Setting up tracking from scratch

End-to-end walk-through for a brand-new Google Ads + GA4 + GTM setup.

Fastest path: pick your account on the Tracking page and use “we build the tracking for you” — Campaign Owl generates the complete Tag Manager container automatically. This guide is the manual, do-it-yourself route.

Ready to set up tracking? Start here

Pick an approach — we'll walk you through each step for the account you choose.

I know what I want to track

Tick from common actions (form submissions, phone clicks, purchases, downloads…) or add your own. Get exact step-by-step instructions for each.

Pick an account

Scan my site & tell me what's trackable

We'll crawl up to 50 pages of your site, detect forms, phone links, email links, downloads and checkout pages, then show you a checklist of what we found.

Pick an account

Reference guide

Background reading — the picker above sets everything up for you, but here's the manual version if you want to understand what's happening.

1

Enable auto-tagging in Google Ads

Auto-tagging appends the GCLID parameter to every ad click. Without it, no Google Ads conversion tracking works correctly. This is non-negotiable.

  1. Google Ads → Admin → Account settings
  2. Expand the Auto-tagging section
  3. Tick “Tag the URL that people click through from my ad”
  4. Save
2

Choose your conversion tracking source

You have three realistic options. Pick ONE — don't run multiple in parallel unless you know what you're doing, because you'll double-count. Click a card to jump to the setup steps for that option.

A. GA4 import

Good when GA4 is already well set up. Slightly less accurate for Google Ads bidding than a direct tag — attribution runs through GA4's model first.

B. GTM direct

Recommended for most accounts — the most accurate signal for Smart Bidding, and Campaign Owl can generate the whole container for you.

C. Gtag hardcoded

Simplest for small sites. Paste the Google Ads conversion snippet directly in the site's <head>.

3

If you picked A — GA4 import flow

  1. In GA4: Admin → Product Links → Google Ads Links → link your Google Ads account
  2. In GA4: Admin → Events → toggle “Mark as key event” (Google renamed conversions to “key events” in 2024) for each one (e.g. purchase, generate_lead)
  3. In Google Ads: Goals → Conversions → Summary → + New conversion action → Import → Google Analytics 4 properties
  4. Pick the key events you marked in GA4
  5. Mark the key conversion as Primary (purchase, lead, signup — not page views)
4

If you picked B — GTM direct setup

  1. First, create each conversion in Google Ads so you have IDs to copy: Google Ads → Goals → Conversions → Summary → + New conversion action → pick Website → choose the Category (Purchase, Submit lead form, Contact, Sign-up, Book appointment, etc. — pick from what the dropdown actually offers) → name it clearly → set Value + Count. At the end, choose “Use Google Tag Manager” and copy the Conversion ID (AW-XXXXXXXX) + Conversion Labelshown — you'll paste these into GTM below. Repeat for every conversion you want to track.
  2. In GTM, add a Conversion Linker tag. Trigger: All Pages. This is the foundation — without it, conversion attribution silently breaks.
  3. For each Google Ads conversion you created, add a Google Ads Conversion Tracking tag in GTM — paste in the Conversion ID + Label you copied
  4. Set the trigger to the specific event that represents a real conversion (thank-you page view, form submit, tel: / mailto: click, purchase event)
  5. Also add a GA4 Configuration tag on All Pages (even if you're not importing from GA4 — audiences still benefit)
  6. Preview in Tag Assistant → fire the real event → confirm the tag reports “Fired”
  7. Submit + publish the container
5

If you picked C — gtag hardcoded

  1. In Google Ads: Goals → Conversions → Summary → + New conversion action → pick Website → choose the action (purchase, lead, signup)
  2. Copy the Global site tag (gtag.js) — paste in the <head> of every page
  3. Copy the Event snippet — paste on the conversion-completion page only (thank-you page / order-confirmation page)
  4. Mark the conversion as Primary in Google Ads
6

Test before going live

  1. Install the Tag Assistant Chrome extension
  2. Click one of your actual ads in a search result — check the URL contains ?gclid=…
  3. Complete the conversion flow end-to-end (add to cart → checkout → purchase on staging)
  4. In Tag Assistant: confirm the Conversion Linker + Conversion tag both fire with “Success”
  5. Wait 24 hours → check Google Ads → Conversions → your action shows 1+ conversion
  6. Run the tracking audit on the account — should pass all checks

Done.

Once the test conversion appears in Google Ads, re-run the tracking audit from the account list to confirm everything's wired correctly.