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Common Reasons ITIN Applications Get Delayed

Guide of the most common reasons ITIN applications get delayed & how to avoid them. Learn about document errors, W-7 mistakes & prevent IRS holds.

Reviewed by Nolly.com’s Certifying Acceptance Agent teamUpdated 3 min read

Applying for an ITIN can feel simple, but many applications get delayed because of preventable mistakes. These delays can last months, especially during busy IRS periods. At Nolly.com, we help clients avoid these issues by preparing complete, accurate applications.

Here are the most common reasons ITIN applications get delayed and how to avoid them.

Missing or Incorrect Identification

The IRS must verify who you are. If your identification is unclear or incorrect, your application will be delayed.

Common issues include:

  • Expired passports
  • Blurry photocopies
  • Names that don’t match the W-7 form
  • Missing birth information
  • Damaged documents

Your passport should be current, readable, and consistent with all other forms.

Missing Supporting Tax Document

An ITIN cannot be issued unless you provide a valid tax document that explains your need for the number. Examples include:

  • A 1040NR tax return
  • FIRPTA documents for a real estate sale
  • A letter from a withholding agent
  • A financial document requiring an ITIN

If this document is missing, the IRS will hold your application.

Using an Outdated W-7 Form

Many applicants download old versions of the W-7 form online. The IRS rejects outdated forms.

At Nolly.com, we always use the latest approved version.

Errors on the W-7 Form

Even small errors cause delays. Examples include:

  • Wrong reason box selected
  • Missing signatures
  • Incorrect dates
  • Mismatched information
  • Blank fields

The IRS does not process incomplete forms.

Mailing Original Passports

If you apply by yourself, you must mail your original passport to the IRS.

This often leads to:

  • Long postal delays
  • Lost documents
  • Application holds
  • Stress and travel problems

With Nolly.com, your identity is verified on a video call with a Certifying Acceptance Agent, so you don’t send your passport to the IRS. We verify your identity on a video call as Certified Acceptance Agents.

Incomplete Foreign Status Documentation

The IRS must confirm that you are a non-U.S. resident. If anything is unclear, the application is paused. A valid passport usually satisfies this requirement, but only if submitted correctly.

Busy Filing Seasons

During tax season, IRS processing slows down. Filing early or using a fast submission method helps reduce wait times.

How Nolly.com Prevents Delays

We reduce delays by:

  • Checking all documents
  • Verifying identity properly
  • Completing accurate W-7 forms
  • Ensuring supporting tax documents are included
  • Tracking application progress

This gives your ITIN the best chance of being approved quickly.

Final Thoughts

ITIN delays usually happen because of avoidable mistakes. Working with a certified professional ensures your application is complete and accurate.

Start your ITIN application with Nolly.com today. We help clients worldwide avoid delays and receive their ITIN as fast as possible.

Published December 6, 2025. General information, not tax advice. Nolly Services Inc is a private company and is not part of the IRS.