To ensure your customers clearly understand they can use their HSA/FSA funds to pay for eligible products, it’s important to display HSA/FSA eligibility messaging prominently at the top of your inline cart or checkout. This guide explains why this placement matters and offers best practices to implement it effectively.

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Why it matters

Many customers are unaware that:
  • Their purchase includes HSA/FSA-eligible products
  • They can use their HSA or FSA card just like a credit card with Flex at checkout
By highlighting eligibility early in the purchase journey, specifically in the cart or checkout, you can help:
  • Reduce friction and confusion
  • Increase trust and perceived value
  • Improve conversion rates for eligible product purchases

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Best practice: inline cart eligibility messaging

  • Top of the inline cart drawer or page
  • Above or near the subtotal section
  • Clearly visible before the user initiates checkout

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Example message

One or more items in your cart are HSA/FSA eligible! Select Flex at checkout to use your HSA/FSA card.

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Design tips

  • Use a Flex badge or icon to attract attention
  • Display a link to a dedicated landing page or tooltip explaining how HSA/FSA payments work
  • Show item-level HSA/FSA eligibility next to applicable line items, when possible

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Industry best practices for cart messaging

Best PracticeDescription
Be explicitUse terms like “HSA/FSA card,” “eligible,” and “Flex” to avoid ambiguity
Keep it briefCart messaging should be 1–2 short lines to avoid clutter
Use visual cuesFlex Icons and consistent HSA/FSA branding help reinforce the message
Repeat strategicallyReinforce eligibility in product pages, the cart, and during checkout

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Buttons

In addition to messaging, consider adding a button or call-to-action that helps customers checkout using their HSA/FSA funds.
Button 1Button 2
Button 3Button 4

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Business impact

Displaying HSA/FSA eligibility in the cart can drive measurable results:
  • Higher conversion rates for eligible products
  • Increased cart confidence - customers feel empowered when using pre-tax funds
  • Lower abandonment rates for health-related items

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Implementation notes

  • If you’re using Shopify, this messaging can be added via theme customizations to your cart page. You can also add it in the cart-drawer.liquid or cart.liquid files.
  • You can optionally use product tags to conditionally display the message only when HSA/FSA-eligible items are present.

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Summary

Highlighting HSA/FSA eligibility with Flex at the top of the cart is one of the highest-impact ways to drive awareness and usage. By clearly communicating this benefit, you unlock a powerful incentive for your customers to complete their purchase using funds they’ve already set aside. If you need help implementing this in your cart UI, reach out to support@withflex.com.

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Examples