Attract new customers, grow your cart size, and increase conversion by accepting HSA/FSA payments.
GROWING MARKET
$150b
Dollars in HSA/FSAs to be spent on health-related purchases.
GROWING MARKET
$150b
Dollars in HSA/FSAs to be spent on health-related purchases.
GROWING MARKET
$150b
Dollars in HSA/FSAs to be spent on health-related purchases.
REPEAT CUSTOMERS
92%
Of surveyed customers said they'll return because HSA/FSA is accepted.
REPEAT CUSTOMERS
92%
Of surveyed customers said they'll return because HSA/FSA is accepted.
REPEAT CUSTOMERS
92%
Of surveyed customers said they'll return because HSA/FSA is accepted.
LARGER CART SIZE
+20%
Customers spend more when using HSA/FSA cards.
CUSTOMERS SAVE
30%
On average customers save 30% by using their HSA/FSA funds.
Trusted by top consumer brands
Trusted by top consumer brands
MEET FLEX
MEET FLEX
MEET FLEX
Flex is the holistic solution for accepting HSA/FSA
Flex is the holistic solution for accepting HSA/FSA
Flex is the holistic solution for accepting HSA/FSA
We work with our partners to navigate the regulatory and compliance landscape, implement the best solution for their needs, and help drive revenue by accepting HSA/FSA funds.
We work with our partners to navigate the regulatory and compliance landscape, implement the best solution for their needs, and help drive revenue by accepting HSA/FSA funds.
We work with our partners to navigate the regulatory and compliance landscape, implement the best solution for their needs, and help drive revenue by accepting HSA/FSA funds.
GROW YOUR BUSINESS BY ACCEPTING HSA/FSA
GROW YOUR BUSINESS BY ACCEPTING HSA/FSA
GROW YOUR BUSINESS BY ACCEPTING HSA/FSA
Why accept HSA/FSA?
Why accept HSA/FSA?
Why accept HSA/FSA?
Integrating HSA/FSA payments with Flex helps you reach a broader audience, boost average order values, and meet consumer demand, all while driving revenue through our marketplace and promotions.
Integrating HSA/FSA payments with Flex helps you reach a broader audience, boost average order values, and meet consumer demand, all while driving revenue through our marketplace and promotions.
Integrating HSA/FSA payments with Flex helps you reach a broader audience, boost average order values, and meet consumer demand, all while driving revenue through our marketplace and promotions.
LARGE MARKET DEMAND
Consumers want to pay with HSA/FSA
67% of consumers surveyed said they would not have purchased without an HSA/FSA option.
Will not purchase without HSA/FSA
Will not purchase without HSA/FSA
Will not purchase without HSA/FSA
INCREASE ORDER VALUE
Consumers spend more with HSA/FSA
Consumers save 30% to 40% on purchases they make with their HSA/FSA — which translates to spending: Our customers have found a +20% boost in AOV on HSA or FSA purchases.
$264.32
Average Order Value
20%
Aug
Sep
Oct
Jul
$264.32
Average Order Value
20%
Aug
Sep
Oct
Jul
$264.32
Average Order Value
20%
Aug
Sep
Oct
Jul
EXPANDING CONSUMER BASE
Boost revenue with Flex’s community
We have 10K+ engaged buyers who are looking for places to spend their health funds. Through listings on the Flex Market, social promotion, and newsletter updates, Flex drives new customers to discover your business.
Built for developers
by developers
Flex provides a prebuilt, hosted checkout page or UI building blocks to integrate HSA/FSA payments directly into your existing payments flow.
curl --location 'https://api.withflex.com/v1/checkout/sessions' \ --header 'Authorization: Bearer fsk_eyJhbGciOiJIUzM4NCJ9.eyJ1c2VyX2lkIjoiZmN1c18wMUg5VFNGR01HWjNKUFFGRUEzUTFEV1' \ --data '{ "checkout_session": { "line_items": [ { "price_id": "fprice_01HCZMDBA9HMZ8MZKK1T5A64S5", "quantity": 1 } ], "success_url": "https://withflex.com/success", "mode": "payment" } }'
THE COMPREHENSIVE SOLUTION
THE COMPREHENSIVE SOLUTION
THE COMPREHENSIVE SOLUTION
Seamlessly integrate HSA/FSA with Flex
Seamlessly integrate HSA/FSA with Flex
Seamlessly integrate HSA/FSA with Flex
Flex fits any tech stack, from custom checkouts to no-code solutions, ensuring quick setup and regulatory compliance, with personalized support to meet your business needs.
Flex fits any tech stack, from custom checkouts to no-code solutions, ensuring quick setup and regulatory compliance, with personalized support to meet your business needs.
Flex fits any tech stack, from custom checkouts to no-code solutions, ensuring quick setup and regulatory compliance, with personalized support to meet your business needs.
Flex has an integration option for you
Whether you have a custom web checkout, Shopify store, or are looking for a no-code solution, Flex has a product to fit your tech stack.
Whether you have a custom web checkout, Shopify store, or are looking for a no-code solution, Flex has a product to fit your tech stack.
Whether you have a custom web checkout, Shopify store, or are looking for a no-code solution, Flex has a product to fit your tech stack.
Help customers get a Letter of Medical Necessity
If your product requires a LOMN to purchase, consumers can apply for one right at check out. No more waiting for an appointment.
If your product requires a LOMN to purchase, consumers can apply for one right at check out. No more waiting for an appointment.
If your product requires a LOMN to purchase, consumers can apply for one right at check out. No more waiting for an appointment.
Enable customer reimbursement
Worried that your customers won't have their HSA/FSA card handy? Flex issues itemized receipts to all customers so they can easily file for reimbursement.
Worried that your customers won't have their HSA/FSA card handy? Flex issues itemized receipts to all customers so they can easily file for reimbursement.
Worried that your customers won't have their HSA/FSA card handy? Flex issues itemized receipts to all customers so they can easily file for reimbursement.
Get setup quickly, or at your own speed
Be up and running in 1 hour with our Shopify Payment app or as little as 48hrs with our API.
Be up and running in 1 hour with our Shopify Payment app or as little as 48hrs with our API.
Be up and running in 1 hour with our Shopify Payment app or as little as 48hrs with our API.
Auto-substantiation purchases
Auto-substantiation for HSA/FSA purchases is a process that electronically verifies eligibility at the point of sale, removing the need for additional documentation.
Auto-substantiation for HSA/FSA purchases is a process that electronically verifies eligibility at the point of sale, removing the need for additional documentation.
Auto-substantiation for HSA/FSA purchases is a process that electronically verifies eligibility at the point of sale, removing the need for additional documentation.
HEAR FROM OUR SATISFIED CUSTOMERS
HEAR FROM OUR SATISFIED CUSTOMERS
HEAR FROM OUR SATISFIED CUSTOMERS
See why our customers made Flex their HSA/FSA payment solution
See why our customers made Flex their HSA/FSA payment solution
See why our customers made Flex their HSA/FSA payment solution
Find out why top brands choose Flex as their trusted partner for HSA/FSA payments.
Find out why top brands choose Flex as their trusted partner for HSA/FSA payments.
Find out why top brands choose Flex as their trusted partner for HSA/FSA payments.
Nanobébé
We have been very happy with the Flex app's functionality and the team's support. The app has enabled our customers to easily use HSA/FSA payments at checkout without any complex setup on our end. Not only that, the team's support is excellent and they actively take the time to get our feedback and suggestions and then actually add them to their development pipeline so that their app keeps getting better. Highly recommend.
Div Brands
It was easy to integrate with Flex. We just had to connect to their APIs - It was quick and painless in technical terms.
Sundaze
Really easy to install. This app is exactly what we were looking for as we are building out our business. This app allowed us to offer a way for customers to use their HSA/FSA card directly on our website. This has been exceedingly helpful to better serve our customers. the withFlex team has been a joy to work. We don't know what we would do without withFlex. Cannot recommend enough.
Stellar Sleep
The Flex team was super responsive throughout our implementation and willing to implement new functionality quickly to make the experience better for our customers.
Forme.science
HSA/FSAs have been a significant revenue driver for our business. We’re glad to have met and implemented Flex!
Embr Labs
The app was super easy to install, and the Flex team has been excellent to work with! This app is a great way to better serve our customers who want to use their FSA / HSA dollars more easily.
Nanobébé
We have been very happy with the Flex app's functionality and the team's support. The app has enabled our customers to easily use HSA/FSA payments at checkout without any complex setup on our end. Not only that, the team's support is excellent and they actively take the time to get our feedback and suggestions and then actually add them to their development pipeline so that their app keeps getting better. Highly recommend.
Div Brands
It was easy to integrate with Flex. We just had to connect to their APIs - It was quick and painless in technical terms.
Sundaze
Really easy to install. This app is exactly what we were looking for as we are building out our business. This app allowed us to offer a way for customers to use their HSA/FSA card directly on our website. This has been exceedingly helpful to better serve our customers. the withFlex team has been a joy to work. We don't know what we would do without withFlex. Cannot recommend enough.
Stellar Sleep
The Flex team was super responsive throughout our implementation and willing to implement new functionality quickly to make the experience better for our customers.
Forme.science
HSA/FSAs have been a significant revenue driver for our business. We’re glad to have met and implemented Flex!
Embr Labs
The app was super easy to install, and the Flex team has been excellent to work with! This app is a great way to better serve our customers who want to use their FSA / HSA dollars more easily.
Nanobébé
We have been very happy with the Flex app's functionality and the team's support. The app has enabled our customers to easily use HSA/FSA payments at checkout without any complex setup on our end. Not only that, the team's support is excellent and they actively take the time to get our feedback and suggestions and then actually add them to their development pipeline so that their app keeps getting better. Highly recommend.
Div Brands
It was easy to integrate with Flex. We just had to connect to their APIs - It was quick and painless in technical terms.
Sundaze
Really easy to install. This app is exactly what we were looking for as we are building out our business. This app allowed us to offer a way for customers to use their HSA/FSA card directly on our website. This has been exceedingly helpful to better serve our customers. the withFlex team has been a joy to work. We don't know what we would do without withFlex. Cannot recommend enough.
Stellar Sleep
The Flex team was super responsive throughout our implementation and willing to implement new functionality quickly to make the experience better for our customers.
Forme.science
HSA/FSAs have been a significant revenue driver for our business. We’re glad to have met and implemented Flex!
Embr Labs
The app was super easy to install, and the Flex team has been excellent to work with! This app is a great way to better serve our customers who want to use their FSA / HSA dollars more easily.
Nanobébé
We have been very happy with the Flex app's functionality and the team's support. The app has enabled our customers to easily use HSA/FSA payments at checkout without any complex setup on our end. Not only that, the team's support is excellent and they actively take the time to get our feedback and suggestions and then actually add them to their development pipeline so that their app keeps getting better. Highly recommend.
Div Brands
It was easy to integrate with Flex. We just had to connect to their APIs - It was quick and painless in technical terms.
Sundaze
Really easy to install. This app is exactly what we were looking for as we are building out our business. This app allowed us to offer a way for customers to use their HSA/FSA card directly on our website. This has been exceedingly helpful to better serve our customers. the withFlex team has been a joy to work. We don't know what we would do without withFlex. Cannot recommend enough.
Stellar Sleep
The Flex team was super responsive throughout our implementation and willing to implement new functionality quickly to make the experience better for our customers.
Forme.science
HSA/FSAs have been a significant revenue driver for our business. We’re glad to have met and implemented Flex!
Embr Labs
The app was super easy to install, and the Flex team has been excellent to work with! This app is a great way to better serve our customers who want to use their FSA / HSA dollars more easily.
Nanobébé
We have been very happy with the Flex app's functionality and the team's support. The app has enabled our customers to easily use HSA/FSA payments at checkout without any complex setup on our end. Not only that, the team's support is excellent and they actively take the time to get our feedback and suggestions and then actually add them to their development pipeline so that their app keeps getting better. Highly recommend.
Div Brands
It was easy to integrate with Flex. We just had to connect to their APIs - It was quick and painless in technical terms.
Sundaze
Really easy to install. This app is exactly what we were looking for as we are building out our business. This app allowed us to offer a way for customers to use their HSA/FSA card directly on our website. This has been exceedingly helpful to better serve our customers. the withFlex team has been a joy to work. We don't know what we would do without withFlex. Cannot recommend enough.
Stellar Sleep
The Flex team was super responsive throughout our implementation and willing to implement new functionality quickly to make the experience better for our customers.
Forme.science
HSA/FSAs have been a significant revenue driver for our business. We’re glad to have met and implemented Flex!
Embr Labs
The app was super easy to install, and the Flex team has been excellent to work with! This app is a great way to better serve our customers who want to use their FSA / HSA dollars more easily.
Nanobébé
We have been very happy with the Flex app's functionality and the team's support. The app has enabled our customers to easily use HSA/FSA payments at checkout without any complex setup on our end. Not only that, the team's support is excellent and they actively take the time to get our feedback and suggestions and then actually add them to their development pipeline so that their app keeps getting better. Highly recommend.
Div Brands
It was easy to integrate with Flex. We just had to connect to their APIs - It was quick and painless in technical terms.
Sundaze
Really easy to install. This app is exactly what we were looking for as we are building out our business. This app allowed us to offer a way for customers to use their HSA/FSA card directly on our website. This has been exceedingly helpful to better serve our customers. the withFlex team has been a joy to work. We don't know what we would do without withFlex. Cannot recommend enough.
Stellar Sleep
The Flex team was super responsive throughout our implementation and willing to implement new functionality quickly to make the experience better for our customers.
Forme.science
HSA/FSAs have been a significant revenue driver for our business. We’re glad to have met and implemented Flex!
Embr Labs
The app was super easy to install, and the Flex team has been excellent to work with! This app is a great way to better serve our customers who want to use their FSA / HSA dollars more easily.
Nanobébé
We have been very happy with the Flex app's functionality and the team's support. The app has enabled our customers to easily use HSA/FSA payments at checkout without any complex setup on our end. Not only that, the team's support is excellent and they actively take the time to get our feedback and suggestions and then actually add them to their development pipeline so that their app keeps getting better. Highly recommend.
Div Brands
It was easy to integrate with Flex. We just had to connect to their APIs - It was quick and painless in technical terms.
Sundaze
Really easy to install. This app is exactly what we were looking for as we are building out our business. This app allowed us to offer a way for customers to use their HSA/FSA card directly on our website. This has been exceedingly helpful to better serve our customers. the withFlex team has been a joy to work. We don't know what we would do without withFlex. Cannot recommend enough.
Stellar Sleep
The Flex team was super responsive throughout our implementation and willing to implement new functionality quickly to make the experience better for our customers.
Forme.science
HSA/FSAs have been a significant revenue driver for our business. We’re glad to have met and implemented Flex!
Embr Labs
The app was super easy to install, and the Flex team has been excellent to work with! This app is a great way to better serve our customers who want to use their FSA / HSA dollars more easily.
Nanobébé
We have been very happy with the Flex app's functionality and the team's support. The app has enabled our customers to easily use HSA/FSA payments at checkout without any complex setup on our end. Not only that, the team's support is excellent and they actively take the time to get our feedback and suggestions and then actually add them to their development pipeline so that their app keeps getting better. Highly recommend.
Div Brands
It was easy to integrate with Flex. We just had to connect to their APIs - It was quick and painless in technical terms.
Sundaze
Really easy to install. This app is exactly what we were looking for as we are building out our business. This app allowed us to offer a way for customers to use their HSA/FSA card directly on our website. This has been exceedingly helpful to better serve our customers. the withFlex team has been a joy to work. We don't know what we would do without withFlex. Cannot recommend enough.
Stellar Sleep
The Flex team was super responsive throughout our implementation and willing to implement new functionality quickly to make the experience better for our customers.
Forme.science
HSA/FSAs have been a significant revenue driver for our business. We’re glad to have met and implemented Flex!
Embr Labs
The app was super easy to install, and the Flex team has been excellent to work with! This app is a great way to better serve our customers who want to use their FSA / HSA dollars more easily.
Nanobébé
We have been very happy with the Flex app's functionality and the team's support. The app has enabled our customers to easily use HSA/FSA payments at checkout without any complex setup on our end. Not only that, the team's support is excellent and they actively take the time to get our feedback and suggestions and then actually add them to their development pipeline so that their app keeps getting better. Highly recommend.
Div Brands
It was easy to integrate with Flex. We just had to connect to their APIs - It was quick and painless in technical terms.
Sundaze
Really easy to install. This app is exactly what we were looking for as we are building out our business. This app allowed us to offer a way for customers to use their HSA/FSA card directly on our website. This has been exceedingly helpful to better serve our customers. the withFlex team has been a joy to work. We don't know what we would do without withFlex. Cannot recommend enough.
Stellar Sleep
The Flex team was super responsive throughout our implementation and willing to implement new functionality quickly to make the experience better for our customers.
Forme.science
HSA/FSAs have been a significant revenue driver for our business. We’re glad to have met and implemented Flex!
Embr Labs
The app was super easy to install, and the Flex team has been excellent to work with! This app is a great way to better serve our customers who want to use their FSA / HSA dollars more easily.
Nanobébé
We have been very happy with the Flex app's functionality and the team's support. The app has enabled our customers to easily use HSA/FSA payments at checkout without any complex setup on our end. Not only that, the team's support is excellent and they actively take the time to get our feedback and suggestions and then actually add them to their development pipeline so that their app keeps getting better. Highly recommend.
Div Brands
It was easy to integrate with Flex. We just had to connect to their APIs - It was quick and painless in technical terms.
Sundaze
Really easy to install. This app is exactly what we were looking for as we are building out our business. This app allowed us to offer a way for customers to use their HSA/FSA card directly on our website. This has been exceedingly helpful to better serve our customers. the withFlex team has been a joy to work. We don't know what we would do without withFlex. Cannot recommend enough.
Stellar Sleep
The Flex team was super responsive throughout our implementation and willing to implement new functionality quickly to make the experience better for our customers.
Forme.science
HSA/FSAs have been a significant revenue driver for our business. We’re glad to have met and implemented Flex!
Embr Labs
The app was super easy to install, and the Flex team has been excellent to work with! This app is a great way to better serve our customers who want to use their FSA / HSA dollars more easily.
Nanobébé
We have been very happy with the Flex app's functionality and the team's support. The app has enabled our customers to easily use HSA/FSA payments at checkout without any complex setup on our end. Not only that, the team's support is excellent and they actively take the time to get our feedback and suggestions and then actually add them to their development pipeline so that their app keeps getting better. Highly recommend.
Div Brands
It was easy to integrate with Flex. We just had to connect to their APIs - It was quick and painless in technical terms.
Sundaze
Really easy to install. This app is exactly what we were looking for as we are building out our business. This app allowed us to offer a way for customers to use their HSA/FSA card directly on our website. This has been exceedingly helpful to better serve our customers. the withFlex team has been a joy to work. We don't know what we would do without withFlex. Cannot recommend enough.
Stellar Sleep
The Flex team was super responsive throughout our implementation and willing to implement new functionality quickly to make the experience better for our customers.
Forme.science
HSA/FSAs have been a significant revenue driver for our business. We’re glad to have met and implemented Flex!
Embr Labs
The app was super easy to install, and the Flex team has been excellent to work with! This app is a great way to better serve our customers who want to use their FSA / HSA dollars more easily.
Nanobébé
We have been very happy with the Flex app's functionality and the team's support. The app has enabled our customers to easily use HSA/FSA payments at checkout without any complex setup on our end. Not only that, the team's support is excellent and they actively take the time to get our feedback and suggestions and then actually add them to their development pipeline so that their app keeps getting better. Highly recommend.
Div Brands
It was easy to integrate with Flex. We just had to connect to their APIs - It was quick and painless in technical terms.
Sundaze
Really easy to install. This app is exactly what we were looking for as we are building out our business. This app allowed us to offer a way for customers to use their HSA/FSA card directly on our website. This has been exceedingly helpful to better serve our customers. the withFlex team has been a joy to work. We don't know what we would do without withFlex. Cannot recommend enough.
Stellar Sleep
The Flex team was super responsive throughout our implementation and willing to implement new functionality quickly to make the experience better for our customers.
Forme.science
HSA/FSAs have been a significant revenue driver for our business. We’re glad to have met and implemented Flex!
Embr Labs
The app was super easy to install, and the Flex team has been excellent to work with! This app is a great way to better serve our customers who want to use their FSA / HSA dollars more easily.
Nanobébé
We have been very happy with the Flex app's functionality and the team's support. The app has enabled our customers to easily use HSA/FSA payments at checkout without any complex setup on our end. Not only that, the team's support is excellent and they actively take the time to get our feedback and suggestions and then actually add them to their development pipeline so that their app keeps getting better. Highly recommend.
Div Brands
It was easy to integrate with Flex. We just had to connect to their APIs - It was quick and painless in technical terms.
Sundaze
Really easy to install. This app is exactly what we were looking for as we are building out our business. This app allowed us to offer a way for customers to use their HSA/FSA card directly on our website. This has been exceedingly helpful to better serve our customers. the withFlex team has been a joy to work. We don't know what we would do without withFlex. Cannot recommend enough.
Stellar Sleep
The Flex team was super responsive throughout our implementation and willing to implement new functionality quickly to make the experience better for our customers.
Forme.science
HSA/FSAs have been a significant revenue driver for our business. We’re glad to have met and implemented Flex!
Embr Labs
The app was super easy to install, and the Flex team has been excellent to work with! This app is a great way to better serve our customers who want to use their FSA / HSA dollars more easily.
Nanobébé
We have been very happy with the Flex app's functionality and the team's support. The app has enabled our customers to easily use HSA/FSA payments at checkout without any complex setup on our end. Not only that, the team's support is excellent and they actively take the time to get our feedback and suggestions and then actually add them to their development pipeline so that their app keeps getting better. Highly recommend.
Div Brands
It was easy to integrate with Flex. We just had to connect to their APIs - It was quick and painless in technical terms.
Sundaze
Really easy to install. This app is exactly what we were looking for as we are building out our business. This app allowed us to offer a way for customers to use their HSA/FSA card directly on our website. This has been exceedingly helpful to better serve our customers. the withFlex team has been a joy to work. We don't know what we would do without withFlex. Cannot recommend enough.
Stellar Sleep
The Flex team was super responsive throughout our implementation and willing to implement new functionality quickly to make the experience better for our customers.
Forme.science
HSA/FSAs have been a significant revenue driver for our business. We’re glad to have met and implemented Flex!
Embr Labs
The app was super easy to install, and the Flex team has been excellent to work with! This app is a great way to better serve our customers who want to use their FSA / HSA dollars more easily.
Nanobébé
We have been very happy with the Flex app's functionality and the team's support. The app has enabled our customers to easily use HSA/FSA payments at checkout without any complex setup on our end. Not only that, the team's support is excellent and they actively take the time to get our feedback and suggestions and then actually add them to their development pipeline so that their app keeps getting better. Highly recommend.
Div Brands
It was easy to integrate with Flex. We just had to connect to their APIs - It was quick and painless in technical terms.
Sundaze
Really easy to install. This app is exactly what we were looking for as we are building out our business. This app allowed us to offer a way for customers to use their HSA/FSA card directly on our website. This has been exceedingly helpful to better serve our customers. the withFlex team has been a joy to work. We don't know what we would do without withFlex. Cannot recommend enough.
Stellar Sleep
The Flex team was super responsive throughout our implementation and willing to implement new functionality quickly to make the experience better for our customers.
Forme.science
HSA/FSAs have been a significant revenue driver for our business. We’re glad to have met and implemented Flex!
Embr Labs
The app was super easy to install, and the Flex team has been excellent to work with! This app is a great way to better serve our customers who want to use their FSA / HSA dollars more easily.
Nanobébé
We have been very happy with the Flex app's functionality and the team's support. The app has enabled our customers to easily use HSA/FSA payments at checkout without any complex setup on our end. Not only that, the team's support is excellent and they actively take the time to get our feedback and suggestions and then actually add them to their development pipeline so that their app keeps getting better. Highly recommend.
Div Brands
It was easy to integrate with Flex. We just had to connect to their APIs - It was quick and painless in technical terms.
Sundaze
Really easy to install. This app is exactly what we were looking for as we are building out our business. This app allowed us to offer a way for customers to use their HSA/FSA card directly on our website. This has been exceedingly helpful to better serve our customers. the withFlex team has been a joy to work. We don't know what we would do without withFlex. Cannot recommend enough.
Stellar Sleep
The Flex team was super responsive throughout our implementation and willing to implement new functionality quickly to make the experience better for our customers.
Forme.science
HSA/FSAs have been a significant revenue driver for our business. We’re glad to have met and implemented Flex!
Embr Labs
The app was super easy to install, and the Flex team has been excellent to work with! This app is a great way to better serve our customers who want to use their FSA / HSA dollars more easily.