Field notes
Your attribution tracks one contact. The decision had eleven.
The average B2B buying committee is eleven people. Your deal record has one contact on it, and every attribution model you run is splitting credit across that one person's touches.
Gartner puts the average B2B buying committee at eleven stakeholders, Forrester's 2024 research at thirteen. Most deal records carry one contact, usually whoever filled in a form first, and that is often the most junior person in the process. Every attribution model then splits credit across that one person's touches. The fix is structural rather than analytical: associate every stakeholder to the deal, record the role instead of the job title, and make it a stage requirement so it actually happens.
On this page
A deal closes. You open the record to see where it came from, and there is one contact on it, one form fill, one campaign. The report gives that campaign the credit and everyone moves on.
Except the decision was not made by that contact. Gartner puts the average B2B buying committee at eleven people. Forrester's 2024 number is thirteen. For anything above about a hundred thousand in annual contract value you are usually looking at six to ten stakeholders, and in the mid-market it is still three to six.
So the attribution question everyone argues about, first-touch against last-touch, sourced against influenced, is being asked of a record that represents one person out of eleven. The models are not wrong. They are being run on a data structure that cannot hold the thing you are trying to measure.
The deal has one contact and the decision had eleven
Most CRMs let you associate several contacts with a deal. Very few teams actually do it, and the ones that do rarely do it consistently enough to report on, because associating a contact is a manual step that nobody's compensation depends on.
What gets recorded is whoever entered first. That is often the most junior person in the process, because the person who downloads the comparison guide at eleven at night is researching on behalf of somebody more senior who will never fill in a form. The CFO who killed two competing vendors in a meeting you never saw does not appear in the CRM at all.
Run any attribution model over that and it will confidently tell you the comparison guide won the deal.
This is a different problem from the dark funnel
We have written about the dark funnel, which is the touches you cannot see: the Slack thread, the private community, the conversation at a conference. That is a channel problem, and it is real.
This one survives even if you fix that. Say you somehow captured every touch perfectly. You would still be attaching all of it to one contact record and reporting as though that record made the decision. Perfect channel tracking on a single-threaded deal record produces a very precise answer to the wrong question.
What it actually costs you
Single-threaded deals are the ones that fall over when your champion leaves, and attribution built on a single contact hides exactly that risk. A deal with one associated contact and a deal with six look identical in most pipeline reports.
It also distorts what marketing gets funded. Content aimed at practitioners produces form fills, so it attributes. Content aimed at the economic buyer produces a decision, and usually no form fill at all, so it looks like it did nothing. Fund on that signal for a few quarters and you will have optimised your entire programme toward the person who researches rather than the person who signs.
And it breaks the handover. A rep inherits a deal record with one name on it and no map of who else matters, which is the same failure as any handoff nobody owns, arriving one stage later.
What to do about it
Associate contacts to the deal, and make it part of the stage criteria rather than a nice-to-have. A deal cannot move to a proposal stage with one contact attached, because in reality it never does. That single rule surfaces the problem without a new tool.
Record the role, not the job title. Economic buyer, champion, technical evaluator, blocker. Titles vary too much between companies to report on, and the role is what actually predicts whether the deal closes.
Then report engagement at the account level alongside the contact level. Accounts where several roles are genuinely engaged close at a different rate than accounts with one very active contact, and once you can see both numbers next to each other the argument about which campaign gets credit becomes noticeably less interesting.
There is nothing to buy here. What it takes is deciding that the deal record should describe the deal, and then holding the line the first time someone wants to skip the step.
Common questions
What is a B2B buying committee?
A buying committee is the group of people inside a company who collectively decide on a purchase. Gartner puts the average at around eleven stakeholders and Forrester's 2024 research at thirteen, though it varies a lot by deal size: six to ten is common above roughly a hundred thousand in contract value, three to six in the mid-market.
Why does the buying committee break marketing attribution?
Attribution models split credit across the touches recorded against a deal, and most deals have one contact attached. If eleven people influenced the decision and one of them filled in a form, every model in use will credit whatever that one person touched, no matter how well the underlying tracking works.
How is this different from the dark funnel?
The dark funnel is about touches you cannot see, such as private communities or conversations at events. This is about people you can see but do not record. Fixing your channel tracking does not help if every touch still attaches to a single contact on the deal.
How do you track a buying committee in a CRM?
Associate every known stakeholder to the deal rather than leaving one contact on it, record the role each person plays instead of their job title, and make a minimum number of associated contacts part of the criteria for advancing a stage. Then report engagement at account level next to the contact-level view.