Eligibility AI
Eligibility AI
AI-Powered HSA/FSA Product Eligibility, Made Simple
AI-Powered HSA/FSA Product Eligibility, Made Simple
AI-Powered HSA/FSA Product Eligibility, Made Simple
Flex’s Eligibility AI automatically classifies products by HSA/FSA eligibility—helping merchants launch faster and stay compliant.
Flex’s Eligibility AI automatically classifies products by HSA/FSA eligibility—helping merchants launch faster and stay compliant.
Flex’s Eligibility AI automatically classifies products by HSA/FSA eligibility—helping merchants launch faster and stay compliant.














Conversion Lift
+30%
More shoppers complete checkout with HSA/FSA
Conversion Lift
+30%
More shoppers complete checkout with HSA/FSA
Conversion Lift
+30%
More shoppers complete checkout with HSA/FSA
Conversion Lift
+30%
More shoppers complete checkout with HSA/FSA
AOV LIFT
+50%
Customers spend more using health benefit funds
AOV LIFT
+50%
Customers spend more using health benefit funds
AOV LIFT
+50%
Customers spend more using health benefit funds
AOV LIFT
+50%
Customers spend more using health benefit funds
Fewer Returns
-10%
Fewer returns when buyers use pre-tax dollars
Fewer Returns
-10%
Fewer returns when buyers use pre-tax dollars
Fewer Returns
-10%
Fewer returns when buyers use pre-tax dollars
Fewer Returns
-10%
Fewer returns when buyers use pre-tax dollars
Repeat Buyers
+92%
Of surveyed customers said they'll return because of HSA/FSA
Repeat Buyers
+92%
Of surveyed customers said they'll return because of HSA/FSA
Repeat Buyers
+92%
Of surveyed customers said they'll return because of HSA/FSA
Repeat Buyers
+92%
Of surveyed customers said they'll return because of HSA/FSA
Benefits
Benefits
AI-powered HSA/FSA eligibility management with Flex
Accelerate onboarding
Identify eligible products in seconds to start selling faster.
Accelerate onboarding
Identify eligible products in seconds to start selling faster.
Accelerate onboarding
Identify eligible products in seconds to start selling faster.
Remove guesswork
Trained on IRS rules & flex data so you know exactly which products qualify, reducing confusion.
Remove guesswork
Trained on IRS rules & flex data so you know exactly which products qualify, reducing confusion.
Remove guesswork
Trained on IRS rules & flex data so you know exactly which products qualify, reducing confusion.
Expand catalogs
Unlock new opportunities to sell dual-purpose products with HSA/FSA.
Expand catalogs
Unlock new opportunities to sell dual-purpose products with HSA/FSA.
Expand catalogs
Unlock new opportunities to sell dual-purpose products with HSA/FSA.
Stay compliant
Keep eligibility aligned with IRS guidelines automatically.
Stay compliant
Keep eligibility aligned with IRS guidelines automatically.
Stay compliant
Keep eligibility aligned with IRS guidelines automatically.
How it works
How it works
HSA/FSA Payments with flex
Step 1

Enter your Website URL
Step 2

We scrape the products on your website, and categorize them using our AI model trained on IRS guidance and Flex data
Step 3

We return a clean list of your products and eligibility
Step 1

Enter your Website URL
Step 2

We scrape the products on your website, and categorize them using our AI model trained on IRS guidance and Flex data
Step 3

We return a clean list of your products and eligibility
Step 1

Enter your Website URL
Step 2

We scrape the products on your website, and categorize them using our AI model trained on IRS guidance and Flex data
Step 3

We return a clean list of your products and eligibility
Testimonials
Testimonials
Why brands love Flex
“The integration was smooth from start to finish. The Flex team was incredibly responsive and supportive, and their marketing guides helped us optimize the experience from day one.”

Emillee Simon
Senior Manager of E-Commerce, Kindred Bravely
“The integration was smooth from start to finish. The Flex team was incredibly responsive and supportive, and their marketing guides helped us optimize the experience from day one.”

Emillee Simon
Senior Manager of E-Commerce, Kindred Bravely
“The integration was smooth from start to finish. The Flex team was incredibly responsive and supportive, and their marketing guides helped us optimize the experience from day one.”

Emillee Simon
Senior Manager of E-Commerce, Kindred Bravely
"Setup was quick and painless. Giving customers another option, especially given our higher average order value, makes our product more accessible to people who might not otherwise have had the funds to buy."

Alex Burcham
Marketing Manager, Chilipad
"Setup was quick and painless. Giving customers another option, especially given our higher average order value, makes our product more accessible to people who might not otherwise have had the funds to buy."

Alex Burcham
Marketing Manager, Chilipad
"Setup was quick and painless. Giving customers another option, especially given our higher average order value, makes our product more accessible to people who might not otherwise have had the funds to buy."

Alex Burcham
Marketing Manager, Chilipad
“The marketing materials Flex provided were phenomenal. We used their landing page and email examples as inspiration, layered in our branding, and saw campaigns perform better than almost anything else.”

Paige Smith
Head of Brand Marketing, AMMD by Amy Myers MD
“The marketing materials Flex provided were phenomenal. We used their landing page and email examples as inspiration, layered in our branding, and saw campaigns perform better than almost anything else.”

Paige Smith
Head of Brand Marketing, AMMD by Amy Myers MD
“The marketing materials Flex provided were phenomenal. We used their landing page and email examples as inspiration, layered in our branding, and saw campaigns perform better than almost anything else.”

Paige Smith
Head of Brand Marketing, AMMD by Amy Myers MD
“Absolutely, I’d recommend Flex. It’s a user-friendly platform backed by an amazing, knowledgeable team. They make a complex process — both technically and financially — feel easy. And the results speak for themselves.”

Harry Yu
Senior Brand & Partnerships Manager, Airdog
“Absolutely, I’d recommend Flex. It’s a user-friendly platform backed by an amazing, knowledgeable team. They make a complex process — both technically and financially — feel easy. And the results speak for themselves.”

Harry Yu
Senior Brand & Partnerships Manager, Airdog
“Absolutely, I’d recommend Flex. It’s a user-friendly platform backed by an amazing, knowledgeable team. They make a complex process — both technically and financially — feel easy. And the results speak for themselves.”

Harry Yu
Senior Brand & Partnerships Manager, Airdog
"The Flex integration through RevenueCat made it simple for Ladder to offer subscriptions via HSA and FSA cards — a major unlock for our users and an effective new growth lever. "

Ryan Mott
VP of Data Product at Ladder
"The Flex integration through RevenueCat made it simple for Ladder to offer subscriptions via HSA and FSA cards — a major unlock for our users and an effective new growth lever. "

Ryan Mott
VP of Data Product at Ladder
"The Flex integration through RevenueCat made it simple for Ladder to offer subscriptions via HSA and FSA cards — a major unlock for our users and an effective new growth lever. "

Ryan Mott
VP of Data Product at Ladder
“The integration was smooth from start to finish. The Flex team was incredibly responsive and supportive, and their marketing guides helped us optimize the experience from day one.”

Emillee Simon
Senior Manager of E-Commerce, Kindred Bravely
"Setup was quick and painless. Giving customers another option, especially given our higher average order value, makes our product more accessible to people who might not otherwise have had the funds to buy."

Alex Burcham
Marketing Manager, Chilipad
“The marketing materials Flex provided were phenomenal. We used their landing page and email examples as inspiration, layered in our branding, and saw campaigns perform better than almost anything else.”

Paige Smith
Head of Brand Marketing, AMMD by Amy Myers MD
“Absolutely, I’d recommend Flex. It’s a user-friendly platform backed by an amazing, knowledgeable team. They make a complex process — both technically and financially — feel easy. And the results speak for themselves.”

Harry Yu
Senior Brand & Partnerships Manager, Airdog
"The Flex integration through RevenueCat made it simple for Ladder to offer subscriptions via HSA and FSA cards — a major unlock for our users and an effective new growth lever. "

Ryan Mott
VP of Data Product at Ladder