Installation
Install once, in the page head, through GTM or gtag — never both. Duplicate tags double-count page views.
Key events
Mark only real outcomes as key events: form submitted, call booked, purchase. Scroll and click events can stay as ordinary events.
Clean data
Filter internal traffic, set data retention to the maximum, and exclude payment gateways as referrers.
Connections
Link Google Ads and Search Console, and pass lead IDs so qualified outcomes from the CRM can be matched back to campaigns.
- Consistent lowercase UTMs
- One owner of the tag container
- A monthly tracking health check
Frequently asked questions
Should I use GTM or gtag?
GTM, if more than one person or tool needs to add tracking. gtag is fine for very simple sites.
Why do GA4 and ad platform numbers differ?
Different attribution models, consent gaps and modelled conversions. Treat GA4 plus CRM as the source of truth.
Sources and evidence
- Google Analytics Help — Key events
- Google Tag Manager Help — Set up and install Tag Manager
- Google Analytics Help — Collect campaign data with custom URLs
- Google Tag Platform — Consent mode
- Case study: Tech Leads IT — IT training · Global demand gen
- Case study: Block Matrix IT Solutions — B2B IT solutions
Written by
Freelance Performance Marketing & AI Automation Consultant
- 6+ years in performance marketing; ₹1.2Cr+ ad spend managed at 4.6x blended ROAS
- Former Digital Marketing Manager at Vidyavriti, leading a 7-member team
- B.Tech Civil Engineering + MBA Marketing & Finance, Gautam Buddha University
Want this applied to your account?
I run this playbook on live budgets. See the case studies or get in touch.
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