad spend, tools, events, content production, and overhead. Don't cherry-pick. The honest number is the useful number.
CAC Benchmarks by Segment
SMB (self-serve/PLG): $200-$2,000 CAC
Mid-market (inside sales): $5,000-$20,000 CAC
Enterprise (field sales): $20,000-$100,000+ CAC
The absolute number matters less than the ratio. CAC relative to Customer Lifetime Value (LTV) is the metric that determines business viability.
CAC Payback Period
CAC Payback = CAC / (Monthly Revenue per Customer x Gross Margin)
This tells you how many months it takes to recoup the acquisition cost. Best-in-class SaaS companies recover CAC in 12-18 months. Above 24 months signals a problem with either acquisition efficiency or monetization.
Reducing CAC
Improve lead quality (better targeting reduces wasted sales effort)
Shorten sales cycles (faster closes mean less cost per deal)
Increase win rates (more deals from the same pipeline)
Scale content and PLG motions (lower marginal cost per lead)
The standard benchmark is 3:1 or higher (LTV should be at least 3x CAC). Below 1:1 means you're losing money on every customer. Between 1:1 and 3:1 means the business works but isn't efficient. Above 5:1 may indicate you're underinvesting in growth and leaving market share on the table.
Should CAC include customer success costs?
Traditional CAC only includes sales and marketing costs. However, 'fully loaded CAC' or 'blended CAC' sometimes includes onboarding and CS costs that are necessary to activate the customer. Be consistent in how you calculate it, and always specify which costs are included when reporting.
