What Is an IRS Acceptance Agent (and a Certifying Acceptance Agent)?

What Is an IRS Acceptance Agent (and CAA)?

If you've researched how to get an ITIN, you've probably run into two similar-sounding terms: Acceptance Agent (AA) and Certifying Acceptance Agent (CAA). They sound like a distinction without a difference, but the gap between them determines whether you have to mail your original passport to the IRS or not — which, for most applicants, is the single biggest practical concern in the whole process.

We are a Certifying Acceptance Agent, so we get asked constantly what that actually means, how it's different from a regular Acceptance Agent, how to tell if someone claiming to be one is legitimate, and what exactly we're allowed to do versus what still has to go through the IRS directly. This guide answers all of that in detail.

The Basic Difference: AA vs. CAA

Acceptance Agent (AA): An individual or entity authorized by the IRS to assist applicants in completing Form W-7, review the application for completeness, and forward it to the IRS along with copies of supporting identification documents. Critically, a standard AA cannot certify that they've verified the authenticity of an original document — they can review it, but the applicant still generally has to send original documents (or IRS-certified copies from the issuing agency) to the IRS directly, or the AA forwards originals on the applicant's behalf.

Certifying Acceptance Agent (CAA): An individual or entity that has gone through additional IRS vetting, training, and a formal agreement, which authorizes them to physically inspect original identity documents, verify their authenticity, and certify copies of those documents for submission — meaning the applicant's original passport or ID never has to leave their hands or go into the mail. The CAA takes on legal responsibility for verifying the document was genuine, current, and belongs to the applicant, and submits a signed Certificate of Accuracy (Form W-7 COA) along with the application package.

The short version: an AA helps you fill out the paperwork; a CAA can additionally vouch for your original documents so you don't have to mail them anywhere.

There's also a meaningful distinction in what each can certify for:

A CAA can generally certify passports for the primary applicant and for dependents (subject to current IRS program rules).
Certain other documents, particularly birth certificates for dependents in specific circumstances, historically have required either the original be mailed to the IRS or verification at a Taxpayer Assistance Center, rather than CAA certification — this has shifted over the years as the IRS has updated the CAA program, so it's worth confirming current rules for your specific dependent documentation with your CAA directly.

How the IRS Vets and Approves Acceptance Agents

Becoming a CAA isn't a matter of signing up on a website. The IRS runs a formal application and agreement process:

1. Application submission. Prospective agents submit Form 13551 (Application to Participate in the IRS Acceptance Agent Program), including details about the business, its principals, and the intended service area.

2. Suitability check / background review. The IRS conducts a suitability check on the applicant and responsible parties, which can include a review of tax compliance history. An agent (or the business's responsible individuals) with unresolved tax compliance problems is not going to make it through this stage.

3. Fingerprinting. Principals and responsible parties associated with the application generally must submit fingerprints as part of the vetting process, similar to other IRS-regulated practitioner programs, unless they qualify for an exemption (such as being an attorney, CPA, or enrolled agent in good standing, in specific circumstances defined by the IRS).

4. Mandatory forensic document training. This is the piece that separates a CAA from a general tax preparer. CAA applicants must complete IRS-specified training on identifying fraudulent or altered identity documents — passport security features, common alteration techniques, inconsistencies in font, seals, and photo placement, and how to compare a physical document against its claimed issuing authority's standards. This training has to be completed (and in many program cycles, certified/attested to) before the agreement is finalized.

5. Execution of a formal Acceptance Agent Agreement with the IRS. This is a binding agreement laying out exactly what the agent can and cannot do, recordkeeping obligations, and the consequences of non-compliance, including revocation of the agreement.

6. Ongoing compliance and quality review. The IRS can request copies of an agent's certified applications, review a sample of submitted W-7 packages for accuracy, and revoke an agent's status if standards aren't maintained. Agents are also expected to keep certain records (like copies of the documents reviewed and the Certificate of Accuracy issued) for a defined retention period in case of IRS audit of the agent's own practice.

This is a meaningfully higher bar than "someone who's filled out a few W-7s before," and it's the reason the IRS is willing to let a CAA certify original documents without ever seeing the originals themselves.

What the Certificate of Accuracy Actually Is

The Certificate of Accuracy (COA) is the document that makes the whole CAA system work. When a CAA reviews your passport or other acceptable ID in person (or via an authorized alternative review method, depending on current IRS guidance), they complete a COA confirming:

They personally reviewed the original document.
The document appears genuine and unaltered.
The identity and foreign status information on the W-7 matches what's shown on the document.
Copies attached to the application are true and accurate copies of the original the CAA physically examined.

This certificate is submitted with the W-7 instead of the original document. It's effectively the CAA staking their IRS agreement and professional standing on the accuracy of what they've reviewed — which is exactly why the training and vetting process exists in the first place. A CAA who repeatedly submits inaccurate or fraudulent certifications risks having their agreement terminated and can face other consequences.

What a CAA Can Certify — And What Still Needs the IRS Directly

This is one of the more misunderstood parts of the process, so let's separate it clearly.

A CAA can typically:

Review and certify passports for the primary applicant.
Review and certify passports for dependents in most cases under current program rules.
Assist with identifying the correct filing category or exception (standard filing with a return, or Exceptions 1(a), 1(b), 1(d), 2, 3, 4, 5).
Prepare and review the W-7 for completeness and accuracy before submission.
Submit the completed package with the Certificate of Accuracy directly to the IRS ITIN unit.
Communicate with the IRS on the applicant's behalf regarding the status of the application, in many cases.

What generally still needs to go through the IRS directly, or through a Taxpayer Assistance Center, depending on current guidance:

Certain civil documents for dependents (birth certificates in specific scenarios) where CAA certification authority has been more limited historically — always confirm the current rule set with your agent.
Any document type not on the IRS's list of 13 acceptable identification documents.
Cases where the IRS specifically requests the original document be mailed in for additional review, regardless of prior CAA certification.

A responsible CAA will tell you upfront which parts of your specific application they can certify and which parts might still require an original document to be mailed or a TAC visit — if an agent tells you they can certify absolutely everything with no exceptions, that's worth double-checking against current IRS program rules.

How to Verify an Agent Is Actually on the IRS List

Because CAAs handle original identity documents and represent applicants to the IRS, it's worth verifying legitimacy before handing over your passport or personal information. Here's how:

Check the IRS's published list of Acceptance Agents. The IRS maintains a public list of authorized Acceptance Agents and Certifying Acceptance Agents by state and country, updated periodically. A legitimate agent should appear on it (though very recently approved agents may have a short lag before appearing).
Ask for the agent's IRS Acceptance Agent Agreement details — a legitimate CAA will not be cagey about confirming their status; it's a straightforward professional credential they should be able to reference readily.
Confirm they'll issue a Certificate of Accuracy, not just "make copies" of your documents. If an "agent" says they'll photocopy your passport and mail it in as a regular copy without proper certification, that's not how CAA certification actually works and the IRS is likely to reject the application or require the original anyway.
Check for a real business presence — a verifiable business address, professional registration, reviews, and a track record. Legitimate CAAs are frequently also tax preparers, accountants, or attorneys with an established practice, though that's not a strict IRS requirement.
Be cautious of anyone charging IRS filing fees. The IRS itself doesn't charge for filing Form W-7 — agents charge service fees for their own work (review, certification, preparation, submission), which is legitimate, but "IRS processing fee" language framed as a government charge is a red flag phrasing to watch for.

Red Flags of Fake or Unqualified "Agents"

We've seen a lot of applicants come to us after a bad experience elsewhere. Common warning signs:

Asking you to send your passport by unsecured courier or personal mail to an individual rather than through a verifiable business process, with no explanation of how it will be handled, tracked, or insured.
No mention of a Certificate of Accuracy at all — if the person helping you doesn't know what a COA is, they are very likely not an actual CAA.
Guaranteeing approval or a specific turnaround time that ignores current IRS processing realities (nobody, including a legitimate CAA, can force the IRS to process faster than its standard cycle).
Vague or evasive answers when asked which IRS list they're on, or an unwillingness to have you independently verify their status.
Charging unusually low fees with no clear description of what's included, which sometimes correlates with corners being cut on document review, or unusually high fees bundled with unrelated "services" designed to obscure the real cost.
No physical business address or any way to escalate a problem if something goes wrong with your application.
Promising ITINs will help with immigration status, work authorization, or a path to a visa/green card — a legitimate tax professional will be direct that an ITIN has no immigration function whatsoever, and anyone implying otherwise is either misinformed or misrepresenting the process.
Requesting payment only through untraceable methods (cash-only, informal money transfer apps to a personal account with no invoice or receipt).

The Process Walkthrough: What Working With a CAA Looks Like

Step 1: Initial consultation. You describe your situation — why you need an ITIN, what income or filing triggers it, whether dependents are involved. The CAA identifies whether you'll be filing with a return or under a specific exception category.

Step 2: Document collection. You provide your passport (or other acceptable ID combination) and any supporting materials — withholding agent letters for treaty claims, proof of relationship for dependents, prior tax documents if relevant.

Step 3: In-person or authorized review. The CAA physically examines your original document(s), checking for authenticity markers and confirming the details match your W-7 exactly. This is typically done in person, though some CAAs offer video-based review consistent with current IRS allowances — confirm which method your agent uses.

Step 4: Form preparation. The CAA prepares (or reviews, if you drafted it yourself) the W-7, checking every field against your documents — reason for filing, name matching, country codes, visa details, prior ITIN disclosure.

Step 5: Certificate of Accuracy and submission. The CAA completes the COA, assembles the full package (W-7, COA, certified document copies, tax return or exception documentation), and submits it to the IRS ITIN unit.

Step 6: Tracking and follow-up. The CAA monitors for IRS correspondence and follows up with you when the ITIN assignment notice (CP565) arrives, or helps resolve any rejection or request for additional information.

Throughout this, your original passport stays with you the entire time after the review step — it's returned to you immediately, not held or mailed anywhere.

Fees: What CAAs Typically Charge and Why

The IRS doesn't set or cap CAA fees — pricing is set by the individual firm and varies based on complexity (a straightforward Exception 1(d) treaty application is simpler than a multi-dependent household application with foreign civil documents needing translation).

What you're paying for is professional review, certification liability the agent is taking on, form preparation accuracy, and the time saved not mailing your passport internationally and hoping nothing goes wrong. Bizvee's standard ITIN service, for example, runs a flat $225 covering document certification, W-7 preparation, exception category identification, and submission — with tax return preparation quoted separately if you need one prepared alongside the application.

Frequently Asked Questions

Is a CAA the same as an accountant or tax preparer? Not necessarily — a CAA has a specific IRS agreement authorizing document certification for ITIN purposes. Many CAAs are also accountants, enrolled agents, or attorneys, but the CAA designation itself is a separate credential focused specifically on the ITIN process.

Can any tax preparer become a CAA? No — becoming a CAA requires submitting Form 13551, passing a suitability/background check, completing mandatory forensic document training, and executing a formal agreement with the IRS. Not every preparer goes through this process.

Do I have to use a CAA to get an ITIN? No — you can mail original documents directly to the IRS, or visit a Taxpayer Assistance Center that offers in-person document review. A CAA is one of three paths, but for most applicants it's the most practical because you retain your original documents throughout.

Can a CAA guarantee my ITIN will be approved? No legitimate CAA can guarantee IRS approval — what they can do is significantly reduce the chance of rejection by catching errors and document issues before submission, and by correctly matching your situation to the right filing category.

How do I check if someone claiming to be a CAA is legitimate? Check the IRS's published Acceptance Agent list, ask them to confirm their IRS Acceptance Agent Agreement, and confirm they'll provide a proper Certificate of Accuracy rather than just forwarding photocopies.

Can a CAA help with an ITIN renewal, not just a new application? Yes — the same certification process applies whether you're submitting a new W-7 or a renewal; a CAA can certify your current identity document for either.

What happens if a CAA makes a mistake on my certification? The CAA bears professional and IRS-agreement responsibility for the accuracy of their certification. A pattern of inaccurate certifications can lead to the IRS revoking the CAA's agreement, which is part of why the vetting and training process exists — it creates real accountability.

Does using a CAA cost more than mailing documents to the IRS directly? Mailing directly to the IRS has no IRS fee either, but you take on the risk and inconvenience of being without your original passport for weeks, plus a higher chance of a rejection you have to fix without professional review. A CAA charges a service fee for taking that risk and work off your hands and reviewing everything before it's submitted.

This article is for general informational purposes only and is not tax, legal, or immigration advice. Please consult a qualified tax professional about your specific situation.

What Is an IRS Acceptance Agent for ITIN Applications?