Metrics

    What Is CAC (Customer Acquisition Cost) (Customer Acquisition Cost)?

    Customer Acquisition Cost (CAC) is the total marketing + sales spend divided by the number of new customers acquired in the same period. Unlike CPA (platform-reported per-action cost), CAC is the fully-loaded company-level number your CFO and board use to decide funding decisions.

    Md Morshed Parvej Patwary
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    Also known as: customer acquisition cost, cac formula, cac payback, cac meaning. This page answers "what is CAC (Customer Acquisition Cost)", CAC (Customer Acquisition Cost) formula,CAC (Customer Acquisition Cost) calculation, and CAC (Customer Acquisition Cost) benchmarks for Bangladesh and global performance marketing teams.

    Formula

    CAC = (Marketing Spend + Sales Spend) ÷ New Customers Acquired

    Worked example

    In a quarter you spend $120K on ads, $30K on agency fees, $15K on tools, $75K on SDR salaries, $240K total. You add 400 new customers. CAC = 240,000 ÷ 400 = $600. Compare that to LTV, if it's $2,400, LTV:CAC = 4 and you can scale. If LTV is $1,000, it's 1.7 and you have a payback problem.

    Benchmarks

    • SaaS: healthy LTV:CAC ratio 3:1 or better.
    • DTC: contribution margin per first order should recover 40 to 70% of CAC.
    • Payback period: < 12 months for VC-scale; < 6 months for bootstrapped.
    First Page Sage's B2B benchmark places blended CAC medians at $536 for SaaS, $862 for financial services, and $394 for ecommerce, with paid channels 30-60% higher than organic.
    Source: First Page Sage CAC Benchmarks (2024)

    Why it matters

    CAC is the honest scale metric. Platform-reported CPA can drop while CAC creeps up, because CAC includes agency, tools, and sales. Only CAC tells you whether growth is profitable at the company level.

    Common mistakes

    • 1.Confusing CAC and CPA. CPA is per platform; CAC is company-level fully loaded.
    • 2.Not including sales spend. In B2B, sales often dwarfs marketing, excluding it halves CAC on paper.
    • 3.Blended CAC only. Segment by channel + cohort for real insight.

    Put CAC (Customer Acquisition Cost) to work

    Free calculators

    LTV:CAC Calculator

    FAQs about CAC (Customer Acquisition Cost)

    CAC vs CPA, what's the difference?

    CPA is per-platform, per-action, ad spend only. CAC is company-wide, per-customer, fully-loaded. CAC is always higher than CPA, sometimes by 2×.

    How do I lower CAC?

    Improve conversion rate, raise AOV, expand LTV via retention. Ad-side optimisation lowers CPA but rarely moves fully-loaded CAC by more than 15%.

    Related terms

    CPA (Cost per Acquisition)

    Ad spend divided by conversions, the price of one action.

    LTV (Customer Lifetime Value)

    Total gross profit a customer generates across their relationship.

    LTV:CAC Ratio

    Lifetime value ÷ acquisition cost, the unit-economics gate for scaling.

    ROAS (Return on Ad Spend)

    Revenue attributed to ads ÷ ad spend, the fastest efficiency read.

    MER (Marketing Efficiency Ratio)

    Total revenue ÷ total ad spend, the blended, attribution-free ROAS.

    CPL (Cost per Lead)

    Spend divided by leads captured, a top-of-funnel efficiency metric.

    ROI (Return on Investment)

    Net profit from an investment as a % of the amount invested.

    tCPA (Target CPA)

    Google auto-bid strategy that targets a specific cost per conversion.

    Browse the full glossary