CAC Payback Period

What is CAC Payback Period?

The CAC payback period is the number of months required for a company to earn back the cost of acquiring a single customer. It is calculated by dividing the customer acquisition cost by the average monthly gross margin per customer.

Why It Matters

• A shorter payback period improves cash flow and allows a business to reinvest capital into growth more quickly.

• It serves as a critical efficiency metric for SaaS companies to determine the sustainability of their marketing spend.

• Investors use this metric to evaluate the capital efficiency and scalability of a business model.