Beginning January 1, 2027, defense contractors will no longer be able to sell the Pentagon magnets, tantalum, or tungsten products that were mined, refined, or separated in China, Russia, North Korea, or Iran, even if the finished component itself was manufactured somewhere else entirely. That single regulatory change, written into the Defense Federal Acquisition Regulation Supplement under 10 U.S.C. § 4872, moves the compliance boundary from the final stage of production all the way back to the mine. For neodymium-iron-boron magnets specifically, the rule reaches from the mining of neodymium, iron, and boron through the production of the finished magnet. Samarium-cobalt magnets, tantalum metals, and tungsten products face parallel restrictions.
Today's rule, in effect through December 31, 2026, only restricts magnets melted or produced in a covered country. Companies have been able to source raw material from China as long as final melting or production happened elsewhere. That workaround closes on January 1.
The Restriction Took Six Years to Build
The upstream expansion did not arrive overnight. The 2019 NDAA created the original restriction, covering samarium-cobalt magnets, neodymium-iron-boron magnets, tungsten metal powder, and tungsten heavy alloy melted or produced in a covered country. The 2020 NDAA extended the restriction to National Defense Stockpile sales and added tantalum. The 2021 NDAA expanded the restriction upstream to cover materials mined, refined, or separated in a covered country but delayed implementation of that broader version. The 2024 NDAA, under Section 854 of Public Law 118-31, set the current deadline. That deadline is January 1, 2027.
Congress has kept tightening the rule with each cycle instead of loosening it. That trajectory was reinforced by an executive order President Trump signed this summer, "Securing America's Defense Supply Chains and Ensuring Domestic Acquisition of Critical Materials." Beginning on the same January 1 deadline, the order requires any contractor seeking a waiver under the statute to submit a formal mitigation plan identifying the noncompliant source, documenting efforts already made to obtain compliant material, and setting a hard timeline for removing it. Simply asserting that no qualified domestic alternative exists will not be enough. Contractors must show active, funded, ongoing efforts to qualify one.
China Still Controls Most of the Supply Chain
The restriction arrives against a market structure that has barely shifted. China controls roughly 85% to 90% of global rare earth separation and refining capacity, a concentration that has held steady despite more than a decade of U.S. and allied investment aimed at reducing it. Opening a new Western mine does not solve the compliance problem on its own, since mining capacity, separation capacity, metallization, and finished magnet production are four distinct steps, and material can still fail the DFARS test if it passes through a covered country at any point upstream.
Some domestic capacity is coming online. Projects backed by U.S. investment are targeting several hundred tonnes of rare earth metal output annually by the end of 2027, scaling toward higher volumes in subsequent phases, and separate ventures are pursuing rare earth extraction from industrial waste streams and international feedstock deals, an approach already visible in a U.S.-backed South African project extracting magnet-grade rare earths from phosphogypsum waste rather than mining new ore. The Defense Logistics Agency has also expanded recovery of rare earth elements like neodymium through its own stockpile recycling programs, part of a broader push to reclaim strategic materials from existing defense inventories, not just new mining. None of that capacity comes close to matching defense-scale demand yet, and most of it is still commissioning, scaling, or working through qualification. Very little of it is delivering traceable, compliant material today.
A Second Clock Is Running in Parallel
A separate and less predictable deadline sits just 52 days before the DFARS rule takes effect. China suspended a sweeping package of rare earth export controls for one year following an October 2025 trade agreement, and that suspension expires November 10, 2026. If Beijing lets it lapse without renewal, licensing requirements and extraterritorial provisions covering a wider list of rare earth elements would automatically return. Separately, China's April 2025 export controls on seven elements, including dysprosium, terbium, and yttrium, never went on pause and remain in force today.
China has continued imposing narrower, targeted restrictions on specific companies throughout 2026 even while the broader suspension held, and trade publications tracking the issue describe the situation as genuinely unresolved rather than a formality either side is likely to simply extend. For defense contractors, that uncertainty compounds the DFARS deadline rather than replacing it. Even a full renewal of China's suspension would not change what the DFARS rule requires on January 1, since that deadline is set by U.S. law, not by anything China decides.
What This Means for Procurement Planning
For companies supplying the Department of War, the practical questions are no longer abstract. Contractors need documented provenance for every covered material in a magnet, tantalum, or tungsten component, tracing back through alloying, metallization, separation, and mining, not just the country where final assembly happened. Existing supply agreements negotiated years ago, before these restrictions were written, may not have been built to produce that documentation at all. Qualifying a new domestic or allied supplier can take years once permitting, financing, construction, and product qualification are factored in. That means the compliance clock and the industrial-capacity clock are moving at fundamentally different speeds, a mismatch already playing out across critical mineral supply chains more broadly, including the gallium and germanium shortages that followed a separate round of Chinese export restrictions.
Waivers remain available under the statute, but the new executive order raises the bar for using one, and a waiver granted today is not guaranteed to survive the mitigation-plan requirements attached to it after January 1. Companies that assumed they had more runway because gallium and germanium do not become "covered materials" until December 18, 2027, should note that magnets, tantalum, and tungsten are on a faster clock entirely.
For defense-sector procurement teams building 2027 budgets now, the rare earth supply chain has stopped being a sourcing question handled by a single buyer and become a capital-planning and legal-documentation problem that touches contracts, qualification testing, and, increasingly, geopolitics none of them control.
