1. Introduction – What is Publication 5428?
IRS Publication 5428 is an official fact sheet titled “Fact Sheet: Becoming a Certifying Acceptance Agent (CAA) for SPEC Partners.” The Internal Revenue Service released the latest updated edition bearing Revision Date October 2026 (Catalog Number 74680M), officially published in the fall on September 3, 2026. This release delivers modernized guidance for community organizations and volunteers helping individuals navigate the federal tax system.
At its core, Publication 5428 outlines how partner organizations working with the IRS Stakeholder Partnerships, Education and Communication (SPEC) office can become authorized to process Individual Taxpayer Identification Number (ITIN) applications. The 2026 revisions streamline the digital application process on IRS e-Services, clarify training certifications, and provide updated procedures for document verification.
For taxpayers without a Social Security Number (SSN), getting an ITIN is necessary to file a tax return and claim eligible benefits. Publication 5428 serves as the roadmap for non-profit and community groups who want to offer direct, in-person verification services so taxpayers do not have to mail sensitive identification papers to the IRS.
2. Who Should Read This Publication
Publication 5428 is designed specifically for organizations that collaborate with the IRS to support underserved communities. If your group participates in free tax preparation, this publication explains how to expand your services to include official ITIN processing.
- VITA and TCE Site Coordinators: Volunteer Income Tax Assistance and Tax Counseling for the Elderly leaders who want to offer ITIN verification alongside tax return preparation.
- Community Nonprofits and Faith-Based Groups: Organizations serving immigrants, foreign students, and low-income families that need reliable federal tax assistance.
- Colleges and Universities: Academic institutions that support international students, visiting scholars, and non-resident researchers.
- SPEC Program Volunteers: Dedicated volunteer preparers seeking formal credentials to verify original foreign documents and identity credentials.
3. Key Topics Covered
Publication 5428 provides a structured overview of the Certifying Acceptance Agent program. It guides readers from initial eligibility through ongoing annual compliance.
- The Role of a CAA: How a Certifying Acceptance Agent differs from a basic tax preparer and what authorities the IRS grants to them.
- Organizational Eligibility: Criteria that SPEC partners must meet before applying, including good standing with the IRS.
- Training Mandates: Specific training modules required for staff, including forensic document training and ITIN procedural exams.
- e-Services Application Process: Step-by-step instructions for submitting electronic applications and assigning roles.
- Document Verification Standards: IRS rules for validating foreign passports, birth certificates, and national identification cards.
- Agreement Finalization: The digital signature and confirmation workflow required to officially activate CAA status.
4. Detailed Breakdown of Main Concepts
What is a Certifying Acceptance Agent (CAA)?
A Certifying Acceptance Agent is an individual or organization authorized by the IRS to help foreign individuals and non-residents obtain an ITIN. Unlike a standard Acceptance Agent, a CAA has the legal authority to review original identification documents and issue a formal Certificate of Accuracy. This means clients keep their original passports and documents safely in hand instead of mailing them to the IRS service center.
The Role of the SPEC Division
The Stakeholder Partnerships, Education and Communication (SPEC) office is the IRS outreach arm that manages volunteer tax programs nationwide. SPEC partners operate community-based programs that assist low-to-moderate-income families. Publication 5428 specifically targets these partners to ensure high-need neighborhoods have free, trustworthy ITIN processing centers.
Training and Forensic Document Verification
Before an organization can receive CAA status, designated staff members must complete mandatory IRS ITIN training. In addition, responsible parties must take an approved forensic document identification course. This specialized course teaches volunteers how to spot altered, expired, or counterfeit foreign identity documents.
The Electronic Application and PPO Signature
Under the updated procedures, all applications must be submitted online through the IRS e-Services system. Each applicant must designate a Primary Point of Contact (PPO) and list all responsible parties. Once the IRS ITIN Policy Section approves the background checks and suitability checks, the PPO must log into e-Services to electronically sign the formal CAA agreement.
5. Practical Examples or Scenarios
Scenario 1: Helping a Local Family Keep Their Passports
Carlos is a foreign worker in Texas who needs an ITIN for his spouse, Maria, so they can file their joint tax return. Without a local CAA, Maria would have to mail her original foreign passport to the IRS in Austin, risking postal loss or weeks of travel disruption. Instead, they visit a local VITA clinic operating under Publication 5428 guidelines. The trained CAA reviews Maria’s original passport in person, certifies its validity, returns the passport immediately, and forwards the certified paperwork to the IRS.
Scenario 2: A University Clinic for Visiting Scholars
A regional university regularly hosts foreign research scholars on temporary visas who are not eligible for Social Security numbers. By following Publication 5428, the university’s business school trains student volunteers and professors to operate a campus CAA site. The scholars receive free document verification directly on campus, allowing them to file tax returns on time and avoid processing delays.
6. How This Publication Relates to Specific Forms
Publication 5428 connects directly with several essential IRS tax forms. Understanding these connections helps volunteers ensure complete and compliant submissions.
| IRS Form / Document | Form Name | Purpose & CAA Connection |
|---|---|---|
| Form W-7 | Application for IRS Individual Taxpayer Identification Number | The primary application completed by the taxpayer to request or renew an ITIN. |
| Form 13551 | Application to Participate in the IRS Acceptance Agent Program | The electronic application an organization submits to become an authorized CAA. |
| Form W-7 (COA) | Certificate of Accuracy for IRS ITIN | The official certification issued by the CAA confirming they inspected original proofs of identity. |
| Form 1040 / 1040-NR | U.S. Individual Income Tax Return | The federal tax return that must accompany most Form W-7 applications when submitted. |
7. Common Misunderstandings Clarified
There are several common misconceptions surrounding the CAA program and ITINs that Publication 5428 helps clarify:
- Myth: An ITIN grants legal status or work rights. An ITIN is solely a tax processing number issued by the IRS for federal tax reporting. It does not provide immigration status, legal residency, or authorization to work in the United States.
- Myth: Any tax preparer can certify identity documents. Only authorized Certifying Acceptance Agents can review documents and sign the Form W-7 Certificate of Accuracy. Standard tax preparers cannot perform this service.
- Myth: CAAs can accept photocopies from clients. A CAA must inspect the original identification documents or certified copies issued directly by the official government agency that issued the document. Regular photocopies or notarized copies are strictly not acceptable.
- Myth: Becoming a CAA is automatic for VITA sites. Partnering with SPEC does not automatically grant CAA privileges. Sites must complete a separate application, pass background reviews, and complete required forensic training.
8. Why This Publication Matters for Taxpayers
Publication 5428 plays a vital role in protecting taxpayers from paperwork loss and fraud. Mailing original identification documents, such as national passports or birth certificates, carries real emotional and financial stress for immigrant families. When local SPEC partners become CAAs, taxpayers can present their papers locally and take them home the same day.
Furthermore, applications submitted through trained CAAs experience substantially fewer errors and rejections. This helps vulnerable populations avoid long IRS processing backlogs, late filing penalties, and delays in receiving eligible tax refunds.
9. Frequently Asked Questions
Who is eligible to apply through the process described in Publication 5428?
Organizations and community coalitions that have an existing partnership with the IRS SPEC office, such as established VITA or TCE programs, are eligible. These groups must be in good tax standing and have staff willing to complete background checks and training.
How long does the CAA application approval take?
The electronic application and background review process typically takes several months from start to finish. Organizations are encouraged to apply well before the start of the upcoming filing season to allow time for suitability checks and agreement signing.
Does the taxpayer pay a fee when visiting a SPEC partner CAA?
No. SPEC partners, including VITA and TCE sites, provide tax preparation and ITIN certification services completely free of charge. They cannot charge taxpayers any fees for document review or return preparation.
What happens if an organization fails to renew its CAA agreement?
CAA agreements are issued for specific time periods. Organizations must monitor their agreement status in IRS e-Services, complete periodic refresher training, and submit required renewal documentation to avoid lapses in certification.
10. Conclusion
IRS Publication 5428 is an indispensable resource for community groups aiming to broaden tax access. By guiding SPEC partners through the steps required to become Certifying Acceptance Agents, the IRS empowers local volunteers to deliver secure, trusted ITIN services.
With the 2026 updates, the path to becoming a CAA is clearer and more digital than ever before. Organizations that take advantage of this guide help safeguard taxpayer identities, eliminate filing barriers, and ensure every community member can fulfill their tax obligations with confidence.
