Call tracking changes everything in lead generation

Phone calls are a significant and often majority conversion channel for many service businesses. A solicitor, a plumber, a car dealership, a private medical practice - in all of these, the phone call is often the first meaningful contact. If your Google Ads account only counts form submissions as conversions, the campaigns that drive phone calls look like they are underperforming even when they are delivering real business.

How call tracking works

Call tracking dynamically replaces the phone number displayed on your website with a unique tracking number for each visitor source. When a visitor from a paid search ad calls that number, the call is attributed to the paid search campaign that drove the visit. Call tracking platforms capture call duration, time of call, caller location, and in some cases call recordings for quality assessment. The conversion data feeds back into Google Ads as a call conversion event.

Google Ads native call tracking

Google Ads has built-in call tracking through call extensions and call ads. When someone clicks a call extension directly from the ad, Google can track that call as a conversion. The limitation is that it only tracks calls initiated directly from the ad - not calls made after the visitor arrives on your website. For full call attribution including website calls, a third-party call tracking platform is needed.

Third-party call tracking platforms

CallRail, Infinity, and ResponseTap are the most commonly used in the UK market. These platforms provide dynamic number insertion, integration with Google Ads and GA4, and detailed call reporting. The cost is typically 50 to 150 pounds per month depending on call volumes. For businesses where phone is a primary conversion channel, that investment is easily justified by the improvement in attribution accuracy and better bidding decisions it enables.

Setting call duration thresholds

Not every call is a genuine conversion attempt. Misdials and very short calls should not count as conversions in your smart bidding data. Set a minimum call duration threshold - typically 45 to 90 seconds for service businesses - above which a call counts as a conversion event. This filters out low-quality call data and ensures your bidding signals reflect genuine enquiry intent.