Key takeaways
- Check a few essential settings first: data retention, internal traffic filters, Search Console linking and consent.
- Track the actions that matter, such as form submissions, calls, bookings and purchases, and mark them as key events.
- Most small businesses only need a handful of reports: traffic acquisition, landing pages, key events and Search Console.
- Use UTM tags on campaign links so you can see which emails, ads and posts bring results.
For most small businesses, getting value from Google Analytics 4 comes down to three things: setting it up correctly, tracking the few actions that matter to your business as key events, and checking a handful of reports regularly. You do not need to understand every feature. You need to know where visitors come from, which pages they land on and how many of them enquire, book or buy.
GA4 can feel confusing, especially if you were used to the old Universal Analytics, which stopped processing data in July 2023. This guide covers the essential set-up, how to track enquiries and sales, and the reports worth checking each month.
How GA4 works in plain English
GA4 records everything as an event: a page view, a scroll, a click on an outbound link, a form submission, a purchase. Some events are collected automatically; others you set up yourself. You then mark the events that matter most to your business as key events, which Google called conversions until 2024. Reports show how many users, sessions, events and key events came from each channel, campaign and page.
Essential set-up checklist
1. Install the tag correctly
Add GA4 through Google Tag Manager, your website platform’s built-in integration or a reputable plugin, and make sure it is installed once. Duplicate tags double-count visits, which is a common problem when a theme and a plugin both add analytics.
2. Turn on enhanced measurement
In your web data stream settings, enhanced measurement automatically tracks useful events such as scrolls, outbound clicks, site search, video engagement and file downloads. Review which ones are switched on and turn off any that create misleading data.
3. Extend data retention
By default, GA4 keeps detailed event data for only two months, which limits the explorations you can run. In Admin, under data retention, change it to the longest period available on the standard version, 14 months.
4. Filter out internal traffic
Your own visits to the website, and those of your team and agency, skew the figures. Define internal traffic by IP address and activate the internal traffic filter.
5. Link Google Search Console
Linking Search Console brings organic search queries and landing page data into GA4, so you can see which searches lead to visits.
6. Link Google Ads
If you run Google Ads, link the accounts so you can see ad performance alongside other channels and import key events for bidding.
7. Set up consent properly
Under UK rules, analytics cookies generally need visitors’ consent. Use a consent banner that integrates with Google’s Consent Mode, so Google tags adjust to each visitor’s choice. Google has required Consent Mode for advertising features for users in the UK and EEA since 2024.
8. Check the basics
Set the right reporting time zone and currency, add team members with appropriate access levels, and make sure your business owns the GA4 property rather than an agency or former employee.
Track the actions that matter
This is the most important step, and the one most often missed. Decide which actions show a visitor became a lead or customer, then make sure each one is tracked and marked as a key event. Typical examples:
| Business type | Key events to track |
|---|---|
| Local service business | Contact form submissions, quote requests, phone number clicks, email clicks, booking requests |
| Online shop | Purchases with revenue, plus add-to-basket and checkout started as supporting events |
| Appointment-based business | Completed online bookings, booking button clicks, calls |
| B2B or professional services | Enquiry forms, consultation bookings, brochure or guide downloads |
Tracking form submissions reliably
GA4’s automatic form tracking can miss submissions or count failed ones. A more reliable approach is to send visitors to a thank-you page after a successful submission and track that page view, or to fire an event when your form plugin confirms a successful submission, usually through Google Tag Manager. Test by submitting the form yourself and checking the event appears in GA4’s real-time or DebugView reports.
Tracking calls
Clicks on phone numbers can be tracked as events, which captures mobile visitors who tap to call. For a fuller picture, call tracking services can attribute calls to channels and campaigns. At the very least, ask new customers how they found you.
Ecommerce tracking
Most ecommerce platforms, including Shopify and WooCommerce, offer GA4 integrations that send purchase events with revenue. Check that the revenue figures in GA4 roughly match your shop’s sales reports; differences of a few per cent are normal because of consent choices and ad blockers.
Use UTM tags on campaign links
GA4 can only report on campaigns it can identify. Add UTM parameters to links in emails, social posts, paid social ads, QR codes and partner websites, so visits are attributed to the right source, medium and campaign. Use Google’s free Campaign URL Builder and a consistent naming convention, such as always using lower case. Google Ads clicks are tracked automatically when the accounts are linked.
The reports that matter
Traffic acquisition
Found under Reports, then Acquisition. It shows sessions, engagement and key events by channel, such as organic search, paid search, direct, referral, email and social. Use it to see which channels bring visitors who take action, not just visitors.
Landing pages
The landing page report, under Engagement, shows which pages people arrive on and how many key events follow. It is one of the most useful reports for SEO, because it shows which pages bring valuable organic visitors and which bring traffic that never converts.
Key events
Shows how many of each key event occurred and lets you break them down by channel, campaign or page. Check it monthly against your enquiry and sales records.
Search Console reports
Once linked, these show organic queries, impressions, clicks and landing pages, combining Search Console data with GA4 engagement data.
Pages and screens
Shows which pages get the most views and engagement. Useful for spotting popular content and pages that need better calls to action.
Real-time and DebugView
Useful for testing that tracking works when you set up new events, not for day-to-day reporting.
Understanding engagement metrics
GA4 counts a session as engaged if it lasts more than ten seconds, includes a key event or includes at least two page views. Engagement rate is the share of sessions that were engaged; bounce rate is the opposite. Engagement is more useful than bounce rate alone, but neither tells you whether marketing is working. Key events and revenue do.
Audiences and remarketing
GA4 can build audiences from behaviour, such as people who viewed a service page but did not enquire, or customers who bought in the last 90 days. If you link Google Ads, these audiences can be used for remarketing or excluded from campaigns, so you do not pay to advertise to existing customers. Audiences only start collecting people from the moment you create them, so set up any you might need early, and make sure your consent set-up allows advertising features before using them.
Build a simple monthly view
Rather than exploring GA4 from scratch every month, create a simple view of the figures you care about. Options include customising GA4’s report library, using a saved exploration, or building a Looker Studio dashboard that combines GA4, Search Console and Google Ads data. Keep it focused: visitors by channel, key events by channel, top landing pages and month-on-month and year-on-year comparisons.
Five questions GA4 can answer every month
- How many enquiries or sales did the website bring, and is that rising? Check key events over time, compared with the same month last year.
- Which channels bring customers, not just visitors? Compare key events by channel in the traffic acquisition report. A channel with fewer visits but more enquiries deserves more attention.
- Which pages bring valuable visitors? The landing page report shows which service pages, products and guides lead to key events.
- Did our latest campaign work? Filter by UTM campaign to see visits and key events from a particular email, ad or post.
- Is mobile performing as well as desktop? Compare key event rates by device. A large gap usually points to usability or speed problems on mobile.
If you can answer these five questions each month, you are using GA4 better than most small businesses.
Why GA4 numbers never match exactly
GA4 figures rarely match your sales system or ad platforms precisely. Visitors who decline cookies, use ad blockers or switch devices are not always tracked, and different platforms count things differently. That is normal. Look for trends and large discrepancies rather than exact matches, and use your own records, such as your CRM, booking system or shop, as the source of truth for revenue.
Common GA4 mistakes
- No key events set up, so GA4 shows visits but not results.
- Tracking form interactions rather than successful submissions.
- Duplicate tags double-counting traffic.
- Data retention left at two months.
- Internal traffic included in reports.
- Campaign links without UTM tags, so email and social traffic shows as direct or referral.
- The property owned by an agency or former staff member.
- No consent banner, or one that does not integrate with Consent Mode.
Getting help
Set aside an hour to work through the checklist above, then test each key event. Once tracking is right, a monthly check of the four core reports will tell you most of what you need to know. If you would like it done for you, our marketing analytics and reporting service covers GA4 set-up, event tracking, consent, dashboards and monthly reporting. Our guide to measuring marketing ROI shows how to turn the data into decisions.
How Eigme can help
Turn this into results.
We can help you put this into practice with a clear plan, hands-on delivery and reporting in plain English.
Book a free strategy call →Frequently asked questions
What is GA4?
GA4, or Google Analytics 4, is Google’s current analytics platform. It replaced Universal Analytics, which stopped processing data in July 2023. GA4 measures everything as events, such as page views, clicks, form submissions and purchases, and lets you mark the most important ones as key events.
What are key events in GA4?
Key events are the actions you mark as most important to your business, such as enquiries, bookings, calls or purchases. Google renamed what were previously called conversions in GA4 to key events in 2024. Marking them lets you see which channels and pages drive results.
How do I track form submissions in GA4?
The most reliable method is to fire an event when a form is successfully submitted, for example when a thank-you page loads or when your form plugin confirms submission, usually set up through Google Tag Manager. GA4’s automatic form interaction tracking can be unreliable, so test whatever method you use.
Do I need cookie consent for Google Analytics in the UK?
Generally, yes. Analytics cookies are not considered strictly necessary, so UK rules usually require consent before setting them. Use a consent banner and Google’s Consent Mode, which adjusts how Google tags behave based on the visitor’s choice. Take advice if you are unsure about your set-up.
Which GA4 reports should a small business check?
Start with the traffic acquisition report to see where visitors come from, the landing page report to see which pages bring visitors and key events, the key events report to see enquiries and sales, and the Search Console reports for organic search queries. Check them monthly.
