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ITIN Guide

ITIN Application Guide

Apply for an ITIN step by step. Complete Form W-7, gather documents, submit with tax return. Mail to IRS ITIN Operation, Austin TX 78714.

Apply for an ITIN by completing Form W-7, gathering identity documents, and submitting with a federal tax return to the IRS. Mail to: IRS ITIN Operation, PO Box 149342, Austin, TX 78714-9342. Processing takes 7-11 weeks. Use a Certifying Acceptance Agent (CAA) to keep your original passport.

Steps

ITIN Application Steps

  1. Determine eligibility — You need a US tax ID but cannot get an SSN
  2. Complete Form W-7 — Select correct reason code
  3. Prepare tax return — Form 1040 or 1040-NR
  4. Gather ID documents — Passport or 2 alternative IDs
  5. Submit — Mail, CAA, or IRS office
  6. Wait 7-11 weeks — IRS mails ITIN to your address

Where to Mail

IRS ITIN Operation PO Box 149342 Austin, TX 78714-9342

Common Rejections

Common Rejection Reasons

| Reason | Fix | |--------|-----| | Missing tax return | Include 1040/1040-NR | | Wrong reason code | Match your situation | | Photocopies instead of originals | Send originals or use CAA | | Missing signature | Sign Form W-7 | | Name mismatch | Use exact passport name |

Cost

ITIN Application Cost

| Method | Cost | |--------|------| | IRS direct | $0 | | CAA | $50-275 | | Tax preparer | $150-500 | | ein.so | $197 standard / $297 express |

Related: ITIN cost | ITIN number | How to get ITIN

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Frequently Asked Questions

How do I apply for an ITIN?

Complete Form W-7, attach a tax return and ID documents, mail to IRS ITIN Operation, Austin TX 78714. Processing: 7-11 weeks.

What documents do I need?

Passport (preferred, standalone) or 2 from: national ID, birth certificate, driver license, US state ID, voter registration card.

How long does the application take?

7-11 weeks. Peak season (Jan-April) takes longer. No expedited option from IRS.

Can I apply online?

No. ITIN applications must be submitted by mail, through a CAA, or in-person at an IRS office.

What if my application is rejected?

Fix the issue noted in the rejection letter and resubmit. Common issues: missing tax return, wrong documents, name mismatch.

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