What are the FEOC requirements for 45X tax credits?

Section 45X (Advanced Manufacturing) has the most comprehensive FEOC restrictions. Three core requirements apply: (A) Ownership Prohibition: cannot claim 45X if classified as a PFE, effective for tax years after July 4, 2025. (B) Material Assistance Restrictions: manufacturers cannot receive assistance from PFEs, with component-specific MACR thresholds that escalate annually (e.g., Battery: 60% in 2026, 65% in 2027, 70% in 2028, 80% in 2029, 85% in 2030+). (C) Effective Control Prohibition: no credit for components produced through effective control by an SFE.

How do I determine if a supplier is a Foreign Entity of Concern?

Use a two-step analysis. Step 1: Determine if the supplier is a Specified Foreign Entity (SFE): entities that are governments of China, Russia, North Korea, or Iran, incorporated in covered nations, owned/controlled by covered governments (>50%), or on U.S. restricted lists (OFAC SDN, Commerce Entity List, UFLPA). Step 2: Determine if the supplier is a Foreign-Influenced Entity (FIE): triggered if an SFE can appoint board members, a single SFE owns ≥25% of stock/voting rights, multiple SFEs collectively own ≥40%, SFEs hold ≥15% of outstanding debt, or entity allocates >10% of non-goods payments to a single SFE.

What is the Material Assistance Cost Ratio (MACR)?

MACR measures how much of your project comes from PFE sources. For Qualified Facilities (45Y/48E): MACR = (Total Direct Costs - PFE Costs) ÷ Total Direct Costs. For Eligible Components (45X): MACR = (Total Direct Material Costs - PFE Material Costs) ÷ Total Direct Material Costs. Example for Battery Manufacturing (2026): threshold is 60%. If total costs are $1M and PFE costs are $350K, MACR = 65%, which is compliant. The IRS must issue safe harbor tables by December 31, 2026.

What documentation do I need for FEOC compliance?

Supplier certifications must include the supplier's EIN or foreign government ID number, be signed under penalties of perjury, and state that property was not produced by a PFE. Certifications must be retained by both supplier and taxpayer for ≥6 years. Documentation needed includes: shareholder agreements and board appointment rights for ownership/FIE status; supply chain audit trails and cost allocation worksheets for MACR; technology licensing agreements for effective control analysis; and physical work test documentation for beginning of construction.

How do the new PFE rules differ from FEOC rules?

They are the same framework with different terminology. FEOC (Foreign Entity of Concern) is the umbrella term referring to the overall regulatory framework. PFE (Prohibited Foreign Entity) is the specific legal status that triggers credit disqualification, defined in OBBBA Section 7701(a)(51). PFE has two categories: Specified Foreign Entity (SFE) for direct connections to covered nations, and Foreign-Influenced Entity (FIE) for indirect connections through SFE ties. The IRA 2022 had limited FEOC rules only for EV battery supply chains; OBBBA 2025 expanded the PFE framework to virtually all clean energy credits.

FEOC Compliance

What is a Prohibited Foreign Entity?

Understanding the difference between Specified Foreign Entities (SFE) and Foreign-Influenced Entities (FIE).

Before anything else, the entity claiming the credit must not itself be a Prohibited Foreign Entity (PFE). A PFE is either a Specified Foreign Entity (SFE) or a Foreign-Influenced Entity (FIE).

Type	Definition & Triggers
SFESpecified Foreign Entity	Directly tied to a covered nation: incorporated in or controlled by a covered nation (China, Russia, Iran, North Korea); ≥50% government ownership; or listed on OFAC SDN, Chinese Military Companies list, Commerce Entity List, or UFLPA
FIEForeign-Influenced Entity	Material relationship to an SFE: ≥25% single SFE equity, ≥40% aggregate SFE equity, ≥15% SFE debt, or effective control via licensing

For most U.S.-based developers, identifying an SFE is straightforward. Covered nations include China, Russia, Iran, and North Korea. Either classification block equals a PFE, which disqualifies the entity from claiming clean energy tax credits for any tax year in which that status applies.

But not every case is easy. Multinational manufacturers with layered ownership and Chinese licensing arrangements are far harder to untangle.

A single contaminated component in your supply chain can eliminate 100% of your tax credits on a $100–200M project. This isn't a penalty. It's a kill switch.

Hidden Ownership Is No Longer a Defense

The law is still vague on exactly how to trace ownership through layered corporate structures. What is clear: not knowing is no longer a defense. You have to prove where your materials came from.