Upcoming changes to reporting requirements for economic concentrations in Argentina: Top points

The executive branch of Argentina’s government published, on November 17, 2025, Executive Order No. 810/2025 (EO) in the country’s Official Gazette. The EO appoints the principal authorities of the National Competition Authority (Autoridad Nacional de la Competencia, or ANC) on a provisional basis pending the required confirmation by the senate.

The appointment of ANC authorities under the EO marks an important starting point in companies’ compliance efforts under Argentina’s Antitrust Act (Law No. 27,442). In accordance with Section §84 of the Antitrust Act, one year after the “Commencement of operations of the ANC,” in order to fulfill Section §9 obligations, companies will be required to inform and obtain prior approval from the ANC for certain economic concentrations.

Below, we provide top points and key considerations for companies going forward.

Effective dates

After the commencement of operations of the ANC, companies will be required to obtain approvals from and report information to the department prior to consummation of certain economic concentration.

The “operations of the ANC” officially commence upon the appointment of its president, the first two members of the Antitrust Tribunal, and the investigating secretaries for both anticompetitive conduct and economic concentrations, who will begin to exercise their functions immediately upon appointment.

Once the ANC has been duly constituted and has commenced operations, and the EO has entered into force (that is, eight days from its publication in the Official Gazette), the one-year window will begin for companies to fulfill reporting obligations in accordance with the provisions of Section §9 of the Antitrust Act.

Key changes

The EO will have a significant impact on industry practice. Under the new law, notifications to and approvals by the ANC must be obtained prior to the consummation of any economic concentration. This differs from the former Antirust Act (Law No. 25,156) and the current temporary regime, which allowed reporting economic concentrations within one week after their completion.

The imminent implementation of the new prior-approval regime will require economic agents to adjust their current practices in transactions involving economic concentrations in order to remain in compliance with the new timing and pre-approval requirements established under the Antitrust Act.

For additional information, please contact the authors.