Why Is My Google Ads Conversion Tracking Not Working

If you have ever sat in front of your Google Ads dashboard wondering why your conversion data looks completely wrong, or worse, shows nothing at all, you are not alone. Conversion tracking issues are one of the most common and frustrating problems that advertisers face, and they can have a serious knock-on effect on your campaign performance, your bidding strategies, and ultimately your return on investment. The good news is that the majority of these problems are fixable once you know where to look and what to look for. This guide walks you through the most likely reasons why your Google Ads conversion tracking is not working and what you can do to resolve it.

The Conversion Tag Is Not Firing Correctly

This is the most straightforward cause and yet it is the one that catches even experienced advertisers out. Your Google Ads conversion tag needs to fire on the right page at the right moment, typically on a thank you page or order confirmation page, after the user has completed the desired action. If the tag is placed on the wrong page, fires too early in the journey, or is simply missing from the page altogether, your conversions will not register.

The best way to check this is to use the Google Tag Assistant Chrome extension or to inspect the page using Google Tag Manager's preview mode. Both tools will tell you whether your tag is present, whether it is firing, and whether there are any errors associated with it. If you find the tag is missing, you will need to either add it manually to the page or set it up correctly through Google Tag Manager.

Conversion Actions Are Set Up But Not Verified

Setting up a conversion action inside Google Ads is only half the job. Until Google has actually recorded at least one conversion through the tag, the status will show as "Unverified". Many advertisers see this status and assume everything is fine, when in reality it means Google has not yet confirmed that the tag is working. If your tag remains unverified for a prolonged period after setup, it is a strong signal that something is not functioning as it should.

To verify your setup, complete a test conversion yourself. Go through your own checkout process or fill in your own contact form using a test transaction if your platform allows it. Then check your Google Ads account to see whether the conversion has been recorded. You can also check the status column within your conversion actions table, which will update once Google has successfully detected the tag firing.

The Wrong Conversion Window or Attribution Model Is Applied

Even when your tag is firing perfectly, you might notice that your conversion numbers do not match what you expect. One reason for this is that the conversion window, which is the period of time after a click during which a conversion can be attributed to your ad, may be set too short for your sales cycle. If someone clicks your ad, spends a week thinking about it, and then converts on day eight, but your conversion window is only set to seven days, that conversion will not be recorded against your campaign.

Similarly, the attribution model you have selected will influence how credit is assigned across different touchpoints. If you are using a last-click model and your customer has interacted with multiple channels before converting, the data you see in Google Ads may not reflect the full picture. It is worth reviewing both of these settings within your conversion action configuration and aligning them with your actual customer journey. Google provides a useful overview of attribution models within the Google Ads Help Centre.

Google Analytics Goals Are Imported Incorrectly

A significant number of advertisers choose to import their conversion goals from Google Analytics rather than setting up native Google Ads conversion tags. This approach can work well, but it comes with its own set of potential pitfalls. If the Google Analytics goal itself is misconfigured, if the destination URL does not match your thank you page exactly, or if the Analytics and Ads accounts are not properly linked, the data will either fail to import or will import inaccurately.

Before relying on imported Analytics goals, double-check that the goal is actually recording conversions within Google Analytics first. You can do this by going to Conversions in your Analytics reports and checking whether completions are being recorded. If the goal is working correctly in Analytics but not appearing in Google Ads, then the issue likely lies with the account linking or the import settings themselves.

A Website Update Has Broken the Tag

This is an incredibly common cause of conversion tracking suddenly stopping, and it often goes unnoticed for days or even weeks. Whenever a website undergoes a redesign, a platform migration, or even a minor update to the thank you page URL, the conversion tag can stop working. If the page the tag lives on has been removed, renamed, or redirected, the tag simply has nowhere to fire.

If your conversion data was working perfectly and then dropped off suddenly, a website change is one of the first things you should investigate. Check whether your thank you page URL is still live and returning a 200 status code. Check whether any recent site updates have altered the page structure or removed any custom code. If you are using Google Tag Manager, verify that your triggers and tag configurations still match the current state of your website.

Duplicate Conversion Tracking Is Inflating or Skewing Data

On the opposite end of the spectrum, some advertisers find that their conversion numbers seem too high rather than too low. This is often caused by having duplicate conversion tracking in place, for example, running both a Google Ads native tag and an imported Analytics goal that both represent the same conversion action. The result is that a single conversion gets counted twice, which inflates your data and gives your bidding strategies an inaccurate signal to work from.

To audit this, review every conversion action listed in your Google Ads account and check whether any of them are capturing the same user behaviour. If you find duplicates, you can either remove the redundant conversion action or change its setting so that it is not included in your primary conversion column. Keeping your conversion data clean and accurate is essential, particularly if you are using smart bidding strategies that rely on that data to make decisions.

Consent Mode Is Blocking Tag Firing

With increasing attention on data privacy regulations, including the UK GDPR, many websites now run cookie consent banners that require users to opt in before tracking tags can fire. If your website uses a consent management platform and a user declines tracking cookies, your Google Ads conversion tag will not fire for that user. Depending on your audience and how your consent banner is configured, this can lead to a meaningful drop in recorded conversions.

The solution here is to implement Google Consent Mode, which allows Google to use modelled conversions to fill in the gaps where consent has not been granted. This does not bypass consent or compromise user privacy; it simply allows Google to make informed estimates based on aggregated, anonymised data. Making sure Consent Mode is properly integrated with your consent management platform is an important step that many advertisers overlook.

Bringing It All Together

Conversion tracking is the foundation upon which your entire Google Ads strategy is built. Without accurate data flowing through your account, your bidding strategies are working blind, your reporting is unreliable, and you have no clear way of knowing whether your advertising is actually delivering a return. Whether the issue is a misfiring tag, an incorrect configuration, a website change, or a consent-related blocker, each of these problems is solvable once you know where to look.

The most important thing you can do is audit your conversion tracking regularly rather than assuming it is working simply because you set it up at some point in the past. Websites change, platforms update, and configurations drift over time. Making conversion tracking health a routine part of your account management will save you from the frustration of discovering that weeks of campaign spend have been optimising towards incomplete or inaccurate data.