GrailPay raises $10.5M Series A to build the trust layer for instant B2B payments
What's the deal? GrailPayDealroom has a profile for this one. Try Dealroom →, a New York-based fintech building risk-detection tools for business payments, has raised $10.5 million in Series A funding.
MissionOGDealroom has a profile for this one. Try Dealroom → led the round, with participation from EJF VenturesDealroom has a profile for this one. Try Dealroom →, Counterpart VenturesDealroom has a profile for this one. Try Dealroom →, Eleanor Park Ventures, Construct CapitalDealroom has a profile for this one. Try Dealroom →, Commerce Ventures, and SSC Venture PartnersDealroom has a profile for this one. Try Dealroom →.
The financing brings GrailPay's total funding to $17.2 million and marks a step-up in valuation from its June 2025 seed round, according to co-founder and chief executive officer Will Messina.
Why now? Business payments are shifting toward instant settlements and AI-powered software, raising the stakes for fraud.
Traditional bank transfers take days to clear, giving firms time to catch errors or fraud. Instant payments remove that cushion: once money leaves, it is gone.
Messina started GrailPay as a consumer app, then pivoted to B2B after spotting a bigger problem. Businesses still rely on wires, paper checks, and Automated Clearing House (ACH) transfers — systems prone to failure and fraud.
The rise of sophisticated AI phishing has made verifying who sits on the other side of a transaction even harder.
What could go wrong? GrailPay's core product, Account Intelligence, verifies account ownership, checks payment history, and assesses risk before funds move.
That assessment runs entirely on proprietary in-house machine learning models. Messina noted that large enterprise clients are wary of letting commercial large language models (LLMs) touch sensitive customer data, since companies cannot easily control where it goes.
The signal: Backed by lead investor MissionOG and a syndicate that spans EJF Ventures, Counterpart Ventures, and Construct Capital, GrailPay has more than doubled its total funding to $17.2 million since its June 2025 seed round. The early-stage fintech's pitch — that fraud detection must catch up as instant settlement strips away the days businesses once had to reverse a bad transfer — is what convinced this group to mark up its valuation.
Read more: This Week in Fintech
