Source library

Primary sources

Everything on this site traces back to one of these documents. Each shows the date we last checked it. Statute links go to the Legal Information Institute's copy of the U.S. Code and e-CFR, which carry the 2025 amendments.

Statute (Internal Revenue Code)

Regulations

IRS guidance and notices

IRS forms and instructions

DocumentPublisherLast checked
About Form 3468, Investment CreditIRS
Instructions for Form 3468 (2025)IRS
About Form 8835, Renewable Electricity Production CreditIRS
About Form 7211, Clean Electricity Production CreditIRS
About Form 8933, Carbon Oxide Sequestration CreditIRS
About Form 7213, Nuclear Power Production CreditIRS
About Form 7210, Clean Hydrogen Production CreditIRS
About Form 7207, Advanced Manufacturing Production CreditIRS
About Form 7218, Clean Fuel Production CreditIRS
About Form 8911, Alternative Fuel Vehicle Refueling Property CreditIRS
About Form 3800, General Business CreditIRS
Instructions for Form 3800 (2025)IRS
Form 3800 (2025), General Business Credit (PDF)IRS
Instructions for Form 8835 (2025)IRS
About Form 7220, Prevailing Wage and Apprenticeship (PWA) Verification and CorrectionsIRS
About Form 4255, Certain Credit Recapture, Excessive Payments, and PenaltiesIRS
Instructions for Form 7207 (2025), Advanced Manufacturing Production CreditIRS
Instructions for Form 7210 (2025), Clean Hydrogen Production CreditIRS
Instructions for Form 7211 (2025), Clean Electricity Production CreditIRS
Instructions for Form 7213 (2025), Nuclear Power Production CreditIRS
Instructions for Form 7218 (2025), Clean Fuel Production CreditIRS
Instructions for Form 8864 (2025), Biodiesel, Renewable Diesel, or Sustainable Aviation Fuels CreditIRS
Instructions for Form 8911 (2025), Alternative Fuel Vehicle Refueling Property CreditIRS
Instructions for Form 8933 (2025), Carbon Oxide Sequestration CreditIRS

Market reports (estimates, not law)