Fintech Flex Secures $70M Series B1 to Launch AI-Native Private Banking in the UK
By Lauren Towner · 14 July 2026

Quick Summary
Fintech Flex has secured $70 million in Series B1 funding to launch its AI-native private banking platform in the UK. By leveraging stablecoin rails, Flex enables high-net-worth business owners to manage multi-currency operations and cross-border payments in minutes, bridging the gap between personal and corporate finance.
How Does Flex Solve the Private Banking Gap for Business Owners?
Fintech Flex addresses a critical market failure where traditional institutions treat business and personal finances as separate silos. For the 3 million global owners sitting at the center of private economic activity, this fragmentation creates unnecessary friction. Flex integrates these worlds into a single AI-native private banking home, allowing users to manage both spheres through one interface.
- Unified Financial View: Merges business finance, personal finance, and private credit.
- AI-Driven Insights: Uses Beacon AI agents to automate back-office operations.
- High-Net-Worth Focus: Specifically designed for middle-market owners driving 40% of payroll.
What Results Has Flex Delivered for Global Merchants?
The platform has seen explosive growth, crossing $10 billion in annualized TPV while maintaining a nine-figure revenue run rate. By utilizing stablecoin payment rails, Flex makes global money movement invisible and instantaneous, removing the typical 3-5 day wait for international settlements. This efficiency has led to a 3x revenue increase in just six months.
- Global Reach: Wallets and payment rails active in 100+ countries.
- Currency Support: Multi-currency accounts supporting 32 different currencies.
- Product Depth: Average customers now utilize four or more products simultaneously.
How Will the $70M Series B1 Funding Be Utilized?
Led by Halo Fund, this capital injection will facilitate the immediate launch of Flex Global in the UK and beyond. The company plans to double its team from 110 to over 200 employees by the end of 2026. This expansion focuses on scaling private credit solutions in 20+ countries and enhancing their agentic finance operating system for multinational businesses.
- Valuation Surge: Company valuation has doubled to $1.2 billion.
- Strategic Partnerships: Leveraging Halo Fund’s ties to NBA and Formula 1 for distribution.
- Product Roadmap: Future expansion into mortgages and travel rewards.
FF NEWS TAKE:
Flex is proving that AI-native private banking isn't just a buzzword; it's a structural necessity for the modern entrepreneur. By embedding stablecoin rails so deeply that they become "invisible," Flex is effectively bypassing the legacy SWIFT system to offer a speed that traditional private banks cannot match. This $70M round and $1.2B valuation signal that the market is ready for a unified financial stack that treats the business owner as a single, global entity.
Companies in this story: Wellington, 53 Stations, Spice, Accel, Flex, Florida Funders, Portage Ventures, Crosslink Capital, Halo Fund, Titanium Ventures
People in this story: Ryan Sweeney, Ryan Smith, Zaid Rahman