Support: Authorize.net support is available 24x7.

• Merchant Support - Sign in to the Merchant Interface start a chat or a support case.
  • US: 877.447.3938
  • UK/Europe: +44 (0) 203 564 4844
  • AUS: +61 1800 019 932
• Partner Support - Sign in to the Partner Interface to start a chat or a support case.
  • US: 888.437.0481
  • UK/Europe: +44 (0) 203 564 5370
• Affiliate Partner Support - Sign in to the Partner Interface to start a chat or a support case.
  • US: 866.682.4131
  • UK/Europe: +44 (0) 203 564 5370

New Merchants: Merchants that need a payment gateway account may contact Sales for assistance: Email Inquiry

• US: 1.888.323.4289
• Canada: 1.877.580.2077
• International: +44 (0) 203 564 4843

New Partners: For Independent Sales Organizations (ISOs), Merchant Service Providers (MSPs) and other financial institutions that would like to become Authorize.net partner, please contact Sales for assistance: Email Inquiry

New Developers: For companies with products or services that require a payment gateway–shopping cart developers, point-of-sale systems developers, Web developers, Web hosting, Internet Service Providers (ISP) or any company with merchant customers–and wish to explore business development opportunities: Developer Center Contact Form