How to Become an IRS Certifying Acceptance Agent (CAA): Step-by-Step
A Certifying Acceptance Agent (CAA) is a person authorized by the IRS to help taxpayers apply for an Individual Taxpayer Identification Number (ITIN), by certifying the identity documents that go with Form W-7, the ITIN application, so the applicant does not have to mail original documents to the IRS.
For tax professionals, it is a practical way to add a service clients actually need: many people who must file a U.S. tax return cannot get a Social Security number, and they still need an ITIN. Here is the path, step by step.
Step 1: Complete the forensic training
The IRS requires forensic training in document authentication. This is the course Taxes University sells: you learn to examine the identity documents clients present with Form W-7: passports, driver's licenses, birth certificates, visas and national ID cards, and to tell authentic documents from fraudulent ones.
Taxes University is an IRS vendor, listed by the IRS as an approved forensic-training provider, and the course is available in English and Spanish, online and self-paced, with lifetime access.
Step 2: Receive your forensic-training certificate
After completing the training and its quiz, you receive a digital certificate, followed by a mailed certificate accepted by the IRS for the forensic-training requirement. Keep both: the certificate is part of your CAA application file.
Step 3: Complete the IRS ITIN tax-law training
Separately from the forensic course, the IRS provides its own ITIN tax-law training for acceptance agents. Complete it as the IRS directs, and keep proof of completion with your application materials.
Step 4: Apply to the IRS with Form 13551
This is the step most courses never teach, and the one where applicants get stuck. You submit your CAA application to the IRS on Form 13551, including your forensic-training certificate and your tax-law training completion, through the IRS e-Services process the IRS specifies for acceptance agents.
Step 5: Upload your documents and receive your certificate
Once the IRS processes your application, you upload the supporting documents as instructed and receive your CAA certificate. From that point, you can certify clients' identity documents for their Form W-7 applications.
More than the forensic course
Most CAA courses stop at Step 1: they teach the forensic training and leave you to figure out the application alone. Taxes University does not. The course also walks you step by step through the IRS application itself: how to complete and submit Form 13551, how to upload your documents, and how you receive your certificate, so you go from training to approved Certifying Acceptance Agent without guessing.
Who this is for
This path fits tax preparers, accountants, CPAs and enrolled agents who want to serve clients who need ITINs, including Spanish-speaking clients, for whom a CAA who explains the process in their own language is often the difference between filing and not filing.
Start here
Enroll in the CAA Forensic Training course (English or Spanish) at taxesuniversity.net (the IRS-linked course page is /pages/taxes-university-irs-caa-forensic-training-itin-approved-course) and begin with the forensic training today.