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Designed for merchant participation at scale
The S3® merchant network enables retailers to accept targeted, pre‑funded health benefit dollars — without disrupting existing checkout experiences. Eligibility, real‑time validation and spending controls are handled behind the scenes, keeping transactions fast, familiar and easy for store teams to support.
Built to scale across locations, the enterprise‑backed network helps merchants attract incremental spend, increase basket sizes and unlock ongoing revenue — while providing access for eligible shoppers in their communities.
How the S3 merchant network delivers value at checkout
In‑store first, omnichannel ready
Benefit spend works across in‑store, online and delivery channels — so eligible shoppers can use their benefits wherever they already shop.
The S3 merchant network is designed to fit naturally into existing checkout experiences, helping approved benefit dollars flow through with confidence while minimizing disruption to day‑to‑day operations.
Connect to a broad benefits ecosystem
The S3 merchant network connects your business to hundreds of payers and millions of eligible members through a single, trusted network.
This shared ecosystem helps expand where and how benefit dollars can be spent — with one simple connection to the S3 network.
Designed to fit how your business operates
The S3 merchant network is designed to work across a variety of merchant environments — offering flexibility in how businesses participate while maintaining a consistent, reliable checkout experience.
Optum manages program controls behind the scenes to support high availability, low dispute rates and predictable economics — including no third‑party network fees.
Key benefits
Built to help merchants attract trusted customers, increase incremental spend, and support a more confident checkout experience.
Greater market share
Capture new customers and increase sales as motivated shoppers actively seek participating merchants to spend more of their health benefit dollars in your stores.
Enhanced visibility
Gain visibility as your brand becomes part of shoppers’ everyday benefit experience.
Higher customer engagement
Engage shoppers through everyday benefits like OTC and food, with flexibility to support additional benefit programs as offerings expand.
Positive exposure
Reinforce your commitment to community health and well‑being through participation in a trusted, nationwide network.
Dedicated team support
We equip your team with intuitive training, proven strategies, and dedicated account support from onboarding through ongoing participation.
Industry insights
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Complementary solutions
Service
Supplemental Benefits for Members
Healthy Benefits+ is a smarter, simpler way to manage supplemental benefits. We help health plans maximize every benefit dollar while delivering a modern, member‑first experience.
Solution suite
Financial solutions
Explore our tailored healthcare solutions to help you strengthen financial health, reduce complexity and achieve operational excellence.
Optum Financial is a registered trademark of Optum, Inc. in the U.S. and other jurisdictions. All other brand or product names are the property of their respective owners. Because we are continuously improving our products and services, the products and services noted herein are presented as examples.