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  • Payment Solutions
    • By business size
      • Small businessSimple card-present and online payments designed to grow with your business
      • Large businessEnterprise pricing, surcharging, and deep integrations for high-volume merchants
      • SaaS platformsEmbedded payments and platform monetization tools built for software companies
    • By industry
      • RetailIn-store, e-commerce, and omnichannel payments, seamlessly integrated
      • Field servicesMobile payments, invoicing, and recurring billing for teams on the road
      • Professional servicesInvoicing, ACH, and subscription billing for service-based businesses
      • HealthcareHIPAA-aware payment workflows for practices, billing groups, and clinics
  • Products
    • PaymentsAccept card-present and online payments through one all-in-one platform Powered by Stax Pay
    • Embedded paymentsBuild payments into your software and unlock new revenue streams Powered by Stax Connect
    • SurchargingPass on credit card processing fees with a fully compliant program Powered by CardX by Stax
    • Recurring billingAutomate subscription billing and reduce late or failed payments Powered by Stax Bill
  • Pricing
  • Company
    • About
      • About StaxOur mission, our story, and the team building the future of payments
      • LeadershipThe executive team leading Stax
      • CareersOpen roles across engineering, sales, marketing, and support
      • PressNews, awards, and media coverage
    • Our product family
      • Stax PayPayment processing for small and large businesses
      • Stax ConnectEmbedded payments for SaaS platforms
      • Stax BillAutomated subscription billing and revenue management
      • CardX by StaxCompliant surcharging programs
      • Stax ProcessingFull-stack, end-to-end payment processing for partners and ISOs
  • Resources
    • Insights
      • BlogIndustry trends, product news, and payments tips
      • VideosDemos, customer stories, and explainer content
      • GuidesLong-form playbooks for merchants and software platforms
      • Payments dictionaryPlain-language definitions of payments terminology
    • Developers & support
      • API documentationReference, guides, and SDKs for the Stax API
      • Support knowledgebaseHelp articles and troubleshooting for Stax products
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Solutions

  • For Businesses
  • For SaaS Platforms
  • Stax Pay
  • Stax Connect
  • CardX by Stax
  • Stax Processing
  • Stax Bill
  • Stax API
  • Pricing

Capabilities

  • Surcharge
  • Equipment
  • Lending
  • Mobile Payments
  • E-commerce
  • Invoicing
  • In-person Payments
  • Embedded Payments
  • White Label Payment Processing for SaaS

Resources

  • Insights
  • Blog
  • Videos
  • API Documentation
  • Support Knowledgebase
  • Stax Pay Login
  • Stax Connect Login
  • Stax Bill Login
  • APPSOS Login
  • CardX Login

Company

  • About Us
  • Careers
  • Leadership
  • Press
  • Contact Sales
  • Contact Support
  • Partner with Us
  • Media Inquiries

Stax Payments, Inc. is a registered ISO/MSP in association with Fifth Third Bank, Cincinnati, OH and Pinnacle Bank, a Tennessee Bank, dba Synovus Bank, Columbus, GA . Stax Payments, Inc. is a registered partner/ISO of Elavon, Inc. Georgia, (a wholly owned subsidiary of U.S. Bancorp, Minneapolis, MN). Stax Canada, Inc. is a registered MSP/ISO of the Canadian branch of U.S. Bank National Association and Elavon ©2026
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