What each customer actually costs

When I set up marketing measurement for a business, I start at the end. What does a real customer look like here, and how would we know one came in? The number I'm after in the end is cost per customer by source.

That question changes how the tracking gets built, because most reporting is designed around the other end. Somebody fills out a form or calls, and that gets counted as a lead. Cost per lead goes into the monthly deck, and the budget drifts toward whatever looks cheapest.

Why the lead is the wrong finish line

Ad platforms optimize toward whatever conversion you tell them matters. If that conversion is a form fill, they'll get very good at finding people who fill out forms.

Those aren't always the people who become customers. Plenty are just shopping around or don't qualify for what you offer. The platform can't tell any of that apart unless you show it, so it keeps sending more of whatever is cheapest to generate. So a campaign can top the report and still bring in very little business.

Keep the source attached

I've written about the mechanics before. Following one click from ad to CRM covers keeping the source on the record, and attribution when the sale happens off the website covers the stages and sending results back to the ad platforms. The short version is that the source has to ride along with the lead all the way to the sale, and the platforms need to hear which leads became customers.

The number leadership should watch

The report I want in front of leadership every month is cost per customer by source. Cost per lead can sit next to it, but it shouldn't be the headline.

The two often rank sources differently. A source with expensive leads can turn out to be the cheapest way to win customers, and a source with cheap leads can turn out to be mostly noise. That's the conversation leadership should be having about budget.

I also want the report to show how long each source takes to turn a lead into a customer. Some channels close fast and some take months. If you judge a slow channel on this month's customers alone, you can end up cutting it right before it pays off.

Marketing and intake on the same scoreboard

This also changes how teams inside the company work together.

When marketing is measured on leads and intake or sales is measured on closed business, the two teams usually end up arguing. Marketing says the leads are fine and sales says they're junk. Both are right about their own numbers.

Put both teams on cost per customer and the old arguments about lead quality get a lot shorter. Marketing starts paying attention to what happens after the form, since that's what they're judged on now. Sales gets a reason to care where leads come from, because some sources are much easier to close than others.

Start with one source for a month

You don't need to rebuild everything at once. Pick one source, usually the one you spend the most on, and follow it all the way through for a month. Capture the source on the form, make sure it lands in a real field, agree on what counts as a customer, and match each new customer back to where they came from.

A month of that should tell you whether the budget is pointed in the right direction. Then build out one source at a time until leadership has a cost per customer it trusts.