What a Google Analytics consultant should fix first in a B2B GA4 property: key events, consent, tags, CRM links, what an audit covers and how long it runs.
The monthly report says the website produced eleven leads in September. The CRM says forty. Somewhere between the contact form and GA4, three quarters of the enquiries the business paid for have dropped out of the numbers, with the budget meeting next week.
That gap is the most common reason people start looking for a Google Analytics consultant, and it is nearly always fixable. The cause is rarely one big failure. Usually it is three or four small settings, each sensible on its own, that together leave GA4 counting the wrong events or not counting the right ones at all.
This piece covers what we find most often in GA4 properties for B2B and lead generation businesses, what a GA4 audit should look at, what a consultant should hand over at the end, how long the work takes, and when server side tracking earns its cost. It is the work our tracking and measurement service does week in, week out.
What to fix first
- The GA4 issues we find in B2B properties come from a short list: unmarked key events, duplicate tags, consent mode, cross-domain forms and the two-month data retention default, and all of them can be checked in a day or two.
- A useful consultant hands over a measurement plan, a documented Tag Manager container, marked key events, Google Ads import and a CRM link, so the numbers keep working after the project ends.
- Clear Click runs GA4 and Tag Manager fixes as a fixed-scope project, then connects the result to the ad accounts and the CRM so spend decisions rest on real, qualified leads.
What does a GA4 consultant usually find first?
We open every property with the same question: if a buyer filled in the form this morning, where would that show up, and would the sales team believe it? Working backwards from the answer surfaces the problems below. Eight of them come up again and again.
Key events that were never marked. GA4 often records the form submission perfectly well, as an event, but nothing counts it as a lead until someone marks it as a key event in the admin settings. Key events are what GA4 used to call conversions, and Google Ads still uses the word conversion for the same idea once they are imported. In plain English: the enquiries are being recorded, and the reports still show zero. Phone calls go missing the same way, because a tap on a phone number is just another event until it is marked.
Duplicate tags. A GA4 tag hard-coded into the site template, then added again through Google Tag Manager, or a website plugin quietly sending its own copy. Every page view counts twice and every rate in the report is wrong. The fix is one route in, and that route is usually Tag Manager.
Consent mode set up halfway. UK and European visitors need a consent banner, and Google's Consent Mode needs to be told what each visitor agreed to, including the newer signals for ad data and ad personalisation. We often find tags firing before the banner has an answer, or a banner that never passes its answer on. One way carries compliance risk; the other leaves big holes in the data that GA4 cannot model around.
Forms, bookings and payments on another domain. A meeting scheduler, an embedded CRM form, a payment page or a booking engine on a separate domain will break the session unless cross-domain measurement and the unwanted referrals list are set up. The symptom is a lead that GA4 credits to the payment provider or the scheduling tool rather than to the campaign that brought the visitor in.
Data retention left at two months. New properties keep event-level data for two months by default, which limits how far back the explorations can look. A standard property can be switched to 14 months in a couple of clicks. The change only applies from that day forward, which is why it is worth doing before anything else.
Internal traffic in the numbers. Your own team, your developers and your agency all visit the site, and on a B2B site with modest traffic that can be a real share of sessions and test form fills. GA4 lets you define internal traffic and filter it out, but the filter sits in a testing state until someone switches it on.
UTM chaos. LinkedIn, linkedin, li and Social all describing the same campaign, newsletters with no tags at all, and a large unassigned channel that is hard to account for. A one-page naming convention, agreed with whoever sends emails and builds campaigns, fixes most of it going forward.
Numbers that do not match the ad platforms or the CRM. Some gap is normal. Each platform counts on its own attribution rules and windows, and consent choices and blockers take a further slice. We cover why in why GA4 and your ad platforms disagree. The goal is a gap you can explain in one sentence, rather than a perfect match.
None of these is a rebuild. Most are settings, and several take minutes once someone knows where to look.
What does a GA4 audit actually cover?
A useful GA4 audit reads the whole chain, from the ad click through to the record in the CRM. Looking only at the GA4 admin screens misses half of it, because so much of the measurement now lives in Tag Manager, the consent platform and the CRM. That is also why searches for a Google Tag Manager consultant and a GA4 consultant tend to end up in the same place.
Our audits look at six areas:
- Property and data stream settings: retention, filters, cross-domain, referral exclusions
- The Tag Manager container: every tag, trigger and variable, duplicates, and what fires before consent
- Consent: banner behaviour, default states and the signals passed to Google
- Key events: what is marked, what should be, and any values attached
- Links: Google Ads, Search Console, BigQuery export, and how leads reach the CRM
- Acquisition data: UTM conventions, channel groupings and unassigned traffic
The output is a written list of findings, ranked by commercial effect rather than technical neatness. Each finding comes with the fix and who should do it. In plain English: what is costing you money, in order.
What should a GA4 consultant hand over at the end?
An audit tells you what is wrong. The project that follows should leave you with six things you can keep using without us.
A measurement plan
A short document that lists your business goals, the actions on the site that signal progress towards them, and the exact event and key event names that record each one. It is the piece most often missing when we inherit a property.
A clean, documented Tag Manager container
One container, tags named consistently, triggers that say what they do, and a change log. If your developer or a future agency opens it in a year, they should understand it in an afternoon.
Key events, Google Ads import and the CRM link
The right key events marked in GA4, imported into Google Ads, with enhanced conversions for leads where it fits. Then the step that changes the commercial picture: passing lead quality back from the CRM, so Google Ads can learn from qualified leads and closed deals rather than every form fill.
Take a worked example. A firm spends £6,000 a month on Google Ads at £60 per form fill, so around 100 leads. If one in four is a real prospect, the cost per qualified lead is £240, and that is the number the bidding should chase. Without the CRM link, the account optimises for the other 75 as well. We go into how the credit then gets shared across channels in our marketing attribution guide.
A report people will open
A Looker Studio report built on the measurement plan, showing leads, qualified leads and cost per qualified lead by channel. One page sales, finance and marketing all read the same way.
For Hubject, a global EV eRoaming platform running B2B campaigns across several markets, we introduced a consistent reporting model so every market was measured the same way, then built budget forecasting from their historical data. With comparable numbers in front of them, the team could move budget with confidence.
£40k saved: What improved budget modelling and allocation saved Hubject once every market was reported on one consistent model.
Source: Clear Click, Hubject case study.
How long does the work take, and what does it cost?
For a typical B2B lead generation site with one domain, a handful of forms and a CRM, the audit takes about a week once we have access. Fixes usually run two to four weeks, depending on how many domains, markets and third-party tools are involved and how quickly a developer can make site changes. After that, give the data a few weeks to settle before reading anything into trends.
We price GA4 work as a fixed project, scoped after a short call, because the effort depends on the container, the number of domains and markets, and how the CRM is set up. You know the total before we start. Whether you hire a GA4 agency or a consultant, ask for a fixed scope with named deliverables.
If you later want the ad accounts run on top of that data, paid media management starts from £1,500 a month plus VAT, but the GA4 project stands on its own. Some teams take the measurement work in-house after the handover, and that can work well; we compare the options in marketing analytics agency or in-house analyst.
Whichever route you choose, agree who owns the property once the project ends. A new form plugin, a landing page builder or a CRM migration can quietly break a key event, and a ten-minute monthly check catches it before a quarter of data is lost.
Once the numbers are clean, one dashboard that sales and finance both trust is usually the next sensible step. See our reporting dashboards work
When is server side tracking worth it?
Server side tracking moves the work of sending data to Google, Meta and LinkedIn from the visitor's browser to a server container you control, often server-side Tag Manager running on Google Cloud. In plain English, the website sends one stream of data to your own subdomain, and you decide what goes on to each platform and in what form.
The benefits are real: more control over what third parties receive, a lighter load on the page, and some of the signal that browsers now restrict can be recovered. It does not get around consent. A visitor who declines is still a visitor who declined, and the server has to respect that.
Where we would be candid is on timing. For a B2B site producing 30 or 40 leads a month, server side tracking will not fix a property with unmarked key events or duplicate tags, and the hosting and upkeep are an ongoing cost. We would put that budget into the basics and the CRM link first. It starts to earn its keep when spend is spread across several ad platforms, when each lead is worth a lot to the bidding, or when there are clear privacy requirements about what leaves your systems.
Questions we get asked
What does a Google Analytics consultant actually do?
They make sure GA4 counts the things your business cares about, accurately, and that the data reaches the places decisions are made, such as Google Ads and the CRM. In practice that means an audit, fixes in GA4 and Tag Manager, and a measurement plan you keep.
How much does a GA4 audit cost in the UK?
It depends on the size of the setup: one domain with three forms is a very different job from five markets, a booking engine and a CRM integration. We quote a fixed fee after a short scoping call, so you know the total before any work starts.
Do we need a GA4 agency or a Google Tag Manager consultant?
For most B2B sites, the same person or team should do both, because most GA4 fixes are made in Tag Manager. What matters more is that they also understand the CRM and the ad accounts, since that is where the numbers get used.
Why doesn't GA4 match the CRM or Google Ads?
Each system counts differently: different attribution rules, different time windows, and consent choices that hide some visitors from analytics. A gap of some size is normal. A gap you cannot explain usually points to unmarked key events, broken cross-domain tracking or duplicate tags.
Is server side tracking worth it for a small B2B business?
Usually not as a first step. If key events, consent and the CRM link are not right yet, those will do far more for the numbers. Server side tracking makes sense later, when spend across several platforms is high enough that small gains in signal pay for the upkeep.
Can GA4 be fixed without starting again?
Almost always. Existing properties tend to be largely sound, and the problems sit in a few settings and tags. Keeping the property also keeps its history.
Where we fit
Clear Click sets up and repairs GA4, Tag Manager and CRM measurement for B2B and lead generation businesses, usually alongside the paid media accounts that depend on it. Our work with Hubject brought every market onto one reporting model and saved £40k through better budget modelling and allocation.
If your lead numbers do not line up and you would like a second pair of eyes, have a look at our tracking and measurement work or get in touch and tell us what you are seeing. We will tell you what we would check first.
