GA4 Audit Services: Find Out What Your Analytics Is Actually Measuring
Most GA4 accounts are not broken in a way that throws an error. They are broken in a way that quietly under- or over-counts, and nobody notices until a number gets questioned in a meeting.
Why a Working GA4 Property Can Still Be Wrong
GA4 will report a number for almost any configuration you give it, including a broken one. It does not tell you when internal traffic is inflating your session count, when a conversion event fires twice per checkout, or when consent mode is quietly dropping a third of your EU sessions from measurement. The dashboard looks the same whether the setup is correct or not.
An audit exists to close that gap: a structured review of the property against what it is supposed to measure, checked wherever possible against a second, independent source of the same number.
The most common trigger for an audit request is not "we think something is wrong" - it's "our GA4 number and our Google Tag Manager setup were built at different times by different people, and nobody has looked at the whole picture since." That gap is exactly where audits find the most.
What We Check in a GA4 Audit
| Area | What we check | Why it matters |
|---|---|---|
| Property & stream setup | Data stream count, cross-domain measurement, unwanted referral / internal traffic filters | Duplicate properties and unfiltered internal traffic are the two most common causes of inflated numbers |
| Event & parameter naming | Naming consistency, reserved-name collisions, custom dimension registration limits | Inconsistent naming silently fragments a metric across multiple event names |
| Key events (conversions) | Which events are marked as key events, and whether they fire once per real action | Double-firing conversion tags is the single most common cause of GA4-vs-platform mismatches |
| Consent & privacy configuration | Consent Mode implementation, IP handling, data retention window | Consent gaps change measured volume in ways that look like a traffic drop but are not one |
| Attribution & channel grouping | Default channel grouping accuracy, UTM discipline, cross-domain linking | Misconfigured channel grouping misattributes spend across marketing channels |
| Data quality checks | Bot filtering, sampling/thresholding exposure, DebugView spot checks | Confirms the numbers being reported are the numbers actually being measured |
Where the property connects to Google Ads, Shopify, or a CRM, we also compare GA4's reported numbers against that platform's own reporting for the same date range and event, since a single-source review cannot tell you whether GA4 is right or the other platform is.
What You Get
A written findings report ordered by impact: what is currently wrong, what it is doing to your numbers, and what fixing it involves. Findings are split into three tiers:
- Data-integrity issues - duplicate counting, missing key events, unfiltered traffic. Fix these first; everything downstream depends on them.
- Configuration gaps - consent mode, cross-domain linking, channel grouping. These change what a number means, not whether it is technically firing.
- Governance recommendations - naming conventions and change-control practices so the next person who touches the account does not reintroduce the same problems.
Hypothesis, not a guarantee: we cannot state in advance how much a given account's numbers will move once issues are fixed - that depends entirely on what the audit finds in your specific setup. Any "expect X% more accurate reporting" claim without having looked at your property would be a fabricated statistic, and we do not make those.
Frequently Asked Questions
What does a GA4 audit actually check?
A GA4 audit reviews property and data stream configuration, event and parameter naming, conversion (key event) setup, consent mode and IP handling, internal traffic and referral exclusion filters, cross-domain measurement, and whether reported numbers match a second source such as server logs or the platform being measured (ads, ecommerce, CRM).
How long does a GA4 audit take?
Scope drives timeline more than company size. A single-property, single-domain GA4 setup can usually be reviewed in a few business days. Multi-domain, multi-brand, or ecommerce properties with custom event schemas take longer because more configuration and more historical data need to be checked against source systems.
Why do GA4 numbers not match Google Ads or Shopify?
Discrepancies usually come from a small set of causes: different attribution windows and models, consent-gated tracking dropping a share of sessions, duplicate or missing conversion events, bot traffic filtering differences, or timezone and session-definition mismatches between platforms. An audit isolates which of these is driving the gap in your specific setup rather than assuming a single cause.
Do you fix the issues an audit finds, or just report them?
Both are offered. The audit itself is a findings report with a prioritized fix list, which some teams implement with their own developers. We also do the implementation work directly when asked, scoped separately from the audit engagement.
Get a Second Set of Eyes on Your GA4 Setup
Send us access (or a read-only export) and we'll tell you what the audit would cover before you commit to it.
Request a GA4 AuditRequest a GA4 Audit
Tell us what's connected to the property (ads, ecommerce platform, CRM) and what looks off. We'll scope the review from there.