HomeLaw & LegalCorporate LawWhat is Hart-Scott-Rodino Act?
Law & Legal·2 min·Updated Mar 15, 2026

What is Hart-Scott-Rodino Act?

Hart-Scott-Rodino Antitrust Improvements Act

Quick Answer

The Hart-Scott-Rodino Act is a U.S. law that requires companies to notify the government before merging or acquiring another company. This law helps prevent anti-competitive practices by allowing regulators to review proposed mergers.

Overview

The Hart-Scott-Rodino Act, enacted in 1976, is designed to promote fair competition by regulating mergers and acquisitions. Under this law, companies must file a notification with the Federal Trade Commission (FTC) and the Department of Justice (DOJ) before completing certain transactions. This filing includes detailed information about the companies involved and the proposed deal, allowing regulators time to assess potential impacts on market competition. Once the notification is filed, there is a waiting period during which the FTC and DOJ can review the proposed merger. If they find that the merger could harm competition, they have the authority to challenge the merger in court or request more information. For example, when AT&T attempted to acquire Time Warner, the merger was closely scrutinized under the Hart-Scott-Rodino Act to ensure it would not create unfair market dominance. This act is significant in the realm of Corporate Law because it aims to maintain a competitive marketplace, which benefits consumers through better prices and choices. The Hart-Scott-Rodino Act serves as a proactive measure, allowing regulators to intervene before a merger can negatively affect competition, thereby fostering a healthier economy.


Frequently Asked Questions

Generally, transactions that involve a certain monetary threshold, which is adjusted annually, require notification. This includes mergers, acquisitions, and joint ventures where the parties meet the size thresholds specified by the law.
Failure to comply with the Hart-Scott-Rodino Act can result in legal penalties, including fines and the potential for the merger or acquisition to be blocked. Companies may also face additional scrutiny from regulators if they attempt to proceed without proper notification.
While the Hart-Scott-Rodino Act primarily targets larger mergers and acquisitions, small businesses can also be affected if they are involved in transactions that meet the notification thresholds. It ensures that even small transactions are evaluated for their potential impact on competition.