Customer Acquisition Cost Calculator
Calculate the true cost to acquire a single new customer by dividing all acquisition-related spending — ads, sales team, and tools — by the number of customers won. Essential for comparing CAC against customer lifetime value to assess business sustainability.
About this calculator
Customer Acquisition Cost (CAC) is one of the most critical metrics in growth marketing, measuring how efficiently a business converts spending into paying customers. The formula is: CAC = (adSpend + salesTeamCost + marketingToolsCost) / newCustomers. Ad spend covers paid media placements; sales team cost includes salaries, commissions, and benefits for quota-carrying staff; and marketing tools cost captures software subscriptions like CRMs, analytics platforms, and automation tools. Dividing the sum of these costs by the number of new customers acquired in the same period gives a per-customer acquisition cost. CAC is most valuable when compared to Customer Lifetime Value (LTV) — a healthy SaaS business typically targets an LTV:CAC ratio of 3:1 or higher, while e-commerce businesses often aim for payback within 6–12 months.
How to use
In a given month, your business spends $8,000 on Google Ads, pays $5,000 in sales team costs, and subscribes to $1,000 of marketing tools — total spend = $14,000. That month you acquire 70 new customers. CAC = ($8,000 + $5,000 + $1,000) / 70 = $14,000 / 70 = $200 per customer. If your average customer generates $600 in lifetime value, your LTV:CAC ratio is 3:1, which sits at the minimum healthy threshold. Reducing CAC to $150 through better ad targeting or a higher-converting landing page would improve the ratio to 4:1, materially strengthening unit economics.
Frequently asked questions
What is a good customer acquisition cost for my industry?
CAC benchmarks vary enormously by sector. B2B SaaS companies commonly see CACs of $200–$1,500 depending on deal size, while e-commerce brands often target CACs below $50 for fast-moving consumer goods. The number in isolation is less meaningful than the LTV:CAC ratio — if your CAC is $500 but customers spend $5,000 over their lifetime, the unit economics are strong. Free resources like ProfitWell's benchmark reports and First Page Sage's annual CAC studies provide industry-specific ranges that make useful starting reference points.
How does sales team cost affect customer acquisition cost calculations?
Many businesses omit sales team costs from CAC, which leads to a systematic underestimate — especially in B2B where sales cycles are long and headcount is significant. Including salaries, commissions, benefits, and management overhead gives a fully-loaded CAC that accurately reflects the true cost of growth. A common approach is to prorate total sales department costs by the percentage of time the team spends on new business versus account management. If 70% of your sales team's time is spent acquiring new customers, include 70% of their fully-loaded cost in the CAC numerator.
When should I recalculate customer acquisition cost and how often?
CAC should be recalculated at least monthly to catch shifts in ad auction prices, sales team efficiency, or product-market fit. Quarterly recalculations are the minimum for strategic planning. CAC tends to increase over time as a brand exhausts its highest-intent audience segments — a pattern called audience saturation — so tracking the trend matters as much as the absolute number. If CAC rises more than 20% quarter-over-quarter without a corresponding improvement in LTV, it is a signal to audit targeting, creative quality, or the sales qualification process.