Bis 50 collection
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Export Controls

Sep 30, 2025

2 minutes

A Guide to the BIS ‘50% Rule’: Its Global Impacts on Subsidiaries, Case Studies and More

By Ryan Bacic
The arrival this week of the U.S. Bureau and Industry’s (BIS) 50% ownership rule stands to be a game-changer for export-control enforcement and compliance screening.

The rule mandates that subsidiaries that are owned 50% or more by entities on the BIS Entity List or Military End-User list will be subjected to the same trade restrictions as those parents.

Throughout this year, the Kharon Brief had chronicled the potential for such a policy from a number of angles, from the news developments to case studies to the impacts on subsidiaries in China and around the world.

Want to get fully up to speed on the new 50% rule? Explore our best related coverage below.

The news, scale and impacts

Matt Axelrod, the former assistant secretary for export enforcement at BIS, told Kharon in a May webinar that the possibility of a 50% ownership rule had “been a debate internally for a while.”

Without one, Axelrod explained, it was “easy” for “an Entity-Listed company to set up a different subsidiary, and that’s not caught by the Entity List.” With such a rule, the responsibilities of compliance screening now grow:

Case studies

As BIS outlined Tuesday in its interim final rule, its 50% ownership threshold will apply in the aggregate, and it will count direct and indirect ownership by one or more U.S.-listed foreign parties. But even minority ownership by listed actors is a red flag, BIS said.

That all can make the tricky math of risk assessment trickier. Prepare with the examples in the three pieces below:

The latest designations

The Entity List also got longer this month, with 32 new additions. The focus was once again on China’s tech and military—just like the kinds of parties the 50% rule will sweep up, too. More from the Kharon Brief:
Learn more about Kharon's industry-leading BIS 50% Rule ("Affiliates Rule") Solutions