← Embedded Finance Index 2026

Flexbase (flex)

“Can a construction-turned-fintech startup become the AI-native financial OS that unifies business and personal finances for mid-market entrepreneurs?”

Founded2019
HQMiami, FL
FoundersZaid Rahman
Total raised$105M+ (equity) + $200M credit facility
Latest roundSeries B, 2025
Valuation~$250M post-money (Series B context, 2025)
IndustryFintech / SMB banking
The story

Founded in 2019 as Flexbase Technologies, a construction-industry platform automating AIA billing and connecting contractors to lenders. By 2022, CEO Zaid Rahman pivoted the business toward a broader fintech model targeting business owners, shedding the construction-specific label. Launched in stealth as a business credit card + expense management tool in 2023, then expanded aggressively into business banking (Thread Bank), revenue-based lending (Flex Capital), AP automation, and global payments — positioning as an 'AI-native all-in-one finance platform for entrepreneurs' competing with Brex and Ramp.

Last 12 months
2025-03
2025
2026
Product timeline
2019
Company founded, initially operating as Flexbase Technologies focused on construction industry payments and AIA billing automation.· pivot
2022
Pivoted from construction platform to fintech for business owners, rebranded trajectory toward finance platform under CEO Zaid Rahman.· pivot
2023
Emerged from stealth with a business credit card (Net-60) and expense tracking product; raised $20M Series A led by MS&AD Ventures.· card
2025
Raised $25M equity at ~$250M valuation and secured $200M credit facility; launched full-stack banking, AP automation, global payments, and Flex Capital (revenue-based financing).· banking
2025
Raised $60M Series B to scale AI-native finance platform; repositioned as 'AI-Native Finance Platform for Business Owners'.· banking
The stack
6 layers disclosed in Flexbase (flex)’s embedded-finance stack
Money movement
ACHWire
Banking / BaaS
in the full report
Card issuing
in the full report
Lending
in the full report
Sponsor bank
in the full report
Accounting
in the full report
Accounting gap: minor
12 more providers across 5 layers, with confidence-scored evidence and source URLs, are in the Embedded Finance Index report.