The Case Against Last-Touch Attribution

Last-touch attribution is the default in most CRMs because it is the simplest to compute. It is also the most misleading. It assigns credit to whichever channel touched the deal most recently, ignoring everything that brought the buyer to that touch. In B2B, where deals take months and involve dozens of touches, last-touch is structurally wrong.

The two channels most distorted by last-touch attribution are paid search (which catches buyers at the moment of intent, regardless of who built the intent) and email nurture (which always touches before form fill). Both look like heroes. Brand, content, podcasts, events, PR, and analyst relations all look like cost centers. The paid search budget grows. The brand budget shrinks. The pipeline shrinks two years later.

The fix is to never use last-touch as the primary attribution view. Use it as one input alongside first-touch, multi-touch, and self-reported attribution (always ask in the demo form: 'how did you hear about us'). The convergence of those four sources is closer to the truth than any single model.

If the only attribution view your team has access to is last-touch, that is a data problem worth solving immediately. HubSpot and Salesforce both support multi-touch attribution natively. Bizible and Dreamdata are worth the cost above 20M ARR. Until you have multi-touch visibility, every channel ROI argument you make is half-blind.