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EA3 case study

Modernizing Identity at the Front Door of the IRS

The IRS relies on eA3 as its enterprise Identity, Credential, and Access Management foundation. Through eA3, Makpar supports secure access for more than 60 million registered users, protecting taxpayer data while enabling fast, reliable access to critical services.

THE CHALLENGE:
Identity at National Scale
As digital services expanded, the IRS faced growing pressure to:
practitioner population

Support a rapidly increasing taxpayer and practitioner population

services portfolio
Expand its online services portfolio to business entities
Maintain strong identity assurance and fraud protection
consistent access
Deliver consistent access and user experience across dozens of applications
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Maintain high availability during peak filing periods
consistent across systems
Secure access across a growing mix of legacy and modern systems
no disruption
Modernize without disrupting mission critical services

DHS and CISA guidance reinforce identity as the primary security perimeter, requiring phishing resistant authentication and enterprise visibility to protect taxpayer trust.

The Makpar Approach:
Engineering Identity for Scale, Security, and Resilience

Makpar engineers eA3 as a unified, high availability identity management framework that supports both legacy
and modern IRS systems. Embedded automation and governance enable secure updates at speed while
preparing the IRS for future modernization.

Solutions Powering eA3:
Built for Mission Scale and Operational Reliability
identity assurance
Identity & Access Management
  • Secure digital identity at national scale
  • Precise, role based access controls
  • Federated identity services
devsecops
DevSecOps, Automation, and Governance
  • Identity governance embedded into CI/CD pipelines
  • Automated testing and infrastructure as code
  • Continuous compliance with federal security and
    identity standards
api icon
Unified API Access Layer
  • Single, governed API layer
  • Simplified, standards based integration
  • Consistent identity, credential, & authorization
phishing resistant
Phishing Resistant MFA and Behavioral Analytics
  • Hardware backed, phishing resistant MFA
  • Behavioral analytics and aggregated logging
  • Early detection of anomalous access and fraud signals
monitoring
Monitoring & Analytics
  • Real time monitoring of identity, access, & performance
  • Fraud detection and anomaly analysis
  • Operational visibility during peak demand
legacy integration
Legacy System Integration
  • Brokered and federated integration models
  • Support for user to machine and machine to machine
    access
  • Modernization without disruptive rewrites
THE IMPACT
Lower Costs. Seamless Access. Trusted Digital Services.
Fast, reliable access for tens of millions of taxpayers and practitioners
Consistent performance at national scale, including peak filing periods
Simpler, more consistent authentication across IRS digital services
Stronger fraud prevention through high assurance identity controls
Lower cost service delivery, with digital transactions costing cents instead of hundreds of dollars
A future ready identity foundation supporting unified API access and new digital services
Why It Matters:
Identity Enables Trust

Delivers a better taxpayer experience through fast, reliable, and consistent access to IRS digital services

Reduces fraud and protects trust with high assurance identity verification and phishing resistant authentication

Sustains mission resilience by supporting secure access across legacy and modern systems during peak demand

ICAM:
Zero Trust
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