How do I track which marketing actually drives revenue?

The tracking that has to exist

UTM tags on every paid link, formatted the same way every time. Decide the naming convention once and write it down, because three people inventing their own tags produces data nobody can group later.

Capture the source into a hidden field on every form, and push it into the CRM with the lead. Most companies skip this. It is also the step that matters most, because a lead sitting in your CRM with no source attached is untraceable forever, no matter how good your analytics happen to be.

Then make sure the CRM records the outcome. Won, lost, value, date. Without the outcome you can measure leads and nothing else, and leads are exactly the metric that misleads you when one channel produces volume and another produces actual buyers.

For phone-heavy businesses, use call tracking numbers by channel. Property developers and hotels lose most of their attribution right here, because the important conversations happen on the phone and nobody logs where the caller came from.

Where attribution stops working

It cannot see influence. Someone who saw a hoarding on Golf Course Road, heard your name from a colleague, then searched your brand and converted will be logged as organic brand search. Organic did not create that demand. It collected it.

It also cannot handle long, multi-device journeys, which describes most property and considered purchases. The buyer researched on a phone in March and enquired on a laptop in July.

So add a post-purchase or post-enquiry question. Where did you first hear about us? One field, self-reported, imperfect, and consistently more revealing about awareness channels than any pixel you can fire.

The only real proof

Turn things off. Pause a channel for two full weeks and watch your total revenue, not that channel’s reported revenue, or run a geo-split where you can, spending in Delhi NCR while holding back in a comparable market, and then compare the two honestly.

This is uncomfortable, and most companies never do it. It is also the only method that separates a channel creating demand from one merely harvesting demand that already existed, and the difference between those two is usually where the budget is quietly being wasted.