If I set up a Google ads campaign in Hubspot going to my general contact form which is also a Hubspot form, will Hubspot ensure that the form submits tracked by the Google Ads campaign are only relevant to the Google Ads campaign and DO NOT include all general form submissions from organic search and other sources?
Yes. If the campaign is set up correctly in HubSpot, the “Google Ads” conversion metrics in the Ads tool will only count form submissions from users who actually came via a Google ad click, not all generic submissions to that same form.
How HubSpot Separates Ad vs Organic
HubSpot appends its own UTM and hsa_* parameters to Google Ads URLs (when auto-tracking is on), and uses those parameters plus the HubSpot tracking cookie to attribute a contact/form submission to “Paid search / Google Ads.”
Attribution rules require that a contact has an ad click that started a tracked web session, followed by a form submission; only those submissions are counted as ad conversions in the Ads tool and related attribution reports.
What Happens To Organic Form Fills
Organic or direct visitors who submit the same form are still created/logged as contacts, but their original source is set to “Organic search,” “Direct,” etc., so they are not counted in the Google Ads campaign’s conversion metrics.
In Ads reporting, you can filter by attribution type (e.g., “First ad interaction,” “Last ad interaction,” “All ad interactions”) to see only contacts whose journey includes a qualifying ad interaction, which inherently excludes purely organic form submissions from those ad conversion counts.
Key Requirements To Make This Work
HubSpot tracking code must be on the landing page (or it must be a HubSpot page, which has it by default).
The form must be a HubSpot form (or use the Forms API correctly) and the landing URL used in the ad must include the HubSpot auto-tracking parameters applied via the Google Ads integration.
So you can safely point Google Ads and organic traffic to the same HubSpot form; in HubSpot’s Ads tool and attribution reports, only the subset of submissions with a prior Google Ads click will show up as conversions for that campaign