ITIN Guides: Form W-7, Documents, Renewal and International Filing
Focused, source-backed guides for the ITIN questions people search most often — from renewal and supporting documents to overseas applications, processing time and FIRPTA property transactions.
Browse ITIN guides
Each guide answers one distinct search intent and links back to the current IRS source.
ITIN Renewal
When an ITIN expires, when it must be renewed and how to complete Form W-7 for renewal.
02ITIN Supporting Documents
Passport rules, the 13 accepted document types, certified copies, dependent evidence and CAA limits.
03Apply for an ITIN from Abroad
Overseas mail and CAA options, certified-copy rules and current IRS processing guidance.
04ITIN Processing Time
Current 7-week and 9–11-week IRS guidance, notices and supporting-document return timing.
05Form W-7 Exceptions
When a federal tax return may not need to be attached and why exception documentation must match IRS rules.
06ITIN for Foreign Property Buyers & Sellers
ITIN and TIN issues connected with FIRPTA withholding, Forms 8288/8288-A and U.S. real-property transactions.
Use a guide when you already know the question
If you are still unsure whether you need an ITIN at all, begin with the ITIN application process and ITIN requirements. If you already know the issue — for example an expired ITIN, passport concern or overseas application — use the focused guide above.
Each guide links to the current IRS source so you can verify the rule directly.
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