Last Updated on May 14, 2026 by Arnaud Collignon Collect all information required to register your Financial Institution with the IRS FATCA portal and obtain your Global Intermediary Identification Number (GIIN). 1FI Information 2Branches & EAG 3RO & POC 4Submit Before you begin: Gather your FI’s legal incorporation documents, local tax ID, and mailing address. … Continue reading IRS GIIN Registration Service — FATCA Application for Financial Institutions