Last checked against Google’s documentation on 29 September 2026.
The short answer
If your Google Ads conversions dropped to zero while clicks carried on as normal, the ads are almost never the cause. Something between the click and the conversion stopped being recorded: the tag stopped firing, a form or thank-you page changed, the conversion action was switched to secondary, or consent settings now block measurement. The other common cause is not a problem at all: recent days are still filling in.
Work through it in this order: rule out reporting lag, read the tracking status in Google Ads, test the tag with Tag Assistant, then check what changed on the website and in the account. Most cases are found in the first three steps.
First: is it a real drop or conversion lag?
Google Ads reports a conversion against the date of the click, not the date the conversion happened. Google’s conversion lag documentation explains that this makes recent periods look worse than they are: spend is fully reported, but people who clicked in the last few days may not have converted yet. Separately, Google notes that conversion reporting itself can take 3 to 24 hours to update.
So before you act, check three things:
- How many days are affected? One or two days at zero in a small account can be normal. Several days in a row at zero, in an account that usually records conversions every day, is not.
- How long do your customers usually take? Go to Campaigns, choose Segment, then Conversions and Days to conversion. If most of your conversions arrive a week after the click, the last week will always look light.
- Did clicks drop too? If clicks also fell to near zero, the problem is serving (budget, billing, disapprovals, paused campaigns), not tracking.
Read the conversion action status
Go to Goals > Conversions > Summary and look at the status of each conversion action. Google’s help articles use two sets of labels, so you may see either depending on where you look.
The conversion tracking troubleshooter describes these overview statuses:
| Status | What Google says it means |
|---|---|
| Active | Everything is working as intended. |
| Needs attention | There are issues to address, but conversions have not stopped entirely. |
| Misconfigured | Conversions have stopped because of a setup error or a broken tag. |
| Awaiting conversions | No conversions recorded in the last 7 days. Often a new action, paused campaigns, or low traffic. |
The tracking status column and Google’s tag troubleshooting articles also use these older labels:
- Unverified: the tag for this conversion action has not fired yet.
- No recent conversions: Google has seen the tag but recorded no conversions in the last 7 days. Usually no ad traffic is reaching the page with the tag, or the conversion step itself is broken.
- Tag inactive: Google no longer sees the tag and has recorded no conversions in the last 7 days. The tag has been removed or stopped loading.
“No recent conversions” and “Tag inactive” point to different fixes. The first means the tag is on the site but the conversion isn’t happening or isn’t reaching it. The second means the tag itself is gone.
Test the tag with Tag Assistant
Google Ads links straight into Tag Assistant from the status column. Google’s Tag Assistant steps are:
- Go to Goals > Summary and choose All conversions from the dropdown.
- Find an action showing Unverified, Tag inactive, or Needs attention. Hover over the status and select Troubleshoot, then Continue.
- Enter a landing page URL (not the thank-you page) and select Connect. Your site opens in a new tab.
- Complete the conversion the way a customer would: submit the form, place a test order, click the call button.
- Select Finish and read the results, then Close Tag Assistant.
Tag Assistant checks that the Google tag or Google Tag Manager container is installed and whether the conversion fired. Google says the status updates roughly 30 minutes after you close it. If the Google tag loads but the conversion event never fires, the problem is the trigger or the page, not the tag.
Google Tag Manager
If you track through Google Tag Manager, check that the Conversion Linker tag still fires on all pages, that the container version with your conversion tag is the one published, and that the trigger still matches (a renamed form, a new button ID, or a changed thank-you URL will stop a trigger silently).
Website changes that break tracking
If the drop starts on a specific day, ask what changed on the website that day. The usual causes:
- A new form or form tool. The form now submits without a page load, so a “thank-you page” trigger never fires.
- A moved or renamed thank-you page. The conversion trigger still waits for the old URL.
- A redesign or new theme. The Google tag or the Tag Manager snippet was dropped from the template.
- A new checkout or booking tool on another domain, where your tag isn’t installed.
- Redirects that strip click IDs. Google’s redirect troubleshooting article explains that if the landing page redirects without passing on the GCLID, the click can’t be tied to a later conversion.
The fastest check is to complete a real conversion yourself, from an ad click if you can, and watch whether it fires in Tag Assistant.
Primary vs secondary: the silent switch
A conversion action can be recording perfectly and still vanish from the Conversions column. Google’s article on primary and secondary actions explains that primary actions are used for bidding and reporting, while secondary actions are excluded from the Conversions column and only appear in All conv.
Check three things:
- Add the All conv. column next to Conversions. If All conv. is still healthy, tracking works and the issue is a goal setting.
- Check whether someone changed the action to Secondary (observe only). You change it back by editing the goal, expanding Conversion action optimization, and choosing Primary, as described in Google’s conversions summary guide.
- Check the campaign’s goals. A campaign set to campaign-specific goals only counts the goals selected there, so a new or edited campaign may not be using the goal you expect.
Then open Change history for the day the numbers dropped and look for edits to goals or conversion actions.
Consent mode and cookie banners
A new cookie banner, or a change to an existing one, can cut reported conversions sharply. Google’s consent mode documentation describes two setups. In basic consent mode, Google tags don’t load until the visitor interacts with the banner. In advanced consent mode, tags load and, when consent is denied, send cookieless pings instead of storing cookies. Google uses modeling to estimate conversions it can’t observe; according to Google’s consent mode modeling page, modeled conversions appear in the Conversions column once the account meets the data thresholds.
A banner that blocks the Google tag entirely, or a consent tool that never passes the visitor’s choice to Google’s tags, can take conversions to near zero. Test the site with consent both accepted and declined, and confirm in Tag Assistant that the consent state is being sent.
Enhanced conversions
Enhanced conversions add hashed first-party data, such as an email address, to your conversion tag so Google can match more conversions to ad clicks. Google’s enhanced conversions for web page says enhanced conversions for web and for leads are now one on/off setting, and that starting from April 2026 Google Ads accepts user-provided data from website tags, Data Manager, and API connections.
Enhanced conversions improve match rates; they don’t replace a working tag. If conversions dropped to zero, fix the base tag first. After that, check the enhanced conversions diagnostics in the conversion action for errors, and confirm any required terms for enhanced conversions have been accepted.
Why Google Ads conversions dropped to zero: a checklist
- Confirm clicks didn’t drop too. If they did, look at serving, not tracking.
- Check the Days to conversion segment. Don’t react to the last few days alone.
- Read the status of each action under Goals > Conversions > Summary.
- Compare Conversions with All conv. to spot a primary-to-secondary change.
- Run Tag Assistant and complete a real test conversion.
- Check Change history and the website’s release notes for the day the drop began.
- Test the cookie banner with consent accepted and declined.
- Once the base tag works, check enhanced conversions diagnostics.
If the drop coincides with a wider fall in results, work through why your Google Ads performance is down once tracking is confirmed. And if conversions are recording but the numbers look inflated, read one vs every conversion counting.
Boxoo’s tracking and measurement agent reads each conversion action’s status and daily conversion counts, and files a case when an action stops recording, with the dates and numbers as evidence. Website tags and conversion setup can’t be changed through the Google Ads API, so the case gives you the exact steps to follow. To see what it finds on your account, run a free Google Ads audit.
