What the form is for

Form W-7 is used to apply for or renew an IRS individual taxpayer identification number. The IRS describes an ITIN as a nine-digit number for people who need a U.S. federal taxpayer identification number but do not have and are not eligible for an SSN.

Why Tax Paperwork stops here

  • ITIN packages can require original documents or certified copies from issuing agencies.
  • Many applications are attached to a federal tax return unless an exception applies.
  • Eligibility, document validity, country facts, dependent facts, and exception categories are high-risk support topics.

Tax Paperwork should not ask users to upload passports, birth certificates, national IDs, tax returns, or W-7 packets into support or an account.

Current status

Research and education only. A future W-7 product would need counsel review, tax technical review, identity-document handling policy, vendor review, support training, and clear routing to official IRS or acceptance-agent channels.

Primary sources IRS About Form W-7 IRS Instructions for Form W-7 IRS ITIN Supporting Documents