If you can't tell which ad brought the lead, you're guessing
Track only actions that are worth money: form submissions, qualified calls, booked meetings and purchases. Mark them as key events in GA4, import or set them up as primary conversions in Google Ads, and enable enhanced conversions where you can. Then reconcile against what actually arrived, because each ad platform attributes conversions by its own rules and they will claim the same lead. Automated bidding learns from what you count, so counting the wrong thing makes it optimize toward the wrong people.
Ask a business owner how many leads came from the website last month and most can give a rough number. Ask how many came from Google Ads, how many from search, how many from referrals, and the answers get vague.
Without that breakdown, marketing decisions are opinions. You don’t know what to scale or what to stop.
What to count
Count only actions worth money:
- Form submissions, confirmed as successful.
- Calls, ideally with a minimum duration, from the site and from call ads.
- Booked meetings, if you use a scheduler.
- Purchases, with value, for stores.
What not to count as a conversion: visits to the contact page, time on site, scroll depth, clicks on anything. They are useful as analytics. As conversions, they teach automated bidding to find people who scroll rather than people who buy.
Setting it up
- Forms either redirect to a thank-you page or fire an event after a successful submission. Mark that event as a key event in GA4.
- Calls and messages are tracked as clicks on
tel:links and messaging links, and through Google’s call tracking for call ads. - Purchases fire an event with value and transaction ID from the store after payment.
- Link GA4 to Google Ads, or set up conversions directly in Ads, and make only the money actions primary.
- Enable enhanced conversions, which send hashed first-party data with each conversion to improve matching when cookies are limited.
- Test. Submit a form, make a call, and confirm each appears. Tracking you haven’t tested doesn’t work.
Offline conversions close the loop
For service businesses, the form submission is not the sale. If your CRM records which leads became customers, importing that back into Google Ads lets the system optimize for leads that close, not just leads that arrive. It is the single biggest improvement most lead-gen accounts can make.
Why the numbers never match
Compare reports and you’ll see Google Ads claim one figure, Meta another, GA4 a third, and your inbox a fourth.
Each platform attributes by its own rules. If someone clicked a Google ad on Monday, saw an Instagram ad on Wednesday and filled in the form on Friday, both platforms may claim that lead. Add the reports together and you get more leads than you received.
No platform report is the final number. The final number is what arrived.
The oldest tool still works
Ask every lead how they found you. Put it in the form as a short dropdown: search, ad, referral, social, other. People don’t remember perfectly, but across a few dozen leads the pattern is clear, and when it lines up with analytics you know your tracking works.
Three numbers a month
- Leads, total and by channel.
- Cost per lead for each paid channel.
- Leads that became customers.
With those three you can make almost any marketing decision. How to turn them into a budget is in what Google Ads costs a small business.
Common questions
Why do Google Ads and Meta report more conversions than I received?
Each platform credits itself when a person interacted with its ad within its attribution window. The same person may have clicked a Google ad and seen a Meta ad, so both count the lead. Counting easy actions such as page views as conversions inflates the numbers further.
What are enhanced conversions?
A Google Ads feature that sends hashed first-party data, such as the email address entered in a form, along with the conversion. It helps Google match conversions to ad clicks when cookies are limited. It needs to be disclosed in your privacy policy.
Do I need a consent banner for analytics?
For visitors in the EU and UK, consent rules are stricter and Google requires Consent Mode for certain features when you serve ads there. US requirements depend on the state and what you collect. Have counsel confirm what applies to your audience.
