OatFi raises $24m to transform financing in B2B payments ecosystem

June 3, 2025

OatFi, a FinTech company building embedded credit infrastructure for B2B payments, has raised $24m in a Series A funding round.

The investment was led by White Star Capital, with continued participation from existing backers Portage and QED.

OatFi provides API-first infrastructure designed to embed underwriting, origination, and funding capabilities directly into B2B payment workflows. Its technology integrates within Accounts Payable (AP), Accounts Receivable (AR), and commercial charge card systems, enabling payment platforms to offer built-in financing at the point of transaction.

With the new capital, OatFi plans to ramp up product development and expand its integrations across AP, AR, and payment infrastructure providers. The company aims to build a modern credit network capable of supporting the $35tn annual B2B payments market in the US.

The company has already partnered with major infrastructure providers such as Unit, Transcard, and Galileo, and has integrated with more than 25 platforms over the past three years. OatFi’s core mission is to address the cash flow friction in B2B commerce, where suppliers typically seek rapid payments while buyers often aim to extend terms.

By embedding a real-time credit layer through its API, OatFi allows both buyers and suppliers to transact without compromising working capital. This integration helps businesses align cash flow needs without relying on outdated systems or requiring suppliers to act as lenders.

OatFi CEO Michael Barbosa said, “B2B payments are not just a money movement challenge—they’re a data and workflow challenge. That’s why we’ve focused on deep API integrations that offer working capital solutions within the platforms that businesses already rely on to pay and get paid.”

White Star Capital general partner Eddie Lee added, “OatFi isn’t a ‘cherry on top’ for B2B payment companies looking to unlock a new revenue stream.

“It delivers a table-stakes product that enables trusted B2B transactions in a world moving rapidly online. First-generation fintech lenders offering MCA products helped support merchants serving consumers. OatFi is helping platforms facilitate commerce between businesses, where the stakes—and the volumes—are even higher.”