How to set up Google Ads conversion tracking for B2B SaaS
Without conversion tracking, Google Ads optimises for clicks — not for the actions that matter. For B2B SaaS, properly configured conversion tracking tells Google which clicks became demo requests, trial signups, or form submissions — so the algorithm can find more people like that. Here's the exact setup process.
Running Google Ads without conversion tracking is like running outbound without a CRM — you have activity but no way to know what's working. Conversion tracking tells Google which clicks resulted in the action you care about: a demo request, a trial signup, a form submission. Without it, Google's Smart Bidding optimises for clicks and impressions. With it, Google optimises for the users most likely to complete your conversion — which is a fundamentally different (and much better) optimisation target.
What should you track as a conversion for B2B SaaS?
Primary conversion: demo request or trial signup — the action that starts a potential sales relationship. This is what you want Google's algorithm to optimise toward. Secondary conversions (track but don't use for bidding): pricing page views, feature page engagement, scroll depth on landing pages. These are useful for understanding funnel behaviour but shouldn't be primary conversion goals — optimising for pricing page views will get you people who look at pricing, not people who book demos.
How do you set up conversion tracking using Google Tag Manager?
Step 1: Create a Conversion Action in Google Ads — go to Tools → Conversions → New Conversion Action → Website. Define the action (demo request form submission), assign a value if you know your average deal size, and set the counting to "One" (one conversion per click). Step 2: Google generates a conversion tag. In Google Tag Manager, create a new Tag using the Google Ads Conversion Tracking template. Paste in the Conversion ID and Conversion Label. Step 3: Set the Trigger to fire when the user lands on your thank-you page (use a URL contains trigger on your confirmation page URL). Step 4: Publish the GTM container. Step 5: Test using GTM's Preview mode — submit the form and verify the conversion tag fires.
What if you don't have a thank-you page?
If your form shows a success message on the same page rather than redirecting to a thank-you URL, use a different trigger. In GTM, create a trigger that fires when a specific element becomes visible (the success message div) or when a form submission event fires. This requires CSS selector knowledge or developer help. The easiest fix: add a redirect to a dedicated thank-you page after form submission — even a simple /thank-you URL. This is the most reliable conversion tracking setup and worth the 30 minutes to implement.
How do you verify conversion tracking is working?
In Google Ads, go to Tools → Conversions → find your conversion action. Status should show "Recording conversions" within 24 hours of the first tracked conversion. If it shows "No recent conversions" after a week of campaign running with clicks, the tag isn't firing correctly. Use GTM Preview mode to test, or install the Google Tag Assistant Chrome extension to verify the tag fires on the thank-you page. Don't run Smart Bidding strategies (Target CPA, Maximize Conversions) until you have at least 30 conversions recorded — before that threshold, the algorithm doesn't have enough data to optimise effectively.