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Flex HSA/FSA Payments

By Flex·
This is the official plugin for accepting payments via the Flex payment gateway on a WooCommerce store.
Version
3.1.16
Active installations
10
Last updated
Nov 19, 2025
Flex HSA/FSA Payments

Flex integrates with WooCommerce to enable merchants to accept Health Savings Account (HSA) and Flexible Spending Account (FSA) payments. Our plugin helps you tap into the growing $150 billion HSA/FSA market and makes it easy to offer compliant, seamless payment options to your customers.

Features:

  • Accept HSA/FSA payments directly in your WooCommerce checkout flow
  • Product sync and eligibility assistance
  • IIAS support for products deemed “always eligible”
  • Letter of Medical Necessity (LOMN) directly in checkout for products deemed “dual use”

Flex partners have seen:

  • 20% increase in average order volume
  • 17% increase in revenue
  • Access to a $150 billion and growing HSA/FSA market

How to Get Started:

Visit withflex.com to learn more or contact us at hello@withflex.com to get started.

Freeon Business plan
Tested up to
WordPress 6.8.3
This plugin is available for download for your site.