ITIN Processing Time Estimator — How Long Does an ITIN Take?

There is no calculation to argue with here, and that is the point. The IRS publishes exactly one processing figure for Form W-7, on its Individual Taxpayer Identification Number page: “Allow 7 weeks for us to notify you about your ITIN application status. It can take 9-11weeks if it’s tax season (January 15 to April 30) or if you applied from overseas.” Everything this tool shows is that sentence applied to your own dates, plus the two other clocks the IRS mentions elsewhere.

The window. The estimator tests your receipt date against the filing-season range — 15 January to 30 April, both ends included — and against whether the package came from outside the United States. Either condition moves you from the 7-week figure to the 9-to-11-week one. Both conditions together do not stack: the IRS gives one extended window, not two. In days, that is 49 days for the standard window, and 63 to 77 days for the extended one, added to your receipt date as whole calendar days.

Why calendar days, not timestamps. Date tools break in a predictable way: someone in Colombo loads a page whose arithmetic ran in a US timezone, and every date lands a day early. The module behind this page never touches a millisecond timestamp. It converts each date to a day number with Howard Hinnant’s civil-date algorithm, does integer arithmetic, and converts back. A second implementation built on Date.UTC runs alongside it and the two are compared; the calculator says so when they agree, and warns loudly if they ever do not.

The document clock. If you posted original documents, the IRS returns them to the address on line 2 of the W-7 and asks you to contact it if they have not arrived within 60 days. That runs independently of the decision letter, and often finishes first — a passport arriving back is not a decision. The estimator only shows this clock for routes where the IRS ends up holding your originals; at a Taxpayer Assistance Center, a VITA site or a Certifying Acceptance Agent, documents are authenticated and handed back at the appointment.

What the submission route does not change. The IRS publishes no per-route processing time, so this tool invents none. A courier shortens the leg to Austin, not the review inside it. A CAA does not buy you a faster queue. What those routes change is the probability of a CP566 request for more information — and, with a CAA, who receives it.

The escalation date. One number on this page is not an IRS figure: the 4-week point past the published window at which the tool suggests the Taxpayer Advocate Service instead of the ordinary help line. That threshold is this site’s editorial judgement, labelled as such wherever it appears, and it exists so the normal channel gets a fair chance first.

The published window depends on two things only: when the IRS received the package, and whether it came from outside the United States.

Source: IRS, Individual Taxpayer Identification Number, page last updated 2025-10-28. Separate 60-day clock on returning original documents. Read on 2026-08-13.

• IRS — Individual Taxpayer Identification Number (processing times, document return, status phone numbers)
• IRS — How to apply for an ITIN (the six submission routes and the Austin addresses)
• IRS — Renew an ITIN (three-year non-use expiry rule)
• IRS — About Form W-7 and its instructions
• IRS — Understanding your CP566 notice (45-day reply window)
• Taxpayer Advocate Service — independent help for stuck cases (877-777-4778)

Processing figures on this page were read from the IRS sources above on 2026-08-13; the IRS page itself was last updated 2025-10-28. The published window changes from time to time, so this page is rechecked each January before filing season opens and whenever the IRS revises the figure. This is an estimator built on published timeframes — it is not a status check, it does not contact the IRS, and it cannot tell you anything about your specific application.