Flex

Flex is a fintech startup based in San Francisco, CA, that focuses on simplifying Health Savings Account (HSA) and Flexible Spending Account (FSA) payments for businesses. The company aims to unlock the significant funds held in these accounts by providing seamless payment processing solutions. Flex is backed by Y Combinator's Summer 2023 cohort and raised a $3.2M Seed round in September 2024. Flex offers a range of services, including a prebuilt checkout for accepting HSA/FSA cards, modular UI components for integrating payments, and compliance automation to manage regulatory requirements. The platform supports various tech stacks, allowing for custom web checkouts and no-code solutions. Additionally, it features an in-checkout application process for products requiring a Letter of Medical Necessity, streamlining the payment experience for users. Flex targets businesses in the healthcare sector, helping them navigate complex payment workflows and compliance challenges.