Mateo sold his Miami condo last spring. The sale went through without a hitch — until he noticed the buyer had held back 15% of the price and sent it straight to the IRS. To claim most of that money back, he has to file a U.S. tax return. And before he can file, he needs an ITIN — the Individual Taxpayer Identification Number the IRS issues to people who aren’t eligible for a Social Security Number. Now he’s watching the calendar, wondering whether his refund lands this year or the next.
If you’re in Mateo’s shoes, the question is simple: how long does this take?
| Quick Answer:
A cleanly prepared ITIN application takes roughly 7 weeks outside of tax season and about 9 to 11 weeks during the January-to-April rush, based on current IRS guidance. Filing from outside the U.S., or slipping up on Form W-7, can push it past four months. The one thing you control is accuracy — a correct application skips the rejections and IRS “suspense” letters that quietly add months. |
How long does an ITIN take in 2026?
Form W-7 is the ITIN application. The IRS says a complete one takes about 7 weeks in normal periods. During peak season — roughly mid-January through the end of April — that stretches to 9 to 11 weeks. Send it from abroad and you add mailing time in both directions on top.
| When you apply | Typical IRS processing | Plan for |
|---|---|---|
| Off-season (about May–December) | Around 7 weeks | A little faster for a flawless file |
| Peak season (mid-January–April 30) | 9 to 11 weeks | Longer when the backlog is heavy |
| From outside the U.S. | Add 2–4 weeks each way | Mailing time in both directions |
One detail trips people up: the IRS works applications first-in, first-out, and mailed envelopes often aren’t opened until around week six or seven. So the clock starts when your package lands in Austin — not the day you post it. These ranges are the IRS’s own and shift year to year, so confirm the current figures before you bank on a date.
What counts as ITIN “peak season,” and why it matters
Peak season is the U.S. tax filing rush, mid-January through mid-April, when millions of returns — and the ITIN applications stapled to them — hit the IRS at once. Volume climbs, and everyone in the queue waits longer.
The lesson for Mateo is timing. File during the quieter summer or autumn months and he’ll likely see his ITIN weeks sooner than someone who files in March. Same paperwork, very different wait — purely because of when it lands.
Why do some ITINs take four months or more?
Almost always, it isn’t the IRS being slow. It’s the application.
When something on the Form W-7 is wrong or missing, the IRS doesn’t quietly fix it. It rejects the application or drops it into “suspense” and mails a letter — often a CP567, the ITIN rejection notice — asking you to start over. That restarts the entire clock. And if it happens during peak season, a nine-week wait can balloon into five months.
The usual culprits we see:
- The wrong “reason for applying” box on the W-7, or a reason that doesn’t match the documents.
- Supporting ID that doesn’t meet the IRS standard, or a certification done the wrong way.
- A tax return that should be attached but isn’t — or one attached when an exception applied.
- A missing treaty article number for applicants claiming a treaty benefit.
- Renewals filed as if they were brand-new applications.
Every one of these is avoidable. Working out which reason code and which documents your situation calls for is exactly the kind of thing we untangle every day.
How do you actually get your ITIN faster?
There’s no official IRS “expedite” button. What there is: control over accuracy and timing.
Apply off-season if your deadline allows. File it right the first time. Match your reason code to your facts. Attach the correct return or exception evidence. Certify your identity documents through a route the IRS accepts. Do those five things and you skip the rejection loop that costs most people their weeks.
This is where experience earns its keep. Over 13 years, ITINCAA has prepared and coordinated thousands of ITIN and Form W-7 packages — for foreign spouses and dependents, nonresident investors, students, and business owners from the UK, Mexico, India, and beyond. We’ve learned the small errors the IRS flags before it flags them, and we build the file so it clears on the first pass. Fewer rejections, less waiting.
For Mateo, that means his ITIN and his Form 1040NR — the U.S. nonresident return — move together, so the refund he’s owed isn’t held hostage by a preventable mistake. Need help with the return itself? That’s our core work; see how we handle nonresident filings at itincaa.com.
Key takeaways
- Off-season ITINs take about 7 weeks; peak season (mid-January to April) runs 9 to 11 weeks, per current IRS guidance.
- Applying from outside the U.S. adds mailing time each way — plan for it.
- Most long delays come from a rejected Form W-7, not IRS speed.
- Timing and accuracy are the two levers you control. Use both.
Frequently asked questions
How long will Mateo wait if he applies in March versus September?
Roughly 9 to 11 weeks in March, during peak season, versus about 7 weeks in September, when volume is lower. Same forms — the difference is purely the calendar. If his deadline allows, the quieter months are the smarter time to file.
Can Mateo do anything to speed up his ITIN?
There’s no official IRS expedite service. The fastest route is a flawless Form W-7 filed outside peak season, with the right reason code and correct supporting documents. Accuracy is the closest thing to a shortcut.
What happens if the IRS rejects the W-7?
The IRS mails a rejection notice — often a CP567 — and the process starts over from scratch. During peak season, that can turn a two-month wait into four or five. It’s the main reason getting the application right the first time matters.
Once his ITIN is issued, will Mateo’s refund come faster?
His ITIN must be in place before his Form 1040NR can be fully processed and his over-withheld FIRPTA tax — the money held back when a foreign person sells U.S. real estate — refunded. Getting the ITIN right and early is what frees the refund.
Can ITINCAA certify Mateo’s passport so he doesn’t mail the original?
Not in-house at the moment — see the service note below. We prepare and coordinate the full application and point you to a trusted, IRS-approved Certifying Acceptance Agent for the passport step, or guide you to certify it at a U.S. embassy or the issuing authority.
Get your ITIN handled by people who do it daily
The real worry underneath “how long does an ITIN take” is usually “will my money and my filing be sorted in time?” Fair thing to want handled by someone who does it daily. ITINCAA prepares and coordinates ITIN and Form W-7 applications and files the 1040 or 1040NR that goes with them — built to clear the IRS the first time, not the third. If you’re staring at a calendar like Mateo, book a consultation at www.itincaa.com and let’s get it moving.
American citizen or green-card holder abroad rather than a foreign national? Your path is different — start with U.S. tax for expats at ustax4expats.com. For general U.S. personal-tax questions, taxandaccountinghub.com is the sister resource.
| A quick note on how we work right now
Our IRS Certifying Acceptance Agent (CAA) agreement is temporarily paused, so for now we don’t certify passports, verify original identification documents, or issue the Form W-7 Certificate of Accuracy in-house. That doesn’t slow your ITIN down. We handle the full advisory and coordination and prepare and file your 1040 or 1040NR. For the passport step, we refer you to a trusted, IRS-approved Certifying Acceptance Agent within our professional network — or guide you if you’d rather certify at your local U.S. embassy or consulate or the passport-issuing authority. We expect to resume our own CAA certification services in early 2027. |
This article is general information about U.S. nonresident tax, IRS notices, and ITINs — not personalized tax, legal, or financial advice. Tax rules and figures change and depend on your individual situation. Always confirm current rules and speak with a qualified professional before acting. ITINCAA is happy to help.
