What the Rule Requires
Independent guides to the final USDA feedstock rule, the official FD-CIC calculator, and the line between what is required, what is optional, and what is merely claimed.
USDA FD-CIC Final Rule & Official Tools
On June 25, 2026, the U.S. Department of Agriculture released the final rule on Technical Guidelines for the Production of Regenerative Agricultural Biofuel Feedstocks. These official resources establish the guidelines for quantifying, reporting, and verifying the carbon intensity (CI) of regenerative biofuel feedstock commodity crops grown in the United States.
USDA Technical Guidelines Page
The official USDA landing page for the regenerative biofuel feedstock final rule, including background, scope, and implementation details.
usda.govFinal Rule Text — Federal Register
The complete final rule as published in the Federal Register on June 29, 2026 (Document 2026-13092), establishing the technical guidelines for regenerative agricultural biofuel feedstocks.
federalregister.govDownload Official FD-CIC Tool (v1)
The official USDA Feedstock Carbon Intensity Calculator tool, version 1, distributed as a ZIP archive for local installation and use.
usda.gov — ZIP downloadDownload FD-CIC User Manual (June 2026)
The official USDA FD-CIC user guide, dated June 2026, providing step-by-step instructions for operating the Feedstock Carbon Intensity Calculator.
usda.gov — PDF downloadDownload Official T-DISC Tool (v1)
The official USDA T-DISC tool, version 1, distributed as a ZIP archive for supply-chain traceability and transactional data invoicing.
usda.gov — ZIP downloadIRS 45Z Clean Fuel Production Credit
The official IRS page for the Clean Fuel Production Credit (Section 45Z), the federal tax credit tied to low-carbon fuel production and feedstock carbon intensity.
irs.govFlagship Guides
Upcoming Analysis
Draft topics in the research queue. These pages are marked noindex until expert review is complete.