We are thrilled to announce that OneNext has raised a $5.5 million Seed Round led by Citi Ventures, the strategic venture arm of Citigroup. This investment marks a significant milestone in our mission to build next-generation financial infrastructure for modern businesses.

Why This Funding Matters

The B2B payments and financial infrastructure market is at an inflection point. Businesses of all sizes are demanding the kind of sophisticated financial tooling that was once only available to the largest enterprises. At OneNext, we have been building toward this moment since our founding in 2023 — and this seed funding accelerates everything.

The $5.5 million will be deployed across three key areas: engineering and product development, regulatory infrastructure and compliance, and go-to-market expansion. We are doubling our engineering team, adding dedicated compliance specialists, and expanding our sales presence in New York, Chicago, and Austin.

Why Citi Ventures

We chose Citi Ventures as our lead investor for reasons that go beyond the check size. Citi Ventures brings deep financial services expertise, a global network of institutional relationships, and a track record of backing fintech companies that go on to redefine their markets. Their portfolio includes some of the most important B2B fintech companies of the last decade.

"We see OneNext as building critical infrastructure for the next generation of financial services," said a partner at Citi Ventures. "Their unified API approach solves a real pain point for businesses that are trying to modernize their financial operations without stitching together dozens of point solutions."

What We Are Building

OneNext is building the financial infrastructure layer that enables modern B2B companies to move money efficiently, maintain compliance automatically, and deliver embedded financial experiences to their own customers. Our platform includes:

  • Real-time payment rails supporting RTP, FedNow, ACH, and wire transfers
  • Open Banking APIs connected to over 12,000 financial institutions
  • Automated KYB/KYC, AML screening, and transaction monitoring
  • Treasury management with real-time cash visibility and yield optimization
  • Banking-as-a-Service infrastructure for embedded finance products

The Market Opportunity

B2B payments represent a $120 trillion annual market globally, yet the infrastructure supporting these payments is fragmented, slow, and expensive. Most businesses still rely on batch processing, manual reconciliation, and siloed point solutions. OneNext unifies all of this into a single platform, enabling real-time settlement, automated compliance, and seamless integration with existing ERP and accounting systems.

The regulatory environment is also creating urgency. Open banking mandates, real-time payment network expansions, and tightening AML/KYC requirements are forcing businesses to upgrade their financial infrastructure sooner than they planned. OneNext helps them get there faster and at lower cost than building in-house.

What Is Next

With this seed funding secured, we are executing against a clear roadmap. In the next twelve months, we will launch our international payment corridors starting with Canada and the UK, release our embedded lending API in partnership with regulated bank partners, and grow to 50+ enterprise customers.

We are also opening up our developer waitlist for teams who want early access to our newest APIs. If you are building a B2B fintech product, a marketplace, or a SaaS platform with financial components, we want to talk to you.

Thank you to our incredible team, our early design partners, and everyone who believed in us from the start. This is just the beginning.

— Jonathan Fudem, CEO & Co-Founder, OneNext