What is call tracking?
Call tracking software links an inbound phone call back to the advertising that produced it. Each marketing source gets its own phone number, calls forward through to your normal line, and the platform reports which advert made the phone ring. Everything below explains how that works in practice, and when it is worth paying for.
Last updated: 8 September 2026
Why the phone is the hole in most advertising reports
Web analytics measures what happens on the website. The moment somebody picks up a phone, the trail stops. For a business that sells online that barely matters. For a solicitor, a clinic or a garage, it means the most valuable enquiries — the ones worth the most money, from the people most ready to buy — are the exact ones the reporting cannot see.
So the budget gets spent on the campaigns that produce measurable form fills, and the campaigns that produce phone calls get cut for underperforming. They were never underperforming. They were just invisible.
What good call tracking gives you beyond attribution
Attribution is the starting point, not the finish. Once a call is recorded and transcribed, the same data answers questions attribution never could: whether the enquiry was real business or a supplier chasing an invoice, whether your team asked for the appointment, whether anyone took an email address, and how quickly the call was answered in the first place.
That last one tends to be the expensive discovery. Harvard Business Review’s widely cited study of lead response, published in 2011, found that firms contacting a lead within an hour were roughly seven times more likely to have a meaningful qualifying conversation than those waiting even two hours. Call tracking is how you find out which side of that line your business is actually on.
Common questions
What is call tracking software and how does it work?
Call tracking software links an inbound phone call back to the advertising that produced it. It works by assigning a dedicated phone number to a marketing source — a Google Ads campaign, a Facebook ad, a printed flyer — and forwarding calls to that number straight through to your normal phone line. Because each source has its own number, the system knows which one the caller dialled, and can therefore report which advert made the phone ring.
Nothing changes for the caller. They dial a number, your team answers on the handsets they already use, and the conversation is identical. The tracking sits entirely in the routing layer between the two.
What is the difference between static and dynamic number insertion?
Static number insertion gives one fixed tracking number to one channel — for example, a single number printed on a leaflet, or one used only in your Bing ads. Dynamic number insertion (DNI) instead swaps the number shown on your website automatically, based on how each individual visitor arrived. Two people can be reading the same page at the same moment and see different numbers.
The practical difference is granularity. Static numbers tell you a channel worked. DNI tells you which keyword, campaign or ad group worked, because the swap happens per visit and carries the visitor’s referral data with it. Static is enough for offline media; DNI is what you need if you are bidding on keywords and want to know which ones produce calls.
How does call tracking software attribute phone calls to marketing campaigns?
Call tracking software attributes calls by matching the number dialled to the visitor session that displayed it. When someone lands on your site from an advert, the tracking script reads the referral data — the campaign, the keyword, the click identifier — and shows that visitor a number reserved from a pool. If they ring it, the platform looks up which session held that number and attaches the full campaign detail to the call record.
That record is what makes the reporting useful. A tracked call arrives carrying the campaign, the keyword and the landing page, so a call can be measured the same way a form submission is. Push it into a CRM and mark the resulting deal as won, and the revenue can be traced back to the click that started it.
Is call tracking worth it for small UK businesses?
Call tracking is worth it for a small UK business when the phone is how you actually sell and you are paying for the traffic that produces those calls. Solicitors, dentists, garages, trades, clinics and estate agents fit that description: the enquiry arrives by phone, the value per case is high, and the advertising spend is significant enough that guessing which half works is expensive.
It is harder to justify if you take very few calls, if your enquiries arrive almost entirely by form or email, or if you do not advertise at all. In that case the attribution question you are paying to answer barely exists.
What does call tracking software cost in the UK?
UK call tracking is usually priced in one of two ways: a monthly platform fee with tracking numbers and call minutes bundled in, or a lower base fee with numbers and per-minute charges billed on top. The second model looks cheaper on the pricing page and often is not, because a busy month of long calls is exactly when the bill grows.
CallTrace is £99 per month for Call Intelligence — tracking numbers, recording, transcription, AI scoring, sales coaching and CRM delivery — and £199 per month for the Live Coach tier, which adds real-time on-screen coaching during calls. Both are monthly rolling with no lock-in. Note that many long-standing platforms in this category are American and price in dollars, so the amount you actually pay moves with the exchange rate.
The quickest way to understand call tracking is to be on the receiving end of it. Put your number in on the homepage and CallTrace rings you back in seconds — that call is tracked, transcribed and scored by the product itself.
Ring my phone →See every featureMohammed Kazi is Commercial Director at Zayn Productions Ltd, the UK company behind CallTrace. He has spent over thirty years in sales leadership and commercial management across SaaS, legal services, hospitality and retail, including contact-centre and team leadership. He runs the advertising and phone-based intake that CallTrace was built to measure.