Flex monetizes financial flows
Flex
Flex is building less like a SaaS tool and more like a modern regional bank wrapped in software. The free dashboard matters because it pulls a business’s card spend, bill pay, bank balances, FX, and accounting sync into one place, then monetizes each payment, deposit, and borrowing event. That model works especially well for owner operated companies with heavy vendor spend and cash flow gaps, where Net-60 float and fast underwriting are more valuable than generic finance software.
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The money comes from movement, not seats. Flex makes revenue on card interchange, a 4% fee when bills are paid by card, 1% FX on cross border payments, deposit economics, and Flex Elite. By December 2025 it had scaled to about $3B in annualized payment volume and about $75M in annualized revenue.
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This is a different customer and sales motion than Ramp or Mercury. Flex targets profitable businesses in construction, logistics, trucking, and services, often in middle America, and acquires them city by city through referrals and relationship driven onboarding. That supports $20K to $30K of annual revenue per account without heavy digital spend.
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The deeper advantage is the credit book. Flex funds its own Net-60 float and working capital products with more than $300M of debt capacity, so it captures underwriting economics instead of just software fees. A close parallel is Kapital in LatAm, which also used banking software as the entry point to layer on lending and treasury products.
The next step is for platforms like Flex to push further from payments into credit and owner treasury. As more transaction history, invoices, and repayment behavior run through one system, the software becomes the distribution layer and the real value shifts to underwriting, pricing risk, and owning a larger share of each customer’s financial workflow.