Updated
CAA vs Regular Acceptance Agent: Which Should You Use for Your ITIN in 2026?
What Are the 3 Ways to Submit an ITIN Application?
- DIY mail to IRS. Applicant prepares Form W-7, mails original passport (or alternative documents) to the IRS ITIN Operations unit in Austin, TX. The IRS holds the documents for 7 to 11 weeks before returning them.
- Acceptance Agent (AA). AA helps prepare Form W-7 but cannot certify documents. Applicant still mails originals to the IRS or visits an IRS Taxpayer Assistance Center (TAC) for in-person document verification.
- Certifying Acceptance Agent (CAA).CAA verifies originals locally, signs a Certificate of Accuracy, and submits certified copies to the IRS. Originals never leave the applicant's hands.
For the dedicated comparison, see the CAA vs Acceptance Agent page.
How Do CAA, AA, and DIY Compare on Cost, Speed, and Risk?
| Dimension | DIY mail | AA (preparer only) | CAA |
|---|---|---|---|
| Fee | $0 IRS fee + postage | $100-$300 prep fee | $297 flat |
| Mail passport to IRS | Yes | Yes | No - stays with you |
| Rejection rate | 12-25% | 5-12% | <2% |
| IRS processing window | 7-11 weeks | 7-11 weeks | 7-11 weeks |
| Document risk | High (lost passport) | High | Low (originals stay home) |
| Resubmission help | None | Limited | Included |
Why Do Most Non-Resident Applicants Choose a CAA?
- Passport stays home. Non-residents abroad cannot afford to mail their passport to the US for 7+ weeks. CAAs eliminate that risk.
- Lower rejection rate. Industry data shows CAA applications are rejected at under 2 percent vs 12-25 percent for DIY filings.
- Single point of contact. One firm handles preparation, certification, submission, and any IRS follow-up.
- Predictable cost. Flat-fee CAAs avoid the hidden costs of failed DIY (passport replacement, second application, lost time).
- IRS preference. The IRS processes CAA packets through a dedicated channel that pre-validates documents.
For the canonical CAA reference, see the Certifying Acceptance Agent page.
When Is a Regular Acceptance Agent (Not a CAA) Acceptable?
A regular AA is acceptable when the applicant is in the United States and can visit an IRS Taxpayer Assistance Center (TAC) in person to verify documents on the spot. The AA helps prepare Form W-7, the applicant takes the form and documents to the TAC, and the TAC officer verifies originals during the visit. This workflow keeps the original in the applicant's hands but requires a TAC appointment (often booked 4 to 8 weeks out) and travel to the TAC location.
How Do You Verify That a CAA Is Real and IRS-Authorized?
- Ask for the firm's 10-digit CAA Office Code. The IRS issues this on the Form 13551 acceptance letter.
- Cross-check the firm against the IRS Acceptance Agent Program list published on irs.gov.
- Confirm the firm signs a Certificate of Accuracy (Form W-7 COA) - a regular AA cannot.
- Check that the engagement letter promises certified copies, not originals, to the IRS.
- Verify the flat-fee structure includes IRS resubmission if the packet is rejected for a CAA-controlled reason.
When Should You Choose itin-number.com as Your CAA?
Choose itin-number.com when you want a single flat fee of $297, document certification without ever mailing your passport, full Form W-7 preparation, IRS submission, and resubmission support included. Average turnaround is 7 days from document receipt to packet submission, after which the IRS 7 to 11 week processing window begins. WhatsApp support is available 7 days a week.
Frequently Asked Questions About CAA vs Acceptance Agent
A Certifying Acceptance Agent (CAA) is an individual or business authorized by the IRS to verify identity and foreign status documents for ITIN applicants. The CAA examines your original passport in person, completes a Certificate of Accuracy (Form W-7 COA), and submits only certified copies to the IRS. This means you never have to mail your original passport or other identity documents to the IRS ITIN Operations center in Austin, Texas.
A regular Acceptance Agent (AA) can help prepare Form W-7 but cannot certify documents. The applicant must still mail original passports to the IRS. A Certifying Acceptance Agent (CAA) has additional IRS authorization to certify documents, meaning originals stay with the applicant. The difference is the document handling step: AA = mail originals to IRS; CAA = certify locally and mail copies only.
A CAA pre-checks Form W-7 for completeness, verifies documents against IRS standards, signs the Certificate of Accuracy, and submits the packet directly through the IRS CAA channel. The result is dramatically lower rejection rates. The IRS rejects roughly 12 to 25 percent of self-prepared applications versus less than 2 percent of CAA-prepared applications, based on industry reporting.
CAA fees in 2026 range from $197 at the low end to $500 or more at large firms. itin-number.com charges a flat $297 with no add-on fees: passport certification, Form W-7 preparation, IRS submission, mail handling, and CAA Certificate of Accuracy are all included. Some firms charge separately for each step, so always ask for the all-in price.
The IRS requires in-person examination of original identity documents at the time of certification. However, "in-person" can include secure video conferencing combined with mailing originals to the CAA for verification. A pure remote process without ever handling the original document is not IRS-compliant. itin-number.com uses a secure courier-and-verify workflow that meets the in-person standard.
The primary document is a valid passport, which is the only document that proves both identity and foreign status. Alternatives are a combination of two documents from the IRS-approved list (national ID card, US visa, US driver license, foreign driver license, civil birth certificate, school records for dependents under 18, medical records, etc.). A CAA verifies each document against the IRS standard and certifies the copy.
Ready to apply with a Certifying Acceptance Agent? Start your ITIN application — $297 flat, ready in 7 days.