Adviser Tracking Stack

Meta CAPI vs Google OCI for Offline Conversion Tracking

Both are essential - Meta CAPI for Meta ads, Google OCI (Offline Conversion Import) for Google Ads. Implement both; they are not alternatives.

Quick answer

Meta Conversions API vs Google Offline Conversion Import: the verdict

These are complementary, not alternatives. Deploy Meta CAPI for server-side event forwarding to Meta, and Google OCI for offline stage events (fee-signed, AUM-onboarded) back to Google Ads. Together they typically lift reported conversions 25-50% and cut CPL 15-35% inside 60 days.

Criterion
Meta Conversions API
Google Offline Conversion Import
Platform
Meta (Facebook/Instagram)
Google Ads
Primary use
Server-side event forwarding
Offline stage event upload
Real-time
Yes
Batch (hourly+)
Setup complexity
Moderate
Moderate
Common stack
Server-side GTM + Stape
CRM + Zapier / API
Required
For Meta ads
For Google ads

Deploy both

Meta CAPI for server-side forwarding of Lead, Schedule, Purchase events with hashed user data and fbp/fbc.

Google OCI for CRM-stage events (consult booked, fee signed, AUM onboarded) imported with gclid and revenue value.

Impact

- 25-50% lift in reported conversions - 15-35% CPL reduction inside 60 days - 2-4x improvement in ad platform optimisation quality

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