Flex logo
YC S23

Flex

Stripe for HSA/FSA payments

About

Flex is a payment platform for businesses to accept HSA/FSA, unlocking the $150B per year sitting in HSA/FSA accounts.

Founders

Family Office Investors

Altss tracks family office allocations to YC-backed companies. Request access to see which family offices have invested in Flex.

See family office activity

Industry & Focus

FintechPaymentsMarketplaceHealth & Wellness