Connect every lead to a gclid/fbclid at capture, track it through CRM to client-won, feed that back to the ad platform as an offline conversion, and report in cost-per-client and revenue-multiple. Form-fill CPL alone is a vanity metric.
The right metric ladder 1. Cost per click (CPC) — diagnostic only. 2. Cost per lead (CPL) — surface-level. 3. Cost per qualified lead (CPQL) — better. 4. Cost per booked meeting — strong. 5. Cost per client won — the gold standard. 6. Revenue multiple on ad spend — what the board cares about.
How to instrument it - Capture gclid and fbclid on every form. - Pass into CRM as custom fields. - Push CRM stage changes back as offline conversions. - Rebuild ad-platform reports on "client won" as conversion action. - Layer in GA4 and server-side tracking for attribution.
Typical targets - Cost per client: 3 to 8% of first-year revenue. - Revenue multiple: 5x to 15x within 24 months.