Updated 45Z Rules Shift Biofuel Incentives Toward Feedstocks

Clearer 45Z rules favor U.S. oilseeds, but final RFS volumes remain critical to locking in demand.

20160602_072042.jpg

These photos are from an ARPA-E event hosted by Danforth, the Department of Energy, and the University of Arizona. At the time, this was the world’s largest robot conducting research on sorghum as an enhanced biofuel crop. (2025)

Tony St. James

NASHVILLE, Tenn. (RFD NEWS) — Federal guidance on the 45Z Clean Fuel Production Tax Credit now more clearly steers biofuel incentives toward U.S.-grown crops, strengthening demand signals for domestic agriculture while narrowing eligibility for imported alternatives. Updated Treasury proposals implement changes enacted in the One Big Beautiful Bill Act (OBBBA) and clarify how the credit will function through 2029.

The revised guidance, to be published Wednesday in the Federal Register, prioritizes North American feedstocks, including U.S. soybeans and canola, while limiting eligibility for fuels made from imported waste oils such as used cooking oil and tallow. Industry groups say that change realigns biofuel policy with farm production rather than overseas sourcing.

A key shift is the removal of indirect land use change penalties from carbon scoring. That adjustment materially improves the economics for soy-based biofuels, effectively increasing the value of the credit and expanding eligibility across more oilseed pathways.

The update also underscores that 45Z works best alongside a strong Renewable Fuel Standard. Without complementary blending targets, the tax credit alone may not fully translate into sustained demand growth.

Farm-Level Takeaway: Clearer 45Z rules favor U.S. oilseeds, but final RFS volumes remain critical to locking in demand.
Tony St. James, RFD NEWS Markets Specialist
Related Stories
Australia’s expanding harvest and global oversupply are keeping wheat and barley prices capped, though canola markets may hold firmer on shifting oilseed demand.
Bioethanol continues to gain ground as the bridge fuel connecting agriculture, aviation, and maritime industries in the global shift toward lower-carbon energy.
Expanding bioethanol use strengthens rural economies, supports farm markets, and positions U.S. agriculture at the center of global low-carbon trade.
Brooks York with Agri-Sompo joined us to discuss this year’s harvest price calculations and what they could mean for producers nationwide.
Corn and wheat inspections outpaced last year, but soybean movement remains seasonally active yet behind, keeping basis and freight dynamics in focus by corridor.
API said it stands ready to work with Congress to develop a balanced approach to E15 legislation that promotes fuel choice, supports investment certainty, and contributes to a stable and fair marketplace for American consumers.
Lawmakers are pressing for answers on how Washington’s “managed trade” approach — keeping leverage through long-term tariffs — will affect farmers, global markets, and future export opportunities.
In the meantime, Senate Majority Leader John Thune is asking that farmers be allowed to use marketing assistance loans to help stay afloat.
Understanding how these tax provisions interact will be key for farmers planning long-term equipment purchases or transfers within the family.

Tony St. James joined the RFD-TV talent team in August 2024, bringing a wealth of experience and a fresh perspective to RFD-TV and Rural Radio Channel 147 Sirius XM. In addition to his role as Market Specialist (collaborating with Scott “The Cow Guy” Shellady to provide radio and TV audiences with the latest updates on ag commodity markets), he hosts “Rural America Live” and serves as talent for trade shows.

LATEST STORIES BY THIS AUTHOR:

New SDRP funding and expanded loss programs give producers additional tools to rebuild cash flow and stabilize operations after two years of severe weather losses.
The new WOTUS proposal narrows federal jurisdiction, restores key agricultural exclusions, and gives farmers clearer permitting rules after years of regulatory uncertainty.
Here is a regional snapshot of harvest pace, crop conditions, logistics, and livestock economics across U.S. agriculture for the week of Monday, November 17, 2025.
Ethanol markets remain mixed — weaker production and blend rates are being partially balanced by stronger exports as winter demand patterns take shape.
Tariff relief may soften grocery prices, but it also intensifies competition for U.S. fruit, vegetable, and beef producers as cheaper imports regain market share.
Strong U.S. yields and steady demand leave most major crops well supplied, keeping price pressure in place unless usage strengthens or weather shifts outlooks.