It depends on your industry and customer LTV. A $300 CAC is excellent if LTV is $5,000, but disastrous if LTV is $200. Focus on the LTV:CAC ratio rather than absolute CAC.

What costs should I include in CAC?

Include all costs directly related to acquiring customers: ad spend, content production, event costs, sales team salaries and commissions, and marketing tools/software.

What is the LTV:CAC benchmark?

For SaaS and subscription businesses, 3:1 is commonly cited as the minimum healthy ratio. Below 3:1 suggests poor unit economics. Above 5:1 may indicate underinvestment in growth.

Should I separate marketing CAC from sales CAC?

For analysis, yes. Marketing CAC covers top-of-funnel spend. Sales CAC covers conversion costs. Together they give blended CAC. Breaking them out shows where to optimize.

How does CAC relate to payback period?

Payback period = CAC ÷ monthly gross profit per customer. If CAC is $600 and you earn $100/month gross per customer, payback is 6 months.

Does CAC include customer success or onboarding costs?

Some companies include onboarding in CAC; others treat it separately. Be consistent in your definition when comparing across periods.

Customer Acquisition Cost (CAC) Calculator

Marketing Spend

Total marketing spend in the period

Sales Spend

Sales team costs, commissions, tools

New Customers Acquired

Number of new customers in the same period

Formula

CAC = (Marketing Spend + Sales Spend) / New Customers

Sum all sales and marketing costs for a period. Divide by the number of new customers acquired in that same period.

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TL;DR

Enter your marketing spend, sales spend, and new customer count to calculate your Customer Acquisition Cost.

Enter marketing spend, sales spend, and how many new customers you acquired in the same period. Returns your Customer Acquisition Cost and a spend breakdown. The raw number matters less than the LTV:CAC ratio, a $300 CAC is fine if the customer is worth $2,000.

Customer Acquisition Cost (CAC) measures how much you spend on average to win one new customer. It is a foundational metric for any business that markets or sells. Keeping CAC below customer lifetime value (LTV) is essential for sustainable growth.

You came here because

Common situations

Marketing efficiency: Track whether CAC is rising or falling quarter over quarter as you scale campaigns.
LTV:CAC ratio: Divide customer lifetime value by CAC. A ratio above 3:1 is generally healthy.
Channel comparison: Calculate CAC separately for each marketing channel (Google Ads, social, email) to find your most efficient channels.
Investor reporting: CAC is a standard metric in SaaS and ecommerce investor metrics packages.

Under the hood

How the calculation works

1Enter your total marketing spend for the period (ads, content, events, tools).
2Enter your total sales spend (salesperson salaries, commissions, CRM tools).
3Enter the number of new customers acquired in that same period.
4The calculator sums the two spend figures and divides by new customer count.

Show me

A real example

Example: $12,000 in marketing + sales spend, 40 new customers

1Total spend = $8,000 + $4,000 = $12,000
2New customers = 40
3CAC = $12,000 / 40 = $300 per customer

Result: CAC = $300. Each new customer costs $300 to acquire.

Watch out for

What can go wrong

Only counting ad spend: CAC should include all sales and marketing costs: salaries, commissions, event costs, and software subscriptions. Ad spend alone understates the true cost of acquiring each customer.
Mismatched time periods: Always use spending and customer counts from the same period. Comparing Q1 spend to Q2 customers skews the number in whichever direction benefits the narrative.
Including returning customers: CAC is for new customers only. If you count renewals or repeat purchases in the denominator, you artificially lower the number and hide the true cost of growth.
Ignoring the LTV side: A $300 CAC is neither good nor bad on its own. Always read it alongside customer lifetime value. A $300 CAC with a $200 LTV is a loss at every sale.

Glossary

Related concepts

Term	Definition
Customer Lifetime Value (LTV)	Total revenue expected from one customer over their relationship with your business. LTV / CAC ratio above 3 is a common benchmark.
LTV:CAC ratio	How much value a customer generates relative to what it cost to acquire them. Below 1:1 means you spend more than you earn per customer.
Payback period	How long it takes to recoup CAC from a customer's revenue. Shorter is better; less than 12 months is healthy for most SaaS businesses.
Blended vs channel CAC	Blended CAC averages across all channels. Channel-specific CAC shows which sources are most efficient.

Make it better

Pro tips

Calculate CAC by channel: Blended CAC hides which channels are efficient. Run the calculation separately for paid search, social, events, and organic to find out where your best-value customers come from.
Track the trend, not just the number: CAC rising month over month is the real warning sign. A single month's spike could be a seasonal campaign. A consistent trend upward means the model is getting less efficient.
Build a simple LTV:CAC dashboard: Once you have CAC, divide your customer lifetime value by it. Update this ratio quarterly. It tells you whether growth is becoming more or less sustainable over time.
Include onboarding in your model: If your product requires significant setup, training, or professional services before a customer can use it, include those costs in your CAC calculation or track them as a separate line item.

Common questions

Frequently asked questions

For related calculations, try the Profit Margin, Break-Even Calculator, or ROI Calculator. Browse all Calculator Online calculators for the full catalog.

Methodology

This calculator uses the standard cac calculator formula. Results match those from established financial, scientific, and health references.

Reviewed by

Calculator Online Editorial Team. All formulas verified against authoritative sources before publication.

Last updated

2026-01-15