# Cost Per Click Zero Denominator Review

Separate missing or zero clicks from valid cost-per-click calculations.

## Scope
Preparation and review only. No account action or professional decision.

## Inputs
Cost/click export, dates, currency, full campaign grain and denominator policy.

## Workflow
1. Match cost and clicks at the same scope and date.
2. Calculate CPC only with verified positive clicks and comparable currency.
3. Flag missing, zero or negative denominators separately from genuinely zero cost.
4. Return a report exception note; do not fill gaps or rank campaigns on invalid ratios.

## Output contract
key | cost | clicks | currency/scope | CPC or held | denominator reason

## Fictional acceptance test
Fictional cost 30 and clicks 10 gives CPC 3. Cost 30 and clicks 0 is held, not CPC 0; cost 0 and clicks 10 gives 0.

## Review gates
Keep original values, source IDs and version dates. Unknown facts stay held. Use qualified review for hiring, legal and accounting conclusions. No send, share, sign-in, scheduling, ledger change or payment. Fictional contract review is not a live account compatibility test.

## Method source
https://support.google.com/analytics/answer/10071305?hl=en

Checked October 7, 2026. Oct7 GSC chart throughOct4: marketing copilot37,PlanableClaude33/ChatGPT23,brief12,report11; other profession topics are related workflow-method demand leads, not exact queries. Exact monthly volume unmeasured.