Enhanced Conversions for Leads: Setup & Common Issues

Many leads do not close on the website. A form submission becomes a phone call, a quote and then a sale days later. Enhanced conversions for leads let you report those offline outcomes back to Google Ads using first-party data from the original form, so bidding can learn which leads became customers.

How it works

1. A visitor submits a form. Your tag captures their email or phone number and sends it to Google hashed (SHA-256) with the lead.
2. Your CRM records the lead and, later, whether it became a qualified lead or a sale.
3. You upload or import those outcomes with the same hashed email or phone.
4. Google matches them to the original ad interaction, without needing the GCLID.

Before you start

• Accept the customer data terms in Google Ads
• Make sure your privacy policy and consent banner cover this use of data
• Confirm your form collects email or phone in a consistent format

Setup outline

1. In Google Ads, go to Goals → Settings and turn on enhanced conversions for leads. Choose Google Tag Manager or the Google tag as the method.
2. In GTM, create a User-Provided Data variable that reads email and phone from the form or, better, from the dataLayer.
3. Add it to your Google Ads conversion tag (or Google tag) so the data is hashed and sent with the lead.
4. Create an offline conversion action for the later stages, for example “Qualified lead” and “Closed sale”.
5. Upload those outcomes from your CRM on a schedule, using the same email or phone.

Common issues

• Data not captured: the variable reads a field that is empty when the tag fires; read from the dataLayer instead of the page
• Inconsistent formatting: phone numbers without country codes or with spaces; normalise to E.164 format before hashing
• Consent not granted: with Consent Mode, ad_user_data must be granted for the data to be used
• Uploads that do not match: different email in the CRM than on the form; keep the original form email on the lead record
• Diagnostics ignored: check the enhanced conversions diagnostics in Google Ads after a few days

Why it matters

When Google learns from qualified leads rather than every form fill, bidding shifts toward the searches and audiences that produce real customers. For businesses with long sales cycles this is often the biggest improvement available.

Enhanced conversions are part of a full Google Ads conversion tracking setup. If you want help connecting your CRM, see conversion tracking and web analytics.