SaaS CAC calculator. Know what a customer really costs.

A SaaS CAC calculator works out your customer acquisition cost by dividing total sales and marketing spend by the number of new customers won in the same period. It is the fastest way to see what a customer actually costs you to acquire. The number only becomes useful when you compare it to your customer lifetime value and payback period, which is why CAC is best read alongside those metrics rather than alone.

Add up all fully loaded sales and marketing spend for a period, including ad spend, salaries, tools, agency fees and overhead, then divide by the number of genuinely new customers acquired in that same period. The formula is simple, the discipline is in the inputs: leaving out sales salaries or counting expansion as new customers both distort the result. Use loaded spend and new logos only.

There is no universal good CAC, because it depends entirely on your deal size and retention. A $1,500 CAC is excellent for a $50,000 enterprise contract and ruinous for a $300 annual subscription. The healthier question is your LTV to CAC ratio, where roughly 3 to 1 or better is the common target and your payback period, where under 12 months is a typical benchmark for efficient SaaS.

Yes. A fully loaded CAC includes sales and marketing salaries, not just media and ad spend. Leaving salaries out produces a flattering but misleading number that hides the real cost of growth. The whole point of CAC is to understand what acquiring a customer truly costs and for most SaaS the people are a larger cost than the ads. Include them for an honest figure.

CAC is one leg of a three-part picture. LTV to CAC ratio tells you whether a customer is worth more than they cost to acquire, with 3 to 1 a common healthy target. CAC payback period tells you how many months of revenue it takes to earn the CAC back, with under 12 months typical for efficient SaaS. CAC alone is just a cost. Those ratios tell you whether the cost is worth it.