Google Tag Manager Audit Services for Accurate Marketing Data

Missing conversions, duplicate events and unexpected tag behaviour can make reports difficult to interpret. Our Google Tag Manager audit reviews tags, triggers, variables and the available tracking evidence.

Choose the £499 Read-Only Audit for existing configuration and reports, or the £1,499 End-to-End Audit for agreed practical tests. Both provide findings and priorities; container changes, publishing and implementation fixes are separate.

A tidy container isn't the same as accurate tracking

A misconfigured container can cause missing events, duplicate conversions or incorrect values. A tidy container alone does not show that the destination received and processed the intended data.

We document what the configuration shows, what practical testing confirms where included, and which areas remain unverified.

Why Your Google Tag Manager Setup Needs an Audit

GTM Container Review

We analyze your tags, triggers, variables, naming structures, and overall container organization to identify improvements.

Tracking & Conversion Validation

The End-to-End Audit tests important user actions such as form submissions, purchases, enquiries and clicks to confirm they’re tracked correctly. The Read-Only Audit reviews whether these are configured to fire, without live testing.

Data Layer Analysis

We inspect the available data-layer implementation and documentation. With the End-to-End Audit, we also observe the agreed test journeys and trace the relevant values to accessible destinations.

Tag & Trigger Troubleshooting

We identify broken, duplicated, or unnecessary tags and recommend solutions to improve tracking performance.

Analytics Integration Review

We assess your connection between GTM, GA4, advertising platforms, and other marketing tools to improve measurement accuracy.

Illustrative example: a tag fires on any form submission

A configuration review can identify that a trigger is broad and may capture unintended forms. Practical testing is needed to establish which forms it actually captures, whether unsuccessful attempts are included and how the destination records those events.

The finding should separate the configuration concern from the behaviour demonstrated in a test. (This is an illustrative example, not a client result.)

Turn Your Tracking Data Into Better Business Decisions

You receive a record of findings, supporting evidence, priorities and implementation guidance. We explain how each confirmed issue can affect reporting and identify any access or testing limitations.

Our Audit Process

Step 1

Discovery & Goal Review

We understand your website, business objectives and current tracking requirements.

Step 2

Technical Audit

We review your GTM container, tracking setup, events and integrations.

Step 3

Issue Identification

We highlight errors, risks and opportunities with clear recommendations.

Step 4

Action Plan

We provide practical steps to improve your tracking accuracy and measurement strategy.

Why Choose Attribution Metrics?

The audit separates configuration findings from observed test results. It does not certify that every tag or customer journey works, and it does not include container clean-up or publishing changes.

If repairs or ongoing management are appropriate, we agree those separately. An audit is not a compulsory purchase before every setup project.

Get In Touch

Tell us which container, platforms and reporting questions are involved. We can help you choose a configuration review or practical testing.

Email: hello@attributionmetrics.com

Why it matters

Frequently asked questions

Will you publish changes during the audit?

No. Auditing does not authorise edits or publication. Any cleanup, repair or rebuild is separately agreed.

Do I also need a GA4 audit?

Relevant GA4 configuration is already considered within the agreed audit scope. You do not need to buy a second review simply because GTM sends data to GA4.

Can you review tracking installed outside GTM?

Where it is part of the agreed setup and accessible, we consider it as a potential source of overlap or missing coverage. GTM is not assumed to contain every tracking implementation on the website.

Is an unused-looking tag automatically a problem?

We recommend reviewing your setup after major website updates, tracking changes, new campaigns or when reporting accuracy becomes a concern.

Can you help fix tracking issues after the audit?

Yes, through a separately agreed implementation. We define what to retain, repair or remove and how changes will be tested before publication.

Attribution Metrics

GA4 audits, tracking setup and marketing attribution analysis — built for businesses that need clarity, not just another dashboard.