Customer Acquisition Cost (CAC) is sales and marketing acquisition spend divided by new paying customers acquired. Use a consistent period and cost definition. Compare CAC with gross-profit LTV, payback, and cash needs. This calculator provides a cost-category breakdown and optional LTV:CAC and payback calculations; it does not calculate CAC for separate channels.
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You calculate CAC spend $42k · 100 new customers
pmtk → CAC = $420
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Customer Acquisition Cost (CAC) Calculator
What it costs to acquire one paying customer, blended across channels.
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Include acquisition-related salaries, ad spend, tools, content, and events for the period.
New paying customers from the same period. Exclude expansions and renewals.
For LTV:CAC ratio & payback period
Monthly revenue per customer, so payback is reported in months.
Your CAC
$—
Enter your spend and customer count, then click Calculate.
Why this matters
CAC is acquisition spending per new paying customer. Compare it with lifetime gross profit and payback, using matching customer groups. The result colors use fixed reference bands; appropriate targets depend on your sales model and cash needs.
CAC = (Sales + Marketing spend) ÷ NewCustomers
Include acquisition-related salaries, tools, ad spend, content, and overhead for the same reporting period.
Understanding Customer Acquisition Cost (CAC) for SaaS Businesses
Customer Acquisition Cost (CAC) is the cost of acquiring a new customer, including sales and marketing expenses. Compare it with customer value when assessing acquisition spending.
CAC Formula and Calculation
The standard CAC formula is: CAC = Total Sales & Marketing Costs ÷ Number of New Customers Acquired
Include all acquisition costs: sales team salaries, marketing spend, advertising, content creation, tools, software, and overhead. Counting only direct ad spend leaves out these other acquisition costs.
CAC by Business Model
The figures below are illustrative ranges only, and actual CAC depends on channel, ACV, and go-to-market motion.
- B2B SMB SaaS: $100 - $500 (illustrative)
- B2B Mid-Market: $1,000 - $5,000 (illustrative)
- B2B Enterprise: $5,000 - $50,000+ (illustrative)
- B2C SaaS: $50 - $200 (illustrative)
Benchmarkit's 2025 report found a 2024 median of $2.00 in sales & marketing expense per $1 of new-customer ARR. This ratio uses revenue, not the customer-count denominator in CAC.
LTV:CAC Ratio Analysis
The LTV:CAC ratio compares estimated lifetime gross profit with acquisition cost.Bessemer uses 3:1 or higher as an operating target for cloud companies. A high ratio alone does not justify more spending; check retention, payback, and the cost of acquiring additional customers.
CAC Payback Period
CAC payback period measures how long it takes to recover your customer acquisition investment.Bessemer's operating targets vary by segment: under 12 months for SMB-focused SaaS, under 18 months for mid-market, and under 24 months for enterprise. Actual cash availability also depends on payment timing and other operating costs.
Optimizing Customer Acquisition Cost
Review channel performance, conversion rates, sales efficiency, referrals, and organic acquisition when looking for ways to reduce CAC. Compare changes in CAC with LTV so lower acquisition costs do not hide a decline in customer value.
What is Customer Acquisition Cost (CAC)?
CAC is total sales and marketing acquisition costs divided by the number of new customers acquired in the same period. Use it to assess the cost of acquiring customers.
CAC Formula
CAC = Total Sales & Marketing Spend / New Customers Acquired
Targets by customer segment
Bessemer targets CAC payback below 12 months for SMB, 18 for mid-market, and 24 for enterprise cloud sales.
Bessemer: Scaling to $100 MillionRate this calculator:
Blended CAC summarizes acquisition spending across the business. Separate channel or customer-segment analyses can reveal differences that the average hides. Use the same attribution method and compare the value of the customers acquired.
CAC benchmarks by segment
| Segment | Benchmark |
|---|---|
| B2B SaaS (Self-Service) | $100 - $500 |
| B2B SaaS (Inside Sales) | $5,000 - $15,000 |
| B2B SaaS (Enterprise) | $15,000 - $100,000+ |
| B2C SaaS | $10 - $200 |
Common questions
What is Customer Acquisition Cost (CAC)?
Customer Acquisition Cost (CAC) is the total cost a company spends to acquire one new paying customer. It varies widely by segment: a self-serve B2C product and an enterprise SaaS deal can differ by orders of magnitude. CAC is calculated by dividing all sales and marketing expenses by the number of new customers acquired in a given period. The calculator can show a cost breakdown and, when LTV is entered, an LTV:CAC comparison.
How do you calculate Customer Acquisition Cost?
CAC = Total Sales & Marketing Costs ÷ Number of New Customers Acquired. Include all costs: salaries, ads, tools, content creation, and overhead. For example, if you spend $10,000 and acquire 50 customers, your CAC is $200. PM Toolkit's CAC calculator computes this with LTV:CAC ratio analysis built in.
What is a good CAC for SaaS companies?
First Page Sage’s 2019–2024 B2B SaaS client data reports average fintech CAC of $1,461 for small-business customers, $4,923 for middle-market customers, and $14,774 for enterprise customers, averaged across marketing channels. Its report does not disclose sample size, customer-size thresholds, or itemized costs. Use these as vendor-client comparisons rather than universal targets; assess gross margin and payback as well.
What is LTV:CAC ratio and why is it important?
LTV:CAC compares estimated customer lifetime value with acquisition cost. Bessemer uses 3:1 or higher as a cloud-company operating target. The ratio depends on the LTV method and retention assumptions, and does not show when cash is recovered. Read it with gross-margin-adjusted payback and customer segment.
How can I reduce my Customer Acquisition Cost?
Look for ways to convert more prospects with the same sales and marketing spend. That could mean improving your sales process, putting more effort into channels that work, or improving referrals and content. Reducing churn is a separate way to improve the unit economics of the customers you acquire.
How long should CAC payback take?
Bessemer Venture Partners (Scaling to $100 Million) sets a payback ladder by segment: SMB SaaS under 12 months, mid-market under 18, and enterprise under 24. The widely cited under-12-months gold standard applies to SMB-focused SaaS, not every segment, since larger contracts justify a longer payback. PM Toolkit calculates CAC payback automatically alongside LTV:CAC ratios.