Google Analytics 4 for business owners: what to set up and what to read

What GA4 is for

Google Analytics 4 (GA4) records what visitors do on your website: where they came from, which pages they viewed and which actions they took. For a business owner, its most important job is to show which sources bring enquiries, so you can spend time and money on what works.

It answers the questions in our guide to marketing metrics that matter, but only if you tell it what counts as a valuable action.

Step 1: Decide your key events

Google’s help explains the terms in conversions versus key events. A key event measures an action that is particularly important to the success of your business. A conversion now refers to an important action that you use to measure and optimise your ad campaigns. For most small businesses, the key events are:

Google lists recommended events, including one for generating a lead, so use standard names where you can.

Step 2: Set it up properly

1. Create a GA4 property for your website and add the tag through your website builder, plugin or Google Tag Manager.
2. Turn on the events above, and mark the important ones as key events in the Admin area.
3. Test each event yourself from a phone: send a form, tap the call and WhatsApp buttons, and check that they appear in the real-time report.
4. Set data retention to 14 months. Google’s data retention guide says standard properties can keep event data for 2 or 14 months, and that the setting affects explorations and funnel reports, not standard aggregated reports.
5. Add collaborators such as your agency, with the lowest role they need.
6. Update your privacy policy and consent banner so they accurately describe your analytics, as India’s data protection law expects.

Tag your links so sources are clear

Add campaign tags to links you share, such as those in ads, emails and social bios, so GA4 shows which one sent each visit. Google explains how campaign URLs work. Use consistent names, for example the same spelling for source and medium each time.

Step 3: Read a short monthly routine

1. Acquisition: which channels brought visitors, such as search, social, direct, ads and referrals.
2. Pages: which pages people used most and which pages started their visits.
3. Key events: how many, and from which sources.
4. Devices: the share of mobile and desktop, to check that your mobile experience is good. See our Core Web Vitals guide.
5. Compare with the previous month and note what changed and why.

Combine this with Google Search Console to see the searches that show your pages, as our keyword research guide explains.

Connect analytics to real enquiries

GA4 shows actions on your site. It does not know which enquiries became customers. Keep a simple enquiry sheet with source, outcome and value, and compare it with GA4 each month. Ask new customers how they found you, since calls, walk-ins and referrals may not appear in GA4.

Mistakes to avoid

• Installing the tag and never defining key events.
• Marking every event as important, so the numbers mean nothing.
• Leaving data retention at 2 months and then wanting last year’s exploration.
• Counting your own visits and tests. Use internal traffic filters if you can.
• Trusting a number you have not tested.
• Collecting personal details in page addresses or events.

The bottom line

Set up a few meaningful key events, test them, keep 14 months of data and read the same handful of reports every month. Then connect the numbers to your enquiry sheet.

If you would like analytics and lead tracking set up for you, our free growth audit includes a tracking review, or read about our digital marketing strategy service.