For IRS verification, what type of documentation must be provided?

Providing a document or letter verifying an Individual Taxpayer Identification Number (ITIN) is crucial for IRS verification. The ITIN is a tax processing number that is issued to individuals who are required to have a U.S. taxpayer identification number but do not have a Social Security number. Since it is specifically designed for tax purposes, verification of the ITIN is directly relevant to ensuring compliance with tax laws and regulations. This documentation confirms the individual's identification with the IRS, allowing for proper processing and adherence to tax obligations.

Other types of documentation, such as a birth certificate, an employment verification letter, or a bank statement, do not provide direct evidence of an individual's ITIN status. While these documents might serve various purposes in identity verification or employment matters, they are not specific to the IRS's needs for tax-related identification and processing. Thus, the requirement for a document or letter verifying the ITIN is essential for those specifically needing to demonstrate their tax identification status to the IRS.