TL;DR: MX ISO Agent portal login is at mxisoagent.com/mx/login.aspx. Enter User ID and Password. No credentials? Call Priority Payment Systems: (844) 647-3616 or contact your Relationship Manager.
Complete guide to MX ISO Agent login at mxisoagent.com. Merchant boarding, portfolio management, reporting and account tools for Priority Payment Systems ISOs and sales agents.
Direct access to MX ISO Agent and MX Merchant portals
The complete merchant management and boarding portal for Priority Payment Systems ISOs and agents
MX ISO Agent (mxisoagent.com) is the primary merchant management and boarding platform developed by Priority Payment Systems LLC. It is used by Independent Sales Organizations (ISOs), sales agents and payment processing partners to manage their entire merchant portfolio from a single dashboard.
After completing the MX ISO Agent login, agents access tools for merchant boarding via full applications, QuickStart program and Invite Codes. The portal connects to TSYS and First Data processing networks and supports the complete merchant lifecycle from initial onboarding through ongoing account management.
For developers and ISVs, mxisoagent.com provides a REST-based boarding API with OAuth 1.0a and Basic Authentication for automated merchant management integration. Priority Payment Systems also offers MX Connect as the next-generation replacement for the legacy MX ISO Agent platform.
Login URL: mxisoagent.com/mx/login.aspx
Use the portal button above for direct access.
Everything available after MX ISO Agent login at mxisoagent.com
Board new merchants via full application, QuickStart (18-20 fields) or Invite Code. Connects directly to TSYS and First Data processing networks from within the MX ISO Agent portal.
View and manage your full merchant portfolio from one dashboard. Search, filter and update merchant accounts. Monitor processing activity and account status across all managed merchants.
Download transaction reports, merchant statements, batch summaries and portfolio analytics. Export data in multiple formats for reconciliation and performance tracking.
Generate and manage Invite Codes for streamlined merchant onboarding. Codes pre-configure rates, fees, portfolio assignment and agent attribution for fast merchant setup.
MX ISO Agent login uses User ID and password with MFA support. Role-based access controls limit portal permissions by user type. Full activity audit logs for compliance.
Full REST API for automated boarding and management via OAuth 1.0a. MX Connect is the next-generation replacement platform with enhanced features and boarding capabilities.
Real screenshots of mxisoagent.com and MX Merchant platform
Access your mxisoagent.com portal in 4 steps
Click the login button above or go directly to mxisoagent.com/mx/login.aspx in your browser.
Type your MX ISO Agent User ID — provided by Priority Payment Systems when your agent account was created.
Enter your password. It is case-sensitive — check that Caps Lock is off before submitting.
Click Sign In. Access your full portfolio, merchant boarding tools and reporting dashboard.
Understanding the relationship between MX ISO Agent and MX Merchant
MX Merchant is the payment processing portal used by the merchants themselves after they have been boarded through MX ISO Agent. While agents manage their portfolios at mxisoagent.com, the merchants they board access their own accounts at app.mxmerchant.com.
MX Merchant provides merchants with a customizable dashboard to track customer data, a built-in iOS card payment application, batch management, payment history with void and return functionality, tip adjustment tools and receipt delivery via print, email or text.
As an ISO or agent using MX ISO Agent portal, you can create and manage user credentials for your boarded merchants directly within mxisoagent.com. Navigate to the merchant account, select the MX Merchant tab, click Team and create a username and password for the merchant.
The successor to MX ISO Agent from Priority Payment Systems
MX Connect is the premier merchant boarding and servicing platform developed by Priority Payment Systems as the next-generation replacement for MX ISO Agent. Priority has been transitioning partners from the legacy mxisoagent.com and VIMAS platforms to MX Connect since the end of 2021.
MX Connect offers more robust features, streamlined boarding solutions and enhanced reporting functionality compared to the legacy MX ISO Agent portal. It provides a modern REST API with improved documentation, a cleaner user interface and better support for complex boarding scenarios.
If your MX ISO Agent login credentials are no longer working, your account may have been migrated to MX Connect. Contact your Relationship Manager or Priority Payment Systems at (844) 647-3616 to confirm your current portal and obtain MX Connect access.
MX ISO Agent portal serves payment processing partners across the United States
ISOs use MX ISO Agent as their primary management platform for the full merchant lifecycle. After completing mx iso agent login, ISOs manage onboarding, account updates, dispute resolution and portfolio reporting for all their managed merchants. The portal supports multi-location merchant groups and complex organizational structures.
Individual sales agents access mxisoagent.com to submit merchant applications, generate Invite Codes for prospects and track their portfolio performance. The QuickStart program lets agents board merchants quickly with minimal data entry, getting them processing faster.
Integrated Software Vendors use the MX ISO Agent REST API to build automated merchant boarding workflows, custom reporting tools and payment integrations. The API uses OAuth 1.0a authentication and is organized around REST principles for predictable integration.
Priority Payment Systems and MX ISO Agent serve merchants across all major US industries:
Understanding all Priority Payment Systems portals
| Feature | MX ISO Agent | MX Merchant | MX Connect |
|---|---|---|---|
| Primary Users | ISOs, agents, partners | Merchants (businesses) | ISOs, agents (next-gen) |
| Login URL | mxisoagent.com/mx/login.aspx | app.mxmerchant.com | Via Relationship Manager |
| Merchant Boarding | Full + QuickStart + Invite Code | Not available | Advanced boarding API |
| Portfolio Management | Full portfolio oversight | Own account only | Enhanced portfolio tools |
| Transaction Reports | Portfolio-level | Own transactions | Enhanced reporting |
| API Access | REST + OAuth 1.0a | MX Merchant API | MX Connect API |
| Invite Codes | Generate & manage | Use only | Advanced invite system |
| Processing Networks | TSYS + First Data | All networks | All networks |
| Platform Status | Legacy (active) | Current | Current (replacing MXA) |
The MX ISO Agent portal login URL is mxisoagent.com/mx/login.aspx. This is the direct link to the Priority Payment Systems ISO and agent management portal login page. Use the login button on this page for direct access.
Your User ID is provided by Priority Payment Systems when your agent account is created. It is typically your email address or a unique ID assigned by your Relationship Manager. If you don't have it, contact Priority Payment Systems at (844) 647-3616.
MX ISO Agent access is available to Priority Payment Systems partners — ISOs, sales agents and referral partners. To get started, contact Priority Payment Systems Business Development at [email protected] or call (844) 647-3616.
MX ISO Agent (mxisoagent.com) remains active for existing accounts in 2026. However, Priority Payment Systems has been migrating partners to MX Connect, the next-generation platform. Contact your Relationship Manager to confirm your current portal.
VIMAS was a legacy boarding platform that Priority Payment Systems sunset at the end of 2021. Partners on VIMAS were migrated to MX ISO Agent and subsequently to MX Connect. If you were on VIMAS, contact your Relationship Manager.
Yes. MX ISO Agent supports merchant boarding to both TSYS and First Data processing networks. The QuickStart program specifically supports both networks. Contact your Relationship Manager to confirm which network is configured for your portfolio.
Chrome, Edge, Firefox and Safari (latest versions) work best. The portal also lists Firefox 2.0+, IE 7.0+, Safari 3.0+ and Chrome 18.0+ as supported. Always use the latest browser version and avoid Internet Explorer for best results.
After mx iso agent login, search for the boarded merchant account, click on the account, select the MX Merchant tab, click Team and create a username and password for the merchant to access their MX Merchant account.
Log in to manage your merchant portfolio, board new merchants and access reporting tools at mxisoagent.com.
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