How to Get an ITIN — and Why Bizvee Is an IRS Acceptance Agent

How to Get an ITIN: Step-by-Step with a Certifying Acceptance Agent

Getting an ITIN sounds simple on paper: fill out one form, attach some documents, mail it in. In practice, the IRS rejects a meaningful share of W-7 applications every year for avoidable reasons — an unsigned form, an expired passport copy, a missing treaty article number, a name that doesn't match across documents. Each rejection costs you weeks, sometimes months, especially during filing season when processing already runs long.

We've filed hundreds of these applications as a Certifying Acceptance Agent (CAA), and this guide walks through the process exactly the way we do it internally: line by line on the form, document by document, with the real reasons applications get bounced back and how to avoid them.

Before You Start: Confirm You Actually Need One

Don't file a W-7 speculatively. The IRS wants to see either:

1. A valid federal tax return attached to the application, or
2. Qualification under one of the exception categories (1(a), 1(b), 1(d), 2, 3, 4, 5) with the appropriate supporting documentation instead of a return.

If neither applies yet, hold off. Filing early "just in case" is one of the more common reasons applications get rejected outright.

Form W-7, Line by Line

Here's the form broken down section by section, with the specific mistakes we see most often.

Reason for submitting Form W-7 (boxes a through h)

This is the first thing IRS reviewers check, and it has to match your supporting documents exactly.

• (a) Nonresident alien required to obtain ITIN to claim tax treaty benefit — used with Exception 1(d) situations, must be paired with the treaty country and article number filled in further down the form.
• (b) Nonresident alien filing a US tax return — the standard case for someone filing 1040-NR with US-source income.
• (c) US resident alien (based on days present) filing a US tax return.
• (d) Dependent of a US citizen/resident alien — requires proof of relationship and, for dependents outside the US/Canada/Mexico, additional residency documentation in many cases.
• (e) Spouse of a US citizen/resident alien.
• (f) Nonresident alien student, professor, or researcher filing a return or claiming an exception.
• (g) Dependent/spouse of a nonresident alien holding a US visa.
• (h) Other — used for less common reasons, including Exception 5 filers like foreign owners of disregarded entities reporting under Form 5472, or FIRPTA-related Exception 4 filers. If you check (h), you must write in the specific reason — leaving this blank is an automatic rejection.

Check only one box unless the instructions specifically allow more than one (certain treaty + dependent combinations do).

Line 1a/1b — Name

Enter your name exactly as it appears on the identification document you're submitting. If your passport shows a middle name and your tax return doesn't, that's a mismatch worth resolving before submission — either by using the full legal name consistently or by explaining the discrepancy. This single issue causes more rejections than almost anything else on the form.

Line 2 — Applicant's mailing address

Where the IRS will send your ITIN assignment letter (CP565) or any rejection notice. Use an address where you can reliably receive mail for the next several months — international mail delays are common, and if this address changes mid-process, you could lose track of your case.

Line 3 — Foreign address

Required even if you have a US mailing address on Line 2, unless Line 2 is your foreign home address. Don't leave this blank if you live outside the US.

Line 4 — Birth information

Country of birth must match your passport or birth certificate exactly, including how the country's name is written (some applicants use a former or informal country name that doesn't match current IRS country codes).

Line 5 — Gender

Straightforward, but occasionally overlooked entirely — an unanswered field triggers a request for more information.

Line 6a-6g — Additional details

This includes country of citizenship, foreign tax ID number (if any), visa information (if applicable, including visa number and expiration), and, critically, 6d: identification document(s) submitted. This must list the exact document type, issuing country, ID number, and expiration date — and it has to match the physical document you actually attach.

Line 6e/6f — Prior ITIN or IRS number

If you or someone helping you believes you may have been issued a number before (even one you don't remember using), check yes and list what you know. Filing as "new" when a number already exists causes processing delays and sometimes duplicate-number complications that take much longer to unwind than getting it right the first time.

Signature

Must be signed and dated by the applicant (or a parent/legal guardian for a dependent under 18, or someone holding valid power of attorney in limited circumstances). An unsigned W-7 is rejected without any substantive review — it doesn't even get to the document-checking stage.

Supporting Documents: What the IRS Actually Accepts

The IRS maintains a list of 13 acceptable documents to prove identity and foreign status. A passport is the only standalone document that proves both identity and foreign status by itself — every other document has to be paired with something else, or only proves one or the other.

Commonly used documents besides a passport:

• National identification card (must show photo, name, current address, date of birth, and expiration date)
• US Citizenship and Immigration Services (USCIS) photo ID
• Visa issued by the US Department of State
• US driver's license
• Foreign driver's license
• US state identification card
• Foreign voter's registration card
• Civil birth certificate (required for dependents under 18 in most cases, and for anyone without a passport)
• Medical records (dependents under 6 only)
• School records (dependents under 18, in some cases up to 24 if a student)

For dependents, birth certificates plus proof of US residency (school records, medical records, or similar) are often required in addition to identity documents, depending on the applicant's country.

Certification Options: The Part That Actually Saves You Time and Risk

This is where most people get stuck, and it's the part we specialize in.

You have three ways to submit identity documents with your W-7:

1. Mail original documents to the IRS. You send your actual passport (or other original ID) to the IRS Austin Service Center along with your W-7 and return. The IRS will mail it back, generally within 60 days, but delays happen, especially during peak season, and losing your original passport in transit — even briefly — is a real risk if you need it for travel in the meantime.

2. Visit an IRS Taxpayer Assistance Center (TAC) in person that offers ITIN document review by appointment. TACs can verify original documents on the spot so you never have to mail them, but availability is limited, appointments book out weeks in advance, and not every TAC location supports this service — some only accept walk-ins with severe restrictions.

3. Use a Certifying Acceptance Agent (CAA). A CAA is authorized by the IRS to review your original documents in person (or via authorized video review in some cases), verify them, and submit a Certificate of Accuracy along with the application. This means you keep your original passport the entire time — it never leaves your hands — because the CAA has been trained and authorized to certify a copy instead of forwarding the original.

For most applicants, option 3 is the practical choice: no mailing your passport internationally, no gambling on TAC appointment availability, and a professional review of your documents before submission that catches problems before the IRS ever sees them.

Exception 1(d) and Treaty Attachments: What Has to Be Included

If you're applying under Exception 1(d) to claim a tax treaty benefit, the IRS wants to see a clear paper trail proving the income is real and treaty-eligible:

• A letter from the withholding agent (the US payer) on their letterhead, stating the type of income, the amount, and confirming they require your ITIN to properly withhold at the treaty rate rather than the default 30%.
• A completed Form W-8BEN (for individuals) identifying the treaty country and the specific treaty article and paragraph being claimed.
• Correct citation of the treaty article — this has tripped up plenty of otherwise solid applications where the wrong article number was used, especially for royalty versus independent personal services articles, which differ by country.
• No tax return is required to be attached under this exception, but the supporting letter must be original or a certified copy, not just referenced.

For Exception 5 filers reporting foreign ownership of a US disregarded entity (Form 5472 / pro forma 1120), attach a copy of the return package the ITIN will be used with, along with a cover statement explaining the reporting requirement.

Timelines: What to Realistically Expect

• Standard processing: About 7 weeks from the date the IRS receives a complete application.
• Peak season (mid-January through April, plus around extension deadlines): 9–11 weeks is common; don't assume the standard timeline holds.
• Applications filed from overseas or through certain exception categories: Can run longer, sometimes 11+ weeks, due to additional review steps.
• CAA-submitted applications: The certification and internal review by the CAA typically takes a few days to a couple of weeks depending on complexity, plus the IRS's own processing time once submitted — the CAA step doesn't shorten IRS processing, but it substantially reduces the chance of a rejection that would restart the clock.

Tracking Your Application

Once submitted, you generally can't track a W-7 online the way you can track an amended return. Practical options:

• Call the IRS ITIN unit directly at their dedicated phone line after the standard processing window has passed (calling before 7 weeks is generally not productive — they won't have anything to report).
• Check your CAA's internal tracking if you applied through one — a good CAA will follow up proactively rather than making you chase them.
• Watch your mail for either a CP565 (ITIN assignment notice) or a rejection/request for additional information — these come by physical mail, not email or online portal.

Common Rejection Reasons and How to Fix Them

Costs: What You're Actually Paying For

The IRS does not charge a fee to file Form W-7 itself. Costs come from everything around it:

• Passport/ID renewal, if needed, at your country's standard rate.
• Certified translations, if your civil documents aren't in English.
• Notary or apostille fees, in limited cases some foreign documents require this before submission.
• CAA service fees, which cover document review, certification, form preparation, and submission — this is where most applicants' actual out-of-pocket cost comes from, and it varies significantly by provider and complexity.
• Return preparation fees, if you need a 1040-NR or other return prepared to accompany the W-7 and don't already have one done.
• Courier/mailing costs, if you go the mail-original-documents route and want tracked, insured shipping (strongly recommended if you do choose that path).

Why Use a CAA Instead of Mailing Your Passport

We hear this question constantly, so let's be direct about the tradeoffs:

• You keep your passport. No 60-day window without your primary travel document, no risk of it getting lost in international mail, no scrambling if you suddenly need to travel.
• Documents get checked before submission, not after. A trained CAA reviews your ID, your form, and your supporting documents for exactly the mismatches listed in the rejection table above, before anything goes to the IRS. Catching a name mismatch or missing treaty letter before submission saves the 7-11 week processing cycle you'd otherwise lose to a rejection and resubmission.
• A CAA issues a Certificate of Accuracy (Form W-7 COA) that gets submitted with your application, giving the IRS confidence the identity documents were properly verified by an authorized third party.
• CAAs are trained specifically on forensic document review as part of their IRS certification, including recognizing altered or fraudulent documents — this training is part of why the IRS extends them the authority to certify copies in the first place.
• You get a single point of contact for the whole process, including help identifying the correct exception category and supporting letters, rather than trying to interpret IRS instructions and exception rules on your own.

Bizvee's ITIN Service

We handle ITIN applications as a Certifying Acceptance Agent, with a flat fee of $225 that covers:

• Document review and IRS-authorized certification of your passport or acceptable ID (you never have to mail your original)
• W-7 preparation, checked line by line against your documents and filing scenario
• Identification of the correct filing category or exception (including Exception 1(d) treaty claims and Exception 5 for LLC owners)
• Assembly of required supporting letters and attachments
• Submission with our Certificate of Accuracy
• Tracking and follow-up until you receive your ITIN assignment or any IRS correspondence

If you also need a US tax return prepared (1040-NR, or the disregarded-entity 1120/5472 package), that's handled as a separate, clearly quoted service — we don't bundle surprise fees into the ITIN process.

Frequently Asked Questions

Can I apply for an ITIN online? No. The IRS does not offer a fully online W-7 submission process. You must mail the application (with either original documents, certified copies from a CAA, or in-person TAC verification), or apply in person at a TAC.

How long does it take to get an ITIN once I submit? Roughly 7 weeks under standard conditions, 9–11 weeks or more during peak filing season or for applications requiring extra review.

Do I need a US tax return to apply? In most cases, yes — a valid federal return must be attached. Exceptions 1(a), 1(b), 1(d), 2, 3, 4, and 5 allow you to apply without a return if you have the specific required supporting documentation instead.

Can a CAA certify documents for my dependents too? Yes, in most cases — CAAs can generally certify passports for dependents. Birth certificates for dependents typically still need to go through the IRS directly or a Taxpayer Assistance Center in certain circumstances, depending on current IRS rules, so check with your CAA about which specific dependent documents they can certify.

What happens if my W-7 is rejected? The IRS sends a notice explaining the reason. You correct the issue and resubmit — but you're back at the start of the processing queue, which is why catching problems before submission matters so much.

Is $225 the total cost, or are there hidden fees? At Bizvee, $225 covers the ITIN application and certification process as described above. Tax return preparation, translations, or other add-on services are quoted separately and clearly before any work begins.

Can I use my ITIN application to also apply for an EIN for my LLC? No — these are separate applications with separate purposes. An EIN for your business entity is obtained via Form SS-4 and doesn't require you to have an ITIN first.

Do children need to apply in person? Not necessarily — a CAA can often handle the certification for a dependent's passport without requiring an in-person IRS visit, but always confirm what's needed for the specific supporting documents your dependent's application requires.

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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.