How do you validate a B2B marketing agency's ROI claims

How do you validate a B2B marketing agency's ROI claims

Demand three artifacts before you sign: client-specific pipeline attribution with named accounts; the methodology used to assign credit (sourced pipeline, meaning first-touch creation, versus influenced); and references from clients in your revenue band and B2B SaaS sales cycle length. Then validate every number in your own CRM, Salesforce opportunity reports or HubSpot deal stages, not the agency's dashboard, because pipeline coverage and CAC payback have to be defensible to your CFO. Many ranked agency lists, including those on firstpagesage.com and rocktherankings.com, publish ROI percentages without disclosing the math; if they cannot show the math, it is a magic trick, not measurement. We do not buy ROI claims, we audit them, see our guide to structuring agency contracts around pipeline accountability before procurement locks you into a 12-month retainer.