Definitions Note
[Company] — one quarter of spend, seven defensible answers
There is no accounting standard behind customer acquisition cost and no convention narrow enough to settle an argument. Sign the line before anyone computes anything.
| Definition | Numerator | Denominator | CAC |
|---|---|---|---|
| Incremental cost of obtaining a contract | New-business commission | New logos | — |
| Spend intensity against the base | Sales and marketing | Active customers | — |
| What the marketing dashboard reports | Paid media | New logos | — |
| Counting an upsell as a win | Agreed acquisition | Logos plus expansions | — |
| The agreed line | Agreed acquisition | New logos | — |
| Income statement line, undivided | Sales and marketing | New logos | — |
| Everything it took to land them | Fully loaded | New logos | — |
What the note has to settle
| Renewal commissions | In or out. Out charges retention to retention |
| Brand and content | Split by who reads it, or excluded entirely |
| Onboarding and trial cost | Out, if they already sit inside gross margin |
| Lifetime value window | A stated month count, never a perpetuity |
| Cohort rule | Quarter of first paid subscription, never re-based |
Fill it from your own ledger, or open the pack and let the agent classify every spend line and show you the spread before you pick.