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Free ITIN resources: everything you need to apply with confidence

Free checklists, guides and tools for every stage of your ITIN application.

Get the Free Checklist →

The ITIN document checklistDownload free →

W-7 reason finderTry the tool →

What happens on your CAA interviewSee how it works →

Getting started Documents After you apply

Getting started

GuideWhat is an ITIN?

ToolDo I need an ITIN?

GuideITIN vs SSN

GuideHow long does it take?

Documents & forms

ChecklistDocument checklist by reason

GuidePassports and certified copies

GuideForm W-7, box by box

GuideTax return or exception?

After you apply

GuideTracking your application

TemplateYour ITIN letter (CP565)

GuideIf the IRS asks for more

GuideRenewing an expired ITIN

The business side of your US setup

Wyoming vs Texas LLCFees, privacy, annual duties and who each state suits.

EIN without an SSN or ITINThe IRS route for foreign owners.

Form 5472 and the $25,000 penaltyWhat a foreign-owned LLC must file, even with no revenue.

US bank account requirementsWhat Mercury, Relay and Stripe ask for.

LLC, EIN, bank, ITIN: the orderWhich step comes first.

Get the ITIN document checklist, our most used resource

Know exactly what to prepare before your interview.

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Quick answers

Do I need an ITIN to open a US bank account?

Can I apply without sending my passport?

How long is an ITIN valid?

Can my spouse and children apply with me?

Read the full FAQ

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Home/Resources

Free ITIN resources: everything you need to apply with confidence

Free resources, checklists, guides and tools for every stage of your ITIN application, from your first question to your IRS letter.

Get the Free Checklist

Apply for My ITIN

Getting startedDo you need an ITIN, and why

Documents & formsWhat to prepare and how

After you applyTracking, letters and renewal

The ITIN document checklist

A one-page list of everything to prepare, based on your reason for applying.

Download free →

W-7 reason finder

Answer five questions to find the application reason that fits your situation.

Try the tool →

What happens on your CAA interview

What happens on the video call, step by step.

See how it works →

01

Getting started

Resources to start with if you are new to ITINs.

What is an ITIN?

The US tax number for people who can't get an SSN.

Do I need an ITIN?

A quick self-check before you take the full eligibility check.

Which number applies to you, and why it matters.

How long does it take?

Our preparation time plus typical IRS processing.

02

Documents & forms

Document resources: what to prepare, and how we certify it.

Document checklist by reason

Exactly what to prepare for your W-7 reason.

Passports and certified copies

How identity documents are verified by a CAA.

Form W-7, box by box

Every section of the form, in plain English.

Tax return or exception?

When you need a return, and when you don't.

03

After you apply

Resources for tracking, IRS letters and keeping your ITIN active.

Tracking your application

What happens at the IRS after we submit.

Your ITIN letter (CP565)

How to read the letter that confirms your ITIN.

If the IRS asks for more

What a request letter means and how we respond.

Renewing an expired ITIN

When ITINs expire and how to renew yours.

LLC, EIN and banking

Resources for setting up and running the business side of your US presence.

Wyoming vs Texas LLC

Fees, privacy, annual duties and who each state suits.

EIN without an SSN or ITIN

The IRS route for foreign owners, step by step.

Form 5472 and the $25,000 penalty

What a foreign-owned single-member LLC must file, even with no revenue.

US bank account requirements checklist

What Mercury, Relay and Stripe ask for, and what a real operating address means.

BOI reporting: where it stands

Why US-created LLCs are currently exempt, as of October 2026.

LLC, EIN, bank account, ITIN: the order

Which step comes first and when an ITIN is actually needed.

Supporting documents for an ITIN application

ITIN document checklist Valid passportReason for applyingTax return or exceptionSupporting documents

Get the ITIN document checklist, our most used resource

Know exactly what to prepare before your interview. We’ll email it to you along with tips that prevent the most common rejections.

No spam. One email with your checklist, then an occasional guide. Unsubscribe anytime.

Quick answers to common questions about these resources

Short answers to what applicants ask us most about our resources. For anything else, ask a real person. Sources: IRS: Form W-7 instructions · IRS: How to apply for an ITIN.

Read the full FAQ

Do I need an ITIN to open a US bank account?

Can I apply without sending my passport?

How long is an ITIN valid?

Can my spouse and children apply with me?

Do I need a US address?

What if my application is rejected?

Ready for the next step after the resources? We'll take it from here.

Start with a free eligibility check. We prepare, certify and submit your application, and follow up with the IRS.

Chat on WhatsApp