GA4 and Google Ads reporting – the numbers an ad-driven site should check every month

GA4 reporting starts with choosing fewer numbers

GA4 records a lot of detail, which is exactly why browsing every screen wastes time. For a site that relies on ads, these five numbers make a solid monthly baseline:

• Key events: form submissions, completed bookings, phone taps or purchases – the actions you count as results
• Session source / medium: where visits come from, such as google / cpc (Google Ads) or google / organic (search)
• Key event rate: the share of visits that ended in a result. It reflects both ad quality and page quality
• Engagement rate: the share of visits that lasted over ten seconds or viewed two or more pages – a quick check on whether your landing pages get read
• Landing pages: visits and results by the first page opened, so you can see whether ads point to the right page

All of this depends on inquiries and bookings being recorded correctly as key events. If that is not in place yet, see our GA4 setup service, and for the basics read what GA4 is.

How to read Google Analytics: four reports to open each month

Opening the same reports in the same order every month makes changes easy to spot. These four cover most of what an ad-driven site needs:

• Acquisition › Traffic acquisition: visits and key events by channel or source / medium – compare ads, search and social
• Engagement › Landing page: whether the pages your ads point to are read and convert
• Engagement › Events: a quick check that form, call and booking events are still firing
• Explore › Funnel exploration: landing page → form → thank-you page, to see where people drop off

Compare each month with the previous month and the same month last year to avoid reading seasonal swings as trends – just switch on "Compare" in the date range. If a number suddenly jumps or collapses, first check that event tracking has not stopped.

What to check in a Google Ads report

GA4 shows what happens after people arrive. The Google Ads report shows what happens before: when your ad appears, who clicks and what it costs. Read together, they tell you where to improve.

• Cost, clicks and average CPC: which campaigns and keywords use the budget
• Click-through rate: whether the ad text matches what people searched for
• Conversions and cost per conversion: what one inquiry or booking costs
• Search terms report: the actual searches that triggered your ads; add irrelevant ones as negative keywords
• Impression share: how often your ad showed out of all chances it had – it reveals budget or bid limits
• ROAS (for online shops): revenue per unit of ad spend

GA4 and Google Ads rarely report exactly the same number of conversions. They use different date rules, different attribution settings and are affected differently by cookie consent. Decide up front which source is your reference for monthly comparisons, and the report stays consistent.

How to build a monthly ad report – and where it goes wrong

A useful report ends with a short list of what to do next. This order keeps it focused:

• State the goal in one line: for example, "20 inquiries a month within our target cost per inquiry"
• Summarize results: cost, conversions and cost per conversion, next to last month and last year
• Find the reason for changes: split by campaign, keyword and landing page to locate the biggest moves
• Log what was done: ad copy changes, new negative keywords, page edits – the context behind the numbers
• Pick next month's actions: two or three tests, checked in the next report

Most problems sit in the tracking itself: an inquiry event counted twice, test submissions mixed into results, or Google Ads not linked to GA4. If you want charts that update on their own, connect GA4 and Google Ads in the free Looker Studio and the report keeps the same format every month.

The UNANOBO monthly report: numbers and next steps on one page

When UNANOBO runs your ads or your site, the monthly report shows on one page where you stand against the goal and what happens next month. It covers spend, inquiries or bookings, cost per result, the landing pages that worked and what the search terms revealed. You receive it by message, in Japanese or English. Ad accounts and GA4 stay in your name, so you can check the numbers yourself at any time.

It all starts with a free demo. Based on your current site, we build a new design with a clear path to an inquiry and the tracking points built in, together with a proposal of which actions to count as key events. The founder handles everything personally, from the first demo to reports and improvements. For ongoing updates and maintenance, see website operation service.