Conversion tracking for better Google Ads management

Google Ads needs clear data. If a conversion is missing or counted twice, the account learns from incorrect data.

Many accounts only measure visits to a thank-you page.

That is often not enough. A form may be incomplete, an appointment may not be suitable, or the contact may already have come through another channel. Before implementation, decide which action actually matters to you.

Define conversions before implementation

A conversion is an action taken after someone clicks an ad. For an online shop, this is usually a purchase. In B2B, it can also be an enquiry, an appointment or a phone call.

Choose only a few main goals. If every click on an email address counts as a conversion, the figures in the account will no longer match your sales process.

Typical goals include:

• a submitted contact form
• a booked appointment
• a call from an ad
• an enquiry through a calculator
• a purchase in the online shop

A PDF download can also be valuable. In most cases, however, it should only be an additional metric. Google Ads should bid on actions that matter to your business.

Separate primary and secondary conversions

Google Ads uses primary conversions for reporting and bidding. This category should therefore include only enquiries, appointments or purchases that you consider your main goal.

Secondary conversions show interest but do not guide bidding. They may include clicks to a contact page or downloads. This keeps the data visible without distorting the analysis.

Fewer goals create clearer reports.

Also check whether the same action is counted twice. This often happens when a form is tracked through Google Ads and imported through Google Analytics 4 at the same time. The account then shows two contacts even though only one was received.

Use a Google Ads tag or Google Analytics 4

A Google Ads tag sends the conversion directly to the Ads account. This works well for core goals such as purchases, enquiries and appointment bookings.

Google Analytics 4 can also send events to Google Ads. This can be suitable if your events are already set up correctly there. The accounts must then be linked and the event names must be correct.

Use one clear measurement path for each conversion.

Direct Ads tags are often easier to test. An import from Analytics can make sense when you already use an event there for other reporting. Document which tag measures which conversion.

Trigger tags in Google Tag Manager

Google Tag Manager helps you manage tags in one place. Even so, every tag needs an appropriate trigger.

A click on the submit button is not enough. The user may have missed a required field, or the form may display an error. The tag should fire only after a successful submission.

Use a genuine thank-you page or an event from the form. Test the process with a normal submission. Then visit the page again and check that the tag does not count another conversion.

The same applies to appointment tools.

Some tools open an external page. Others display the booking directly on your website. The trigger must match the process used by the relevant tool.

Consider consent and data protection

Tracking tags must not run independently of your website settings. The consent banner determines which data may be processed after consent has been given.

Google Consent Mode can send the consent status to Google. However, it replaces neither a consent banner nor a review of your privacy policy. The right configuration depends on the services you use and your website.

Document the tags and their rules.

Check what loads before and after consent. If there are open questions about data protection or the legal position, a qualified professional should review the specific solution.

Choose suitable values and counting rules

For an online shop, you can send the actual order value to Google Ads. The value and order number must be transferred correctly from the shop.

For an enquiry, you can use a fixed value. This value is not revenue. It only helps classify different types of conversions in the account.

The counting rule also matters. For purchases, every order can count. For a contact form, one conversion per ad click is often more suitable because someone may submit the form more than once.

Choose this rule deliberately.

Test tracking before launch

Test tracking before assessing campaigns. Open the website in a test window and go through the steps for a form, appointment or purchase.

Check in Tag Manager whether the correct trigger fires. Then check in the Google Ads account whether the conversion is detected. Reports in the account may appear later, so reporting does not replace a direct test.

Test on a smartphone as well. Forms and embedded tools can behave differently there than on a desktop computer.

Tracking comes before budget. Our article, “Plan your Google Ads budget with purpose”, helps you consider spend and measurement together.

Send qualified leads to Google Ads later

A submitted form is not always a qualified lead. Only later does it become clear whether the contact can be reached, has a genuine need and fits your offer.

You can send this information to Google Ads as an offline conversion. Click IDs or other permitted data must be stored in the CRM for this purpose. Sales and back-office teams need clear rules, otherwise entries will be missing.

This data must be properly maintained in the CRM. Our article, “A CRM Needs a Clear Process for SMEs”, provides the foundation.

Review tracking regularly

A new website, a new form or a plugin update can disrupt tracking. A tag that worked yesterday may then be missing or count twice.

Check all important conversions after changes to the website. Also compare the figures in the Ads account with actual enquiries in the CRM or inbox.

Differences often have clear causes.

Sometimes a tag fires twice. Sometimes an event is missing after a rebuild. A short test is therefore worthwhile before you manage campaigns based on this data.

Frequently asked questions

How do I set up Google Ads conversion tracking for a form?

First, create a conversion for a successfully submitted form. The tag should fire only after confirmation, for example on a thank-you page. A click on the submit button is too early.

Should I use Google Ads or Google Analytics 4 for conversions?

Use one clear measurement path for each conversion. A direct Google Ads tag is often easy to check for core goals. An import from Analytics can be suitable if your events are already set up correctly there.

Why does Google Ads show no conversion?

First, check the trigger in Tag Manager. Then review consent settings, the conversion ID and the tag status. Reports in the Google Ads account may also appear later.

What are primary and secondary conversions?

Primary conversions usually guide bidding in Google Ads. Secondary conversions are for observation only. For this reason, only genuine enquiries, appointments or purchases should be primary.

Do I need to account for Google Ads tracking in the consent banner?

Yes, the tags must match the settings in your consent banner. Consent Mode can send technical data about the status. However, it does not replace appropriate consent or a review of your texts.

How often should I check Google Ads conversion tracking?

Check tracking after changes to forms, tools and the website. Also compare the measured figures with actual enquiries regularly. This helps identify missing or duplicate conversions early.