“Can a small-team B2B payout infrastructure provider capture recurring revenue from ISVs and platforms that need white-label mass disbursement capabilities without building their own rails?”
Founded in 2018 as ePayRails, the company initially targeted B2B payments and receivables automation for SMBs. It rebranded to Fintainium and broadened its platform to include embedded payments, mass disbursements, cash-flow management, and lending. The company has since repositioned as a white-label payout infrastructure provider targeting ISVs, payment facilitators, and bank treasury desks — essentially selling payout-as-a-service rather than a standalone fintech app. Its partnership with Visa Direct underpins its branded 'RapidPay' push-to-card rail.
Fintainium discloses Cross River Bank, N.A. as its banking provider, with Synovus Bank as its sponsor bank, according to the Embedded Finance Index 2026.
Fintainium does not disclose a bank charter of its own; its banking services are provided through Synovus Bank.
Fintainium moves money over ACH, Visa Direct and Push-to-card.
The Embedded Finance Index 2026 maps 4 layers in Fintainium's stack: Money movement (ACH, Visa Direct and Push-to-card); Banking / BaaS (Cross River Bank, N.A.); Lending (Embedded lending (described in platform overview)); Sponsor bank (Synovus Bank).
Fintainium is founded in 2018 and headquartered in Jacksonville, Florida, United States.
Fintainium has raised $13.72M in total (latest round: Later Stage VC, ~2025-2026).
Get a read on where your own stack stands against Fintainium and the rest of its category — what they built versus bought, which providers they use, and where the gaps in your own strategy and competitive set actually are.