Tools / Regulatory tracker / US outbound investment rules (31 CFR part 850)
Regulatory tracker · United States · Investment screening
US outbound investment rules (31 CFR part 850)
Notification or prohibition of US investment in AI and semiconductor businesses in countries of concern; new rules proposed.
In force Rules in force since 2 January 2025. Treasury proposed replacement regulations on 26 October 2026; comments due 7 December 2026.
What it does
The rule in brief
Treasury's Outbound Investment Security Program requires US persons to notify, and prohibits some, transactions involving persons of a country of concern engaged in semiconductors and microelectronics, quantum technologies and AI systems. On 26 October 2026 Treasury proposed regulations implementing the Comprehensive Outbound Investment National Security Act (Title VIII of the Defense Production Act), carrying over definitions and concepts from the current rules and adding applicability dates.
Timeline
Key dates
| Date | What happens |
|---|---|
| 2 January 2025 | Final rule takes effect |
| 26 October 2026 | Proposed rule published |
| 7 December 2026 | Comments on the proposed rule due (ahead) |
Found automatically
Recent official documents
Found on the Federal Register; the summary above was last reviewed on 27 October 2026.
- Outbound Investment Security Program Regulations Federal Register · 91 FR 67396
Primary sources
Read it at source
- Outbound Investment Security Program Regulations (proposed rule), 91 FR 67396 (26 Oct 2026) Federal Register
- Provisions Pertaining to U.S. Investments in Certain National Security Technologies, 89 FR 90398 (15 Nov 2024) Federal Register
Cite as: InfraCompute regulatory tracker, “US outbound investment rules (31 CFR part 850)”, checked 27 October 2026, https://www.infracompute.co.uk/tools/regulatory-tracker/us-outbound-investment.
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Method
Each entry is written from the official text and the government, regulator or legislature pages listed above, never from secondary commentary. New documents on the Federal Register are picked up automatically and listed here. Status and dates can change after the review date, so check the source before relying on it. General information drawn from public filings. It is not legal advice on any transaction, and using this page does not create a lawyer-client relationship. Views are personal.
