Buying §45X Advanced Manufacturing Credits: What a Corporate Tax Buyer Should Check

Published October 29, 2026. §45X credits come from U.S. manufacturers of solar, wind, inverter, battery and critical mineral components. They are transferable under §6418. For a buyer, they are a different diligence exercise than a project tax credit. For the basics, see our 45X overview.

What you are buying

A manufacturer determines the credit annually, based on eligible components it produced and sold to an unrelated person during the year, and reports it on Form 7207 (IRS instructions). The credit can be sold in whole or in part (§6418). Only the credit for the year can be sold, not a carryforward (§6418(f)(1)(C)).

Where §45X stands in 2026 (post-OBBBA)

Item	Rule
General phase-out	Components sold in 2030: 75%; 2031: 50%; 2032: 25%; after 2032: 0% (Form 7207 instructions; §45X(b)(3)).
Wind components	No credit for wind components produced and sold after December 31, 2027.
Applicable critical minerals	Phase-down for minerals produced after 2030: 75% in 2031, 50% in 2032, 25% in 2033, 0% after.
Metallurgical coal	Eligible, but not for coal produced after December 31, 2029.
Foreign-entity limits	No credit if the taxpayer is a specified foreign entity or foreign-influenced entity; no credit for components with material assistance from a PFE, for tax years beginning after July 4, 2025.

What is different about a §45X purchase

• No §50 recapture. The basis-reduction and recapture rules in §6418(g)(3) apply to the ITCs (§§48, 48C, 48E), not to §45X. Your risk is allowance, not recapture.
• The risk is the MACR. Each component sold needs its own material assistance cost ratio against the threshold. Notice 2026-15 gives interim safe harbors. If a component fails, the credit for that component is not allowed. See foreign-entity risk for buyers.
• The seller's status matters. Ask for support that the manufacturer is not a specified foreign entity or foreign-influenced entity.
• Buyer eligibility. The credit cannot be transferred to a buyer that is a specified foreign entity (§6418(g)(5)).
• Volume builds over the year. Credits accrue as components are sold. Payment must still be in cash within the window in Treas. Reg. §1.6418-1(f). See transfer deadlines.

Diligence list

1. Registration number and the Form 7207 calculation by component type.
2. Evidence of U.S. production and of sales to unrelated persons.
3. MACR work papers and supplier certifications for each component sold.
4. Seller status representations and an indemnity from a creditworthy party.
5. Your own capacity under §38(c) and estimated tax timing (estimated tax).

Market context (third-party data)

Crux reports that §45X represented about 6.5% of H1 2026 credit transfer volume, just behind §45Z at 6.7%, and attributes lower manufacturing volumes in part to PFE risk in 2026-vintage credits. The pricing and volume outlook is a third-party view, and pricing depends on the seller, vintage and risk allocation; see pricing explained. For pass-through buyers, see S corporations and partnerships.

Educational information only, not tax, legal or investment advice, and no outcome is promised. Figures and rules were checked against the cited sources on October 29, 2026; confirm with your CPA and counsel before acting. See our disclaimer.