Google Ads conversion tracking: a setup checklist

Google Ads uses your conversion data to decide who sees your ads and how much to bid. If that data is wrong (missing, duplicated, or counting the wrong things), the platform optimizes toward the wrong goal, and no amount of campaign tuning will fix it.

That is why conversion tracking is the first thing we check in any ad account. Use this checklist to set it up properly, or to audit what you already have.

1. Decide what actually counts as a conversion

Start with the business, not the tool. List the actions that genuinely indicate a potential customer:

• Contact or quote form submitted (and the thank-you state reached).
• Phone call from the ad or from the website, ideally longer than a minimum duration.
• Purchase completed, with its value.
• Demo booked or trial started.

Then mark only these as primary conversions, which are the ones Google Ads bids toward. Page views, scrolls or clicks on a “Contact” button can be tracked as secondary actions for insight, but should not drive bidding.

2. Choose how tracking is installed

There are two common setups:

• Google Tag Manager with the Google Ads conversion tag: the most precise option, and our usual recommendation.
• Importing key events from Google Analytics 4: simpler to maintain if GA4 is already well configured, but the attribution and timing can differ from native Google Ads tags.

Pick one source for each conversion. Counting the same form submission from both is one of the most common causes of inflated results.

3. Fire conversions on success, not on clicks

A conversion should fire when the action has actually succeeded: after a form is validated and submitted, or when the order confirmation appears. Tracking a click on the submit button counts failed submissions and impatient double-clicks too.

4. Set conversion values and counting correctly

• Value: e-commerce sites should pass the real order value. Lead-generation sites can assign an estimated value per lead type, which helps when bidding on value later.
• Count: use “one” per click for leads (one person filling a form twice is still one lead) and “every” for purchases.
• Conversion window: match it to how long your customers take to decide.

5. Turn on enhanced conversions

Enhanced conversions send a hashed (scrambled) version of details the customer entered, such as an email address, to help Google match conversions that would otherwise be lost. Make sure this is covered in your privacy policy and consent setup before enabling it.

6. Track phone calls

For many service businesses, calls are the most valuable leads. Use call assets and call reporting for calls from ads, and website call tracking (a forwarding number shown to ad visitors) for calls from your site. Set a minimum call length so wrong numbers don’t count.

7. Connect offline sales if you can

A form submission is not a sale. If your CRM records which leads became customers, importing those outcomes back into Google Ads lets bidding favor the searches and audiences that produce real revenue, not just form fills. This is one of the most valuable upgrades for lead-generation accounts.

8. Respect consent

In regions with consent requirements, use a consent banner and Google’s consent mode so tags behave according to each visitor’s choice. Expect some conversions to be modeled rather than observed.

9. Test everything before trusting it

• Use Tag Assistant to submit a test lead and confirm the conversion fires once.
• Check the conversion appears in Google Ads (it can take a few hours).
• Compare a week of Google Ads conversions with the leads you actually received. Big gaps mean something is wrong.

10. Keep it honest over time

Tracking breaks quietly: a website update changes a form, a new page lacks the tag, a plugin removes the thank-you page. Review conversions against real leads every month.

Common mistakes we find

• The same lead counted twice (GA4 import plus a native tag).
• Button clicks treated as conversions.
• Micro-actions such as page views set as primary conversions.
• No call tracking for businesses that win most work by phone.
• Smart bidding switched on before conversion data is reliable.

Once tracking is right, every other decision in the account becomes clearer. If you want a second pair of eyes on your setup, we include a tracking review in every PPC audit. For the website side, such as landing pages that convert the traffic you pay for, see our web design work.