By mail, an ITIN takes about 7 weeks from the day the IRS receives your Form W-7 — stretching to 9-11 weeks during peak season (January 15 to April 30) or when you apply from outside the United States. Going through a Certified Acceptance Agent (CAA) does not change IRS processing time, but preparation and document verification take only 5-10 business days and your passport never gets mailed. There is no same-day or expedited ITIN through any channel.
Here is what those numbers look like in practice, week by week, and what to do when the clock runs long.
Official IRS Timelines at a Glance
| Route and situation | IRS processing time |
|---|---|
| Mail, from inside the U.S., off-peak (May 1 - Jan 14) | ~7 weeks |
| Mail, peak season (Jan 15 - Apr 30) | 9-11 weeks |
| Mail, from abroad (any season) | 9-11 weeks |
| Through a CAA | 5-10 business days preparation + the IRS times above |
| TAC in-person verification | Appointment wait + the IRS times above |
Note what is not on this table: an expedited lane. The IRS does not sell faster processing, and no third party can buy it. If you are still choosing a route, the fast ITIN application guide compares all three in detail.
Week by Week: What Happens After You Mail a W-7
Weeks 0-1 — Transit and intake. Your package (W-7 + federal tax return + identity documents, or a CAA's Certificate of Accuracy) travels to the ITIN Operation in Austin, TX and enters the intake queue. Nothing is trackable yet beyond your postal tracking number.
Weeks 1-4 — Review. An ITIN examiner checks the reason box, identity documents, and the attached return. Most CP566 ("we need more information") and CP567 (rejection) decisions originate here.
Weeks 4-7 — Assignment and notice. Clean applications get an ITIN assigned, and notice CP565 is printed and mailed. If you submitted original documents, they are returned separately — typically within 60 days of submission.
Week 7+ — The return is processed. The IRS writes your new ITIN onto the attached tax return and routes it into normal return processing. Any refund clock starts here, not when you mailed the package.
In peak season, every stage stretches: intake queues grow with filing-season volume, and the same pipeline takes 9-11 weeks.
What Slows Applications Down
- Peak-season volume. Applications received January 15 through April 30 compete with millions of tax returns.
- Applying from abroad. International mail plus extra verification pushes processing to 9-11 weeks.
- A CP566 notice. Missing or inconsistent information triggers a request for more documents. You get 45 days to respond, then the application re-enters processing — realistically 2-3 extra months.
- A CP567 rejection. Common causes: no tax return attached and no exception claimed, expired or uncertified documents, name mismatches, a blank reason box, a missing foreign address, or signing errors. A rejection means starting over from week zero. The W-7 line-by-line walkthrough covers how to avoid every one of these.
- Lost or delayed original documents. Mailed passports occasionally sit in processing; this is the risk the CAA and TAC routes eliminate.
How to Check Your Status
There is no online ITIN tracking tool — the only status channel is the phone:
| Where you are calling from | Number | When to call |
|---|---|---|
| Inside the U.S. | 1-800-829-1040 | After 7 weeks |
| Outside the U.S. | +1-267-941-1000 | After 7 weeks (9-11 if you applied from abroad or in peak season) |
Have ready: a copy of your Form W-7, the date you mailed it, your identity document details, and the name and address exactly as written on the application. The agent can confirm receipt, processing status, and whether a CP565, CP566, or CP567 has been issued. A fuller script for these calls is in how to track your W-7 application.
It Has Been More Than 11 Weeks — Now What?
- Call the IRS at the numbers above. Ask three specific questions: Was the application received? Is it in processing or suspended? Has any notice been mailed?
- Check your mail trail. CP566 notices get lost; if one was issued and you never responded, the 45-day window may have lapsed and the application may have been closed.
- If the IRS has no record of the application, resubmit the complete package — there is no way to "reattach" to a lost submission.
- If documents are stuck, ask the agent to open a document-return inquiry; original documents should come back within about 60 days of submission.
Does the Route Change the Timeline?
| Factor | Mail it yourself | CAA (e.g., itin.net) | TAC appointment |
|---|---|---|---|
| Preparation and verification | Self-prepared, no pre-check | 5-10 business days, application reviewed before submission | You prepare; IRS verifies documents at appointment |
| Passport | Mailed to IRS and back | Stays with you (Form W-7 COA attached instead) | Returned at the appointment |
| IRS processing | ~7 weeks (9-11 peak/abroad) | Same | Same |
| Rejection risk | Highest — errors found only after 7 weeks | Lowest — errors caught before filing | Medium — documents checked, but return/W-7 consistency is not reviewed |
The honest framing: no route shortens the IRS's own clock. The CAA route shortens your total expected time by removing the failure modes — a single CP566 cycle costs more time than every preparation step combined. itin.net, an IRS-Certified Acceptance Agent, prepares and verifies applications in 5-10 business days for $497 (new) or $397 (renewal), with a 100% money-back guarantee.
Tax-Deadline Planning: Filing With a W-7 Pending
You do not need the ITIN before the filing deadline. The W-7 and the federal return are filed together as one package, so the return is considered timely if the package is postmarked by the deadline — even though the ITIN itself arrives about 7 weeks later. The IRS assigns the ITIN first, writes it on your return, then processes the return.
Plan backward from what the ITIN unlocks. If you need the number for opening a U.S. bank account or other paperwork, count 8-13 total weeks from the day you start. And if your existing ITIN went unused on a federal return for 3 consecutive years, it expired on December 31 of that third year — renew before filing season using the steps in ITIN renewal: when and how. If you are not sure an ITIN is even the right number for your situation, start with EIN vs ITIN: which do you need.
Frequently Asked Questions
How long does it take to get an ITIN in 2026?
About 7 weeks from when the IRS receives your Form W-7, or 9-11 weeks during peak season (January 15 to April 30) or when you apply from outside the United States.
Is there a way to get an ITIN faster?
You cannot speed up IRS processing itself — there is no expedite fee and no same-day ITIN. A Certified Acceptance Agent prepares and verifies your application in 5-10 business days and prevents the rejections and CP566 cycles that add months to the total.
When should I check my ITIN application status?
After 7 weeks. Call the IRS at 1-800-829-1040 from inside the U.S. or +1-267-941-1000 internationally. There is no online ITIN tracking tool.
Why is my ITIN taking longer than 7 weeks?
Peak-season volume (January 15 to April 30), applying from abroad, document problems, or a CP566 notice requesting more information all extend the timeline to 9-11 weeks or beyond.
What letter does the IRS send when an ITIN is approved?
Notice CP565 confirms your ITIN was assigned. CP566 means more information is needed (respond within 45 days), and CP567 means the application was rejected.
Does applying through a CAA make the IRS process my ITIN faster?
IRS processing time is the same, but the CAA route is faster end-to-end: preparation and document verification take 5-10 business days, your passport is never mailed to the IRS, and pre-checked applications avoid the CP566/CP567 delays that add 2-3 months.
Can I file my tax return while my ITIN is pending?
The W-7 and the tax return are filed together as one package, so the return is considered filed on time if the package is postmarked by the deadline — even though the ITIN takes about 7 weeks to be assigned.
What should I do if my ITIN has taken more than 11 weeks?
Call the IRS at 1-800-829-1040 (U.S.) or +1-267-941-1000 (international) with a copy of your W-7, your mailing date, and your identity document details. The agent can confirm whether the application was received, whether it is suspended, and whether a notice was issued.
Do IRS Taxpayer Assistance Centers issue ITINs on the spot?
No. TACs verify your documents in person by appointment (844-545-5640), which means you keep your originals, but the application still goes through standard IRS processing of about 7 weeks.
