MarginKoala

What does a new customer cost me?

Enter your numbers below. Get the answer first, then Koala's next move.

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Start with two numbers you probably already know: what you spent getting customers and how many new customers you got from that period.

Finance term: CAC — Customer Acquisition Cost. Koala calculates it for you.

$

Use the total spend for the same period as the new-customer count below.

Count genuinely new customers from the same period.

Want the more complete cost?

Add creative, agency and software costs if they belong to the same customer push.

Koala's Calculated Result
What it cost you to win each new customer.
MarginKoalaKoala's Professional Opinion

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Frequently asked questions

What is CAC?

CAC = acquisition costs included in the chosen scope ÷ new customers acquired on the same scope and period. Label the scope — for example ad-only, channel or blended — so comparisons remain consistent.

CAC

Should I include only ad spend, or all marketing cost?

Both are valid reads, but pick one: "blended CAC" includes ad spend + creative + agency + tools divided by new customers; "ad-only CAC" only ad spend. The blended view is sharper for unit-economics comparisons, the ad-only view is sharper for channel ranking.

CAC

Why pay attention to CAC at all?

Because the per-customer profit behind LTV:CAC decides whether acquisition is worth pursuing. A low CAC can hide a high payback period and vice versa; a CAC by itself is only one input into the LTV:CAC ratio.

CAC

How often should CAC be re-measured?

Re-measure CAC when the spend, channel mix, attribution scope or customer counts change enough to affect the decision. The appropriate cadence depends on data volume and volatility; MarginKoala does not impose a universal weekly or monthly schedule.

CAC

Educational use, not financial advice. Numbers are estimates for planning; consult a qualified professional before acting on them.