The One Big Beautiful Bill Act preserved Section 45X through 2030 but added FEOC material assistance thresholds that restructure what qualifying US battery production looks like from 2026 onward. The production-side subsidy is intact. The demand-side consumer stimulus is gone.
The One Big Beautiful Bill Act, signed into law on 4 July 2025, left the Section 45X advanced manufacturing production credit largely intact -- a markedly different outcome from earlier House drafts that proposed significant modification. Under the OBBBA as under the original IRA, the phase-down for battery components begins in 2030 at 75 percent of the base credit, dropping to 50 percent in 2031, 25 percent in 2032, and full elimination in 2033. Wind component credits were eliminated for sales after December 2027. Battery components were explicitly spared that accelerated sunsetting. The base credit for battery cells remains USD 35 per kilowatt-hour of qualifying production. Battery modules carry USD 10 per kilowatt-hour. Critical mineral production credits covering lithium, graphite, nickel, cobalt, and others carry no phase-out under the OBBBA.
The critical new condition is the material assistance cost ratio, abbreviated MACR, which requires that a minimum percentage of direct material costs for qualifying 45X components come from non-Prohibited Foreign Entity sources. For battery components, the required non-PFE ratio is 60 percent for calendar year 2026. This rises to 70 percent in 2027, 80 percent in 2028, and 85 percent by 2030. China, Russia, Iran, and North Korea define the PFE category. Chinese entities control the processing of most battery-grade lithium, cobalt, and graphite globally. At the material level, China processes the vast majority of battery-grade nickel sulphate, cobalt sulphate, and spherical graphite. Making the 60 percent non-PFE MACR work in 2026 requires US cell manufacturers to have already diversified cathode and anode material sourcing away from Chinese processors -- a supply chain reconfiguration that requires 12 to 36 months of qualification work at automotive production standards to complete.
For tax years beginning after 31 December 2026, at least 65 percent of the direct material cost of an integrated component -- where a primary component is assembled into a secondary component at the same manufacturing facility -- must come from primary components manufactured in the United States. This applies when a cell manufacturer claims 45X on both electrode active material and the cell incorporating that material in the same facility. The 65 percent domestic primary component rule effectively requires US-produced anode and cathode active material to qualify for stacked 45X credits on both material and cell production from 2027 onward. It makes the non-Chinese anode and cathode supply chain not optional for 45X optimisation -- it is the credit structure that the integrated component rule enforces at the facility level.
IRS Notice 2026-15, published in early 2026, clarified the MACR calculation methodology but left several key questions unresolved: how to determine PFE status from equity and debt ownership thresholds for public companies, how the effective control standard operates in practice, and how 10-year recapture rules apply when a taxpayer loses PFE compliance mid-programme. The Department of Treasury is required to release safe harbour MACR tables by 31 December 2026. Until those tables are published, taxpayers rely on supplier certifications and IRS Notice 2025-08. Failure to comply subjects taxpayers to a 20 percent accuracy-related penalty for overstating non-PFE material content. IRS can assess MACR deficiencies for up to six years after filing. Both the financial penalty and the audit exposure period are material for battery investment programme budgeting.
| Component | 45X Credit Rate | 2026 MACR | 2030 MACR | Phase-down |
|---|---|---|---|---|
| Battery cells | USD 35/kWh | 60% non-PFE | 85% non-PFE | 2030-2033 |
| Battery modules | USD 10/kWh | 60% non-PFE | 85% non-PFE | 2030-2033 |
| Electrode active materials | USD 35/kWh | 60% non-PFE | 85% non-PFE | 2030-2033 |
| Critical minerals (Li, Co, Ni, graphite) | Varies by mineral | FEOC restriction applies | FEOC restriction applies | No phase-out |
| Wind components | Varies | N/A | N/A | Eliminated Dec 2027 |
Section 30D clean vehicle tax credits were terminated on 30 September 2025, seven years ahead of the original IRA schedule. Section 45W commercial clean vehicle credits were simultaneously eliminated. Section 25C energy efficient home improvement credits and Section 25D residential clean energy credits terminated 31 December 2025. Section 30C alternative fuel vehicle refuelling property credits terminate for property placed in service after 30 June 2026. The combined effect is the removal of the consumer demand stimulus framework that had been the primary retail demand driver for EV adoption in the US market since 2022.
US battery manufacturers operating under 45X now produce into a market where the production-side subsidy is intact but the demand-side consumer stimulus is removed. The supply chain investment that 30D and 45X together catalysed -- USD 48.3 billion in investment and 62,700 jobs as of June 2025 according to the Center for Climate and Energy Solutions -- was justified on the combined demand-and-supply economics. With 30D removed, US EV manufacturers selling into the US consumer market face a USD 7,500 per vehicle increase in effective vehicle pricing relative to the 30D-enabled baseline, at a moment when Chinese EV manufacturers are expanding their price advantages through LFP technology adoption and scale. The 45X credit at USD 35 per kilowatt-hour for battery cells does not compensate for lost consumer demand pull. It reduces domestic battery production cost. It does not create the demand that consumes that production.
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A US cell manufacturer producing NMC cells at 60 kilowatt-hours per cell kilogram-hour of graphite anode material and sourcing graphite from Syrah Vidalia at USD 20 to USD 21 per kilogram rather than Chinese spherical graphite at USD 10 to USD 11 per kilogram pays a graphite premium of USD 0.54 to USD 0.60 per kilowatt-hour of cell production. At the same manufacturer sourcing NMC cathode precursor from POSCO Future M IRA-eligible at USD 12.40 to USD 14.80 per kilogram rather than Chinese pCAM at USD 9.80 per kilogram, the pCAM premium on 70 to 90 kilograms of cathode active material per kilowatt-hour of cell capacity is USD 0.18 to USD 0.36 per kilowatt-hour. Total IRA-eligible premium on anode and cathode material at current pricing is approximately USD 0.72 to USD 0.96 per kilowatt-hour of cell production. Against the USD 35 per kilowatt-hour 45X credit, the premium is absorbed with USD 34.04 to USD 34.28 per kilowatt-hour net credit remaining. The IRA-eligible material premium is financially manageable for programmes structured around 45X. It is not manageable for programmes that must source IRA-eligible material without the credit to recover cost.
"The 45X credit at USD 35 per kilowatt-hour for battery cells is still commercially meaningful at current cell pricing of USD 74 to USD 84 per kilowatt-hour globally. It represents a 42 to 47 percent cost offset on Chinese-equivalent cell pricing for US-produced cells qualifying under 45X at full non-PFE MACR compliance. That is enough to make US cell production cost-competitive with Chinese supply for automotive programmes that value FEOC compliance, domestic sourcing, and supply chain resilience over lowest available cell price. The 30D termination reduces the US EV market demand that those cells serve. The 45X credit does not fix a demand problem. It only helps the supply cost equation. A US battery industry built on the assumption that 30D and 45X together create a self-sustaining domestic battery ecosystem now has to operate with the supply side intact and the demand side removed. That is a structurally more difficult commercial position than the original IRA intent."
IRS published Notice 2026-15 clarifying the material assistance cost ratio calculation methodology for Section 45X claimants subject to OBBBA Prohibited Foreign Entity restrictions, confirming that MACR is calculated as the percentage of total direct material costs attributable to non-PFE sources, while leaving key PFE determination questions including equity and debt ownership thresholds for public companies to be addressed in forthcoming proposed regulations. Comments on Notice 2026-15 closed 30 March 2026.
Center for Climate and Energy Solutions confirmed that as of June 2025, an estimated 62,700 jobs had been created and USD 48.3 billion invested in battery and EV manufacturing linked to 30D and 45X tax credits, providing the baseline for assessing the economic impact of 30D termination and OBBBA FEOC restrictions on the domestic battery investment pipeline.
The One Big Beautiful Bill Act was signed into law on 4 July 2025, preserving Section 45X battery component production credits through 2030 while adding FEOC material assistance cost ratio requirements and terminating Section 30D clean vehicle consumer tax credits on 30 September 2025, the most significant revision to IRA battery and EV tax credit structure since the Inflation Reduction Act was enacted in August 2022.
Earlier House drafts of the OBBBA had proposed accelerated sunsetting or modification of Section 45X battery component credits, which battery industry trade groups including the Battery Innovation Council and BlueGreen Alliance opposed. The final bill signed in July 2025 preserved 45X in its IRA form for battery components, sparing battery manufacturers from the accelerated sunsetting applied to wind and solar generation credits in the final legislation.