GA4 & GTM AUDIT
Find the gaps in your GA4 and Google Tag Manager setup.
A measurement audit should explain what you can trust, what needs attention and which fixes matter first. I review your tracking against the real customer journey—not just whether tags fire.
Work directly with Iyke Abel · Remote support for UK, EU and US clients
When an audit is the right next step
You may already have GA4, GTM and advertising tags installed, but still be unable to explain a discrepancy. A form redesign, a new checkout, inherited account settings or a change in consent handling can leave the implementation out of step with the business.
- Leads appear in advertising reports but do not reconcile with successful enquiries.
- Events are missing, duplicated or triggered before the intended action succeeds.
- A hosted checkout or embedded form makes the journey difficult to follow.
- Your team needs a reliable starting point before increasing spend or rebuilding reports.
The audit begins by agreeing which decisions the data must support. A small discrepancy between platforms is not automatically a fault: collection, attribution and reporting definitions also need to be understood.
What the review covers
Journey and event definitions
Map the important interactions, how success is defined, and where the website hands off to another platform. Review event names, parameters and the context needed for reporting.
Configuration and delivery
Review GA4 and GTM configuration, trigger behaviour, conversion coverage and relevant advertising connections. Test whether the expected request is sent and the destination receives useful data.
Quality and reporting
Investigate duplicates, internal testing, attribution gaps and differences between source systems. Review consent-dependent behaviour with the implementation team; legal interpretation remains outside the audit.
A practical findings document, not just a score
For the agreed scope, the handover sets out each finding, the affected journey, how it was reproduced, its business impact and a recommended next step. Confirmed faults are separated from configuration choices and items that need more evidence.
- A map of the reviewed journeys and measurement definitions.
- Prioritised findings with supporting observations.
- An implementation plan with dependencies and ownership.
- A validation checklist for confirming the fixes.
The output is designed to help your team act. Implementation can be scoped separately through the conversion tracking and attribution service; it is not assumed to be included in every audit.
How the audit works
- Agree the questions. Identify the business outcomes, systems, journeys and reporting concerns to review.
- Arrange appropriate access. Review access to GA4, GTM and relevant advertising or reporting systems is agreed. Website/developer support may be needed to reproduce some behaviours.
- Test and reconcile. Follow representative journeys, including failure paths where practical, and compare observations with the intended definitions.
- Review the findings. Discuss priorities, remaining uncertainties, dependencies and the proposed implementation sequence.
Timing depends on the number of properties, journeys, integrations and the access available. You receive an agreed scope before work begins; no universal turnaround or guaranteed data-recovery claim is made.
Relevant measurement work
Pink Balloon shows why validation must continue beyond a fired tag, particularly across a custom storefront and hosted checkout. RMBI Care Co. shows how business questions can become a measurement plan and useful reporting.
For agency teams reviewing multiple client accounts, see agency measurement support.
Questions before we start
Do we need a complete rebuild?
Not necessarily. The review may identify a focused fix, a change to definitions or a gap in reporting. A rebuild is only proposed when the evidence and scope justify it.
Can the audit recover missing historical data?
Data that was never collected cannot simply be recreated in GA4. Other source systems may help answer a historical question, but availability and limitations must be assessed separately.
What if our developer manages GTM?
The findings can be handed to your existing team. Responsibilities for changes, testing and publishing should be explicit so parallel work does not overwrite another implementation.
Let’s look at your measurement setup.
Share the platforms you use, the journey you need to measure and the question your current reporting cannot answer.
Prefer to talk? Schedule a call with Iyke.