Estimate Suspected Advertising Waste Without Calling It Confirmed Loss

A suspected-waste estimate helps prioritize investigation. It is not an invoice reconciliation, proof of fraud, or a guarantee of money recoverable from an advertising platform.

Define the input before calculating

Identify what you counted: billed ad clicks, landing requests or tracked button interactions. Remove duplicate instrumentation. Select a campaign, date range and currency. A single click can produce several on-site events, so multiplying every flagged button interaction by an ad CPC can substantially overstate costs.

A transparent illustrative calculation

Suppose an investigation identifies 40 suspect ad-click records and uses an assumed average CPC of $0.50. The simple prioritization estimate is 40 × $0.50 = $20. These figures are invented for explanation. If you only have 40 flagged on-site interactions rather than matched ad-click records, even this interpretation needs a clear limitation.

Separate the estimate into confirmed invalid activity, ambiguous flags and accepted legitimate outcomes where the evidence permits. Do not describe ambiguous observations as confirmed charges.

Reconcile with the advertising platform

Review actual spend, invalid-traffic filtering and later adjustments for the same period. Google's invalid-click process can remove activity from billing or apply later credits. A third-party risk threshold cannot determine that an interaction escaped those protections. Use a campaign-specific CPC when available and show where an assumed default was used.

Evaluate an intervention

Before adding restrictions, record accepted leads, error rates and valid conversions. Afterward, compare similar traffic segments and account for targeting, seasonality and measurement changes. A reduction in flagged interactions is not automatically an equal amount saved. Server-side denial can happen after an ad click and therefore may not prevent the original charge.

SearchBastion's cost estimate is a heuristic based on its observed events and configured CPC. Treat the associated blocklist as a reviewable proposal, not proof against every listed address or an automatic refund request.

For platform billing treatment, consult Google Ads' invalid-click definition.