* Acceptance Agents are denoted with an asterisk. * Check local telephone directory for nearest location. The following is a public list of Acceptance Agents for Forms W-7. Taxpayers and their representatives should review these changes, which are further explained in these Frequently Asked Questions, before requesting an ITIN. Section 203 of the Protecting Americans from Tax Hikes Act, enacted on December 18, 2015, included provisions that affect the Individual Taxpayer Identification Number (ITIN) application process.