Overview

• The agency notified 145,000 taxpayers that it holds U.S. account information and made it accessible through the Nuestra Parte portal using CUIT and a tax password.
• Following an interface error that briefly displayed records, ARCA removed the content and said only each taxpayer could view their own data within private profiles.
• ARCA said no fiscal secrecy was breached, and tax advisers indicated the slip does not endanger the U.S.-Argentina automatic information exchange.
• The records were transmitted under the IGA 1 framework covering data from January 1, 2023, including identity details, account numbers, financial institution identifiers, and gross interest when above $10.
• ARCA plans investigations into high-value transfers in October 2025, and 2024 IRS data is expected to be processed next for the portal.