How to set up call tracking for Google Ads

Set up a pool of tracking numbers with your call tracking provider, sized to your traffic so each visitor session can be assigned a unique number. This is what enables dynamic number insertion.

Too small a pool causes numbers to be reused across sessions, which muddies attribution, so size it to concurrent visitors.

Add the provider's script so the phone number displayed swaps based on the visitor's source, capturing campaign, keyword, and the GCLID. The tracking number forwards to your real line, so the caller's experience is unchanged.

Confirm the swap works across the pages where visitors call from.

Ensure the GCLID from the session is attached to the call record. This is the identifier that links the call back to the exact click and later enables connecting it to a signed client.

Verify the GCLID is present on call records, since without it the call is measured but cannot be tied to downstream value.

Configure the call tracking to send qualifying calls to Google Ads as conversions, using a sensible qualification such as a minimum call duration to filter out wrong numbers and hang-ups.

A duration threshold keeps the conversion signal meaningful rather than counting every accidental dial.

Where intake records outcomes, feed the GCLID back via offline conversion import when a call becomes a signed client. This lets bidding optimize toward calls that become clients, not just call volume.

This closing of the loop is what makes call tracking drive revenue rather than activity.

Test end to end: place a tracked call, confirm it appears as a conversion with the right attribution, and confirm the GCLID survives to any signed-client import. Reconcile call counts against your phone system.

Only once the path is validated should bidding rely on the call conversions.