How to Measure Marketing ROI When You Sell B2B

In B2B the buyer researches for weeks, calls from a mobile, forwards a page to a colleague and orders three months later through a purchasing contact. No dashboard handles that cleanly.

Start where the money is: the customer record

Attribution begins in the CRM, not in the ad platform. Every new opportunity should carry a source, captured at the point of first contact, even if it is only a dropdown that somebody fills in during the first call.

The four numbers that matter

1. 01Marketing spend in the period, including agency and internal time.
2. 02Qualified opportunities created, by source.
3. 03Customers won from those opportunities.
4. 04Gross profit from those customers, over their expected lifetime.

Divide gross profit by spend and you have a return. It will not be precise. It will be directionally correct, which is all a budget decision requires.

Allow for the sales cycle

If your average cycle is four months, judging this month's spend against this month's orders will always understate performance. Compare cohorts: leads generated in a quarter, measured for revenue two quarters later.

Track calls as seriously as forms

In most trade and industrial sectors the majority of good enquiries arrive by phone. Call tracking that attributes those to a campaign frequently doubles the measured return of paid search overnight — the return was always there, it just wasn't visible.

Judge channels on customers, not clicks

Impressions, clicks and cost per lead are diagnostics. The decision — spend more here, less there — should only ever be made on the cost and quality of customers acquired.