The IRS publishes a straightforward answer to how long an ITIN takes: allow 7 weeks outside of tax season and 9–11 weeks during tax season (January 15 to April 30) or if you applied from overseas. As of April 2026, the IRS is processing Form W-7 applications within 11 weeks of receipt — consistent with peak-season timelines.
But those numbers assume your application is complete, error-free, and submitted correctly. In practice, the majority of delays that push applicants past 11 weeks are caused by specific, preventable factors — not IRS backlog. This guide explains each one and what you can do about it.
The Baseline: What the IRS Timeline Actually Means
When the IRS says “allow 7 weeks,” it means 7 weeks from the date your application is received at the IRS ITIN Operations center in Austin, Texas — not from the date you mailed it. For international applicants, transit time adds to this. A package mailed from Canada, Mexico, or overseas can take 1–2 weeks to arrive, which means the total elapsed time from sending to receiving your ITIN notice is longer than the IRS figure suggests.
The IRS sends one of three notices after processing:
- CP565 — Your ITIN has been assigned. No action needed.
- CP566 — The IRS needs more information. You have a limited window to respond before your application is closed.
- CP567 — Your application was rejected. You must correct and resubmit.
The CP566 and CP567 notices restart the clock entirely. Avoiding them in the first place is the most impactful thing you can do for your timeline.
Factor 1: Time of Year — the Biggest Single Variable
Tax season (January 15 to April 30) is the single largest driver of extended processing times. During these months, the IRS receives millions of filings simultaneously, and ITIN applications compete for processing capacity alongside income tax returns, amended returns, and other correspondence.
The practical difference is significant. An application submitted in November or December typically takes around 7 weeks to process. The same application submitted in February or March may take 11 weeks or longer — and the IRS’s own FAQ currently confirms 11 weeks as the active processing time.
What to do about it: If you have flexibility on timing, submitting in late summer, fall, or early January, before the peak hits, gives you the best chance of a faster timeline. If you have a fixed deadline — a closing date on a property sale, a tax return due date, or a withholding refund you need filed — apply as early as possible and plan around the 11-week window rather than the 7-week one. How long ITIN applications actually take by submission method provides more detail on timing.
Factor 2: Applying from Outside the United States
The IRS explicitly calls out overseas applications as a reason for the longer 9–11 week timeline, and for good reason: international mail adds transit time in both directions. Your application takes longer to reach Austin, and your original documents take longer to be returned.
Beyond transit time, international applications also face a higher risk of documents being damaged, lost, or delayed in customs. If original documents are not returned within 60 days, you must contact the IRS — and if they cannot locate them, you are back to gathering new originals.
What to do about it: This is the strongest practical argument for using an IRS-authorized Certifying Acceptance Agent (CAA). Applying without mailing your passport eliminates the risk of overseas mail entirely — the CAA certifies copies locally and submits them directly on your behalf, with no international document transit involved.
Factor 3: Documentation Errors — the Most Common Cause of Preventable Delays
Documentation problems are responsible for more ITIN delays than any other single factor. These are the specific issues that trigger a CP566 (information request) or CP567 (rejection):
Documentation problem
Why it causes delay
Name on Form W-7 doesn’t match passport exactly
The IRS cannot confirm identity — triggers a CP566 or CP567
Expired identity document
Rejected outright — all documents must be current at submission
Notarized copy submitted instead of certified copy
Notarized copies are never accepted — must resubmit with originals or CAA-certified copies
Only the photo page of passport submitted
All relevant pages must be included
Second document doesn’t prove foreign status
If not using a passport, the document combination must collectively prove both identity and foreign status
Wrong exception claimed
If you claim an IRS exception without the required supporting documentation, the application is rejected
Each of these errors sends the application back and restarts the timeline at zero. What documents you need for an ITIN application covers every accepted document type and its requirements in detail.
Factor 4: Form W-7 Errors
The form itself is a common source of delays that applicants don’t anticipate because the errors can be subtle:
Wrong reason box: Form W-7 has eight reason boxes (a through h). Checking the wrong one — or checking a box that doesn’t match your supporting documentation — triggers review and often rejection. The reason box must match both your situation and the attached tax document or exception documentation precisely. The line-by-line guide to completing Form W-7 covers every field and what each reason box requires.
Missing signature: An unsigned Form W-7 is invalid. It is returned immediately — not processed. This is one of the most common single-field errors.
Using an outdated version: The IRS requires the current revision of Form W-7 (December 2024). Prior versions are rejected. Always download directly from irs.gov before submitting.
Blank fields: The IRS instructions specify that fields that do not apply should be marked “N/A” — not left blank. Blank fields can trigger a CP566 requesting clarification.
Factor 5: Missing or Incomplete Tax Return
In most cases, a completed and signed U.S. tax return must be attached to the Form W-7 application. The return is what establishes your tax purpose — without it, the IRS has no basis for issuing the ITIN, and the application is rejected.
Common tax return problems that cause delays:
- The return is unsigned — both spouses must sign a joint return; a nonresident filing Form 1040-NR must sign
- The return is incomplete — missing schedules, blank income sections, or omitted attachments
- The return is not attached at all — submitted separately or mailed to a different IRS address
- The wrong return type is used — e.g., a resident Form 1040 submitted when a nonresident Form 1040-NR is required
The Form W-7 must be placed on top of the tax return in the submission package. Reversed order — return on top, W-7 underneath — can slow processing during heavy filing periods because IRS intake teams look for the W-7 first.
If you qualify for one of the five IRS exceptions that allow an ITIN application without a tax return, the exception documentation requirements must be met exactly — the wrong exception claimed, or a missing letter from a withholding agent, produces the same rejection outcome as a missing return.
Factor 6: Applying Too Close to a Deadline
Many applicants discover they need an ITIN only when a deadline is approaching — a property closing, a tax return due date, or a withholding certificate application. Applying at this point puts the outcome out of your control.
Specific situations where late applications create compounding problems:
FIRPTA property sales: An ITIN is required for Form 8288-A (withholding statement) and Form 8288-B (withholding certificate application). A Form 8288-B filed before closing can reduce how much is withheld at closing — but the IRS takes approximately 90 days to process it. Applying for an ITIN at the same time, during tax season, with an 11-week processing window, means the ITIN may not arrive before the Form 8288-B decision is needed. What you need before selling U.S. property explains the sequence of events in the context of a real estate transaction.
Tax return deadlines: If you need an ITIN to file your Form 1040-NR by June 15, applying in May leaves essentially no margin for error. If the application needs any correction, your return will be late. Applying in February or March — even during tax season — is better than in May.
Rental income reporting: Non-U.S. residents with U.S. rental income who make the Section 871(d) election need an ITIN before that election can be filed. Delays in obtaining an ITIN can delay the election, which can delay the application of deductions to their return.
Factor 7: Applying for Multiple Family Members
When multiple family members need ITINs — a property-owning couple, or parents plus dependents — each person requires their own separate Form W-7. All forms must be submitted together in a single package attached to a single tax return.
Delays occur when:
- Forms for different family members are sent in separate packages (they may be processed independently, creating mismatched records)
- Dependent documentation requirements are not met — dependents have stricter rules than primary applicants, particularly around proof of U.S. residency and the passport date-of-entry requirement
- A CAA certifies the primary applicant’s documents but cannot certify certain dependent documents (foreign military IDs, for example, must still be mailed as originals)
How to Check Your Application Status
If 7 weeks have passed (11 weeks during tax season or for overseas applications) and you have not received a notice, contact the IRS directly:
- From inside the United States: Call 1-800-908-9982
- From outside the United States: Call +1-267-941-1000 (not toll-free)
Have ready: your full name as it appears on Form W-7, your mailing address, your date of birth, and a copy of your Form W-7 if available. If you applied through Nolly as a CAA, Nolly can check your application status on your behalf.
The Fastest Route: What Consistently Shortens the Wait
Based on the factors above, these actions have the most consistent impact on reducing processing time:
- Apply outside of tax season when possible — the difference between a 7-week and 11-week timeline is real
- Use a CAA — eliminates overseas mail delays, reduces documentation errors through pre-submission review, and removes passport transit risk
- Use the current Form W-7 downloaded from irs.gov immediately before applying
- Match every field to your documents — name, date of birth, and country of citizenship must be identical across Form W-7 and all submitted documents
- Attach a complete, signed tax return unless you clearly qualify for a documented exception
- Apply early relative to any deadline — build in the full 11-week window plus transit time
Frequently Asked Questions
Can I pay to expedite my ITIN application?
No. The IRS does not offer an expedited or priority processing service for ITIN applications. There is no fee that accelerates IRS processing time. The fastest legitimate route is a complete, error-free application submitted outside of peak season through a CAA.
What if I receive a CP566 notice requesting more information?
Respond as quickly as possible with the requested documents. The IRS gives you a limited window to respond — typically 45 days from the date of the notice — before the application is closed and you must start over. Read the notice carefully: it will specify exactly what is missing or unclear.
Does applying through a CAA make the IRS process faster?
The IRS processes all applications through the same pipeline regardless of submission method. However, CAA-submitted applications arrive with documentation already certified and reviewed — meaning they are less likely to generate CP566 or CP567 notices, which is where most real delays occur. Fewer correction cycles mean faster outcomes in practice, even if the IRS’s internal processing timeline is the same.
My ITIN application was rejected — how long does a resubmission take?
A corrected resubmission goes through the same processing timeline as a new application — 7 to 11 weeks from receipt, depending on timing. There is no expedited queue for corrected applications. Why ITIN applications get rejected and how to fix them covers each reason for rejection and what to correct before resubmitting.
Apply Through Nolly and Reduce Your Risk of Delays
Nolly (U.S. Tax Recovery Inc.) is an IRS-authorized Certifying Acceptance Agent based in Toronto, Canada. Nolly reviews every Form W-7 field, certifies your identity documents, prepares the supporting tax return where required, and submits your complete application, without you mailing your original passport. Catching documentation errors before submission is the single most effective way to avoid the delays described in this guide.
Sources
All factual claims in this article are sourced from official IRS publications:
