A tax credit deal that looked airtight in November can fall apart in January over three letters. FEOC.
Buyers who spent 2024 chasing 45X and 48E credits at attractive discounts are now walking away from otherwise clean transactions. Not because the credits are bad. Because the effective control language buried on page forty of a supply agreement no longer passes muster.
Here’s the thing. The Foreign Entity of Concern rules were always in the Inflation Reduction Act. What changed is enforcement posture, Treasury guidance clarity, and the willingness of tax insurers to underwrite around ambiguity. In 2026, that willingness has thinned to almost nothing.
The market repriced quietly. Most sellers didn’t notice until their first failed close.
What “Effective Control” Actually Means Now
The statute is short. The interpretation is not.
A project loses FEOC eligibility if a prohibited foreign entity holds effective control over any material aspect of production. That includes licensing arrangements, board influence, technology transfer agreements, and offtake structures that give a covered entity meaningful say over how, when, or where the product moves.
You don’t need majority ownership to trigger it. A single licensing clause granting a Chinese counterparty veto rights over manufacturing changes can do it. So can a service agreement where a covered entity supplies the operating software and controls updates.
Sellers who assumed their cap table was clean are discovering that operational entanglements matter just as much. Sometimes more.
The Treasury’s clarifications through late 2025 pushed the definition further into functional territory. It’s no longer enough to point at ownership percentages. Reviewers now ask who actually makes the day-to-day decisions, who holds the technical know-how, and who benefits economically from the way production is structured. If the answer to any of those questions points to a covered entity, the credit is at risk.
Where Deals Are Actually Breaking
Three patterns dominate the failed transactions this cycle.
Battery cell and cathode projects tied to Chinese equipment licensors keep hitting walls when diligence teams find royalty structures that look less like a license and more like ongoing operational control. Solar module deals collapse when polysilicon supply contracts include quality control provisions that give the upstream supplier approval rights over end-use.
Critical minerals is the messiest category. A processing facility can be American-owned, American-operated, and American-financed, and still fail FEOC review because the feedstock arrives under a long-term contract with pricing tied to a Chinese benchmark and delivery terms that give the seller substitution rights.
Buyers are pricing this risk hard. Discounts that were 8 to 10 cents on the dollar in 2024 have widened to 14 to 18 cents where any FEOC uncertainty exists. Some deals aren’t getting done at any price.
Insurance carriers have added specific FEOC exclusions to policies that would have covered the same fact patterns two years ago. That shifts the entire residual risk back to the buyer, which is exactly why buyers are so aggressive on price now.
The Diligence Questions That Now Matter
Sophisticated buyers have rebuilt their questionnaires around effective control, not equity ownership.
They want to see every agreement that touches production. Licensing terms, service contracts, joint development arrangements, IP agreements, and any document that grants a third party influence over operational decisions. They read the fine print on remedies. A termination right in the hands of a covered entity is often the tell.
For sellers, the practical implication is uncomfortable. Contracts signed in 2022 or 2023, when the FEOC framework was still evolving, need re-papering before credits can move. That takes months. It sometimes requires renegotiating with the very counterparties whose involvement created the problem.
Reunion’s team has written extensively on how the prohibited foreign entity framework applies across the specific credit sections, which is worth reading before you paper any new offtake.
How Sellers Are Structuring Around It
The cleanest sellers are doing three things.
They’re rebuilding supply chains with documented FEOC-compliant alternatives, even at higher input cost, because the credit premium more than pays for the switch. They’re rewriting licensing agreements to strip out any provision that could be read as effective control, replacing veto rights with notice requirements and consent rights with consultation rights.
And they’re getting reps and warranties insurance early, before the buyer’s diligence starts, so the coverage terms and any exclusions are known upfront.
The sellers still trying to paper over old structures with contractual reps alone are the ones getting stuck. Buyers can tell the difference within an hour of reading the data room. Once trust breaks on one document, the entire transaction slows down or dies.
Conclusion
FEOC scrutiny isn’t going to relax. If anything, the next round of Treasury guidance is expected to tighten the definition of effective control further, particularly around technology licensing.
For buyers, that means the current discount premium on any FEOC-adjacent credit is likely to hold or widen. For sellers, it means the projects that clean up their operational structures now will trade at meaningfully better economics than those that wait.
The quiet deal-killer isn’t going away. It’s becoming the loudest question in the room.
