Flex Secures $60M Series B to Revolutionize Mid-Market Finance with AI and Private Credit Innovation
December 4, 2025
Flex views its private credit engine and AI-driven motherboard of financial intelligence as core differentiators, with a 60-day float on its Business Credit Card as a wedge product to drive platform adoption.
Funds will accelerate product development and scale the team to about 80 employees to attract more clients.
Flex targets high-net-worth, middle-market business owners generating $3 million to $100 million in revenue, offering an integrated five-pillar platform that combines private credit, business finance, personal finance, payment solutions, and an ERP for mid-market firms.
Flex announced a $60 million Series B led by Portage, bringing total equity raised to $105 million as investor confidence grows in unifying financial infrastructure for mid-market owners.
Executives say the AI layer enables faster product updates, compliance checks, and customer support, while a private credit arm uses agentic underwriting to price risk and keep lending in-house.
Portage led the funding round, underscoring the consortium's support for Flex’s strategy.
The round includes participation from CrossLink Capital, Spice Expedition, Titanium Ventures, Wellington, Companyon Ventures, Florida Funders, FirstLook Partners, Tusk Venture Partners, and others.
Covington & Burling LLP served as external counsel for the transaction.
Additional sponsor and media content surrounds the article but does not alter the central funding news.
Flex expects its data flywheel—driven by customers using more Flex services—to strengthen competitive differentiation and deter copying.
The round includes investments from notable backers such as CrossLink Capital, Spice Expedition, Titanium Ventures, Wellington, Companyon Ventures, Florida Funders, FirstLook Partners, and Tusk Venture Partners.
Despite strong AI funding, adoption concerns persist, but Flex mitigates this by having financial experts review AI outputs.
Summary based on 10 sources
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Sources

Yahoo Finance • Dec 4, 2025
AI startup Flex raises $60 million to offer finance tools for mid-sized businesses
The Manila Times • Dec 4, 2025
Flex raises $60M Series B equity round to scale its AI native 'private bank” for high-net-worth business owners
