Record D4 RIN prices redraw global soybean trade
D4 RINs at $2.41 have turned U.S. biodiesel credits into a transatlantic soybean arbitrage, pulling beans to Europe and fuel back to the United States.
EIA’s June 4 data put D4 RINs at $2.41, turning soybean crush into a transatlantic arbitrage that pulls U.S. beans to Europe and fuel back to the United States. European processors can keep soymeal for livestock feed, then ship biodiesel into a U.S. market where biomass-based diesel credits have moved to record or near-record territory. EPA’s March 27 Set 2 rule then locked in the highest 2026 and 2027 renewable fuel volumes in program history, amplifying the pull through the whole oilseed complex.
How the new trade loop works
The route is simple in structure and powerful in price: import U.S. soybeans, crush them in Europe, retain the meal, and export the biodiesel to the United States. Prima CarbonZero outlined that sequence as the emerging play for European biodiesel producers, who can capture a U.S. credit market while solving a protein issue at home.
The European Union is the third-biggest soybean meal consumer and the largest importer. That leaves European crushers with a built-in domestic outlet for protein feed, while the fuel side can chase the stronger D4 value in the United States. In practice, the margin split is what redraws the flow: crushers monetize the meal, biodiesel producers monetize the credit, and livestock buyers gain local protein supply.
Why D4 RINs now dominate the crush
D4 RINs are the compliance credits generated by biomass-based diesel under the Renewable Fuel Standard, and they can be used for the biomass-based diesel, advanced biofuel and total biofuel obligations. EPA’s public RIN pages track weekly volume-weighted average prices for separated RINs, and EIA has long shown that D4 credits typically trade at a premium to D6 ethanol RINs because they satisfy more obligations.
That premium is now unusually large. By June 4, EIA showed D6 at $2.37, leaving both credits near the all-time highs set in 2021. Hydrocarbon Processing listed D4 at a record $2.26 on June 5 and $2.32 on June 6. The different readings point to the same market structure: credits are tight enough that a single gallon of biodiesel, which generates 1.5 RINs, and a gallon of renewable diesel, which generates 1.6 to 1.7 RINs, can carry more than $3.50 a gallon in credit value.
The credit can move the entire economics of the tank. When the D4 value rises, the blender, producer or trader that can capture the credit has room to bid harder for feedstock, defend a crush margin or move finished fuel into the highest-value outlet.
What changed in Washington and why the market reacted
EPA finalized its Set 2 Renewable Fuel Standard rule on March 27, 2026, setting the 2026 and 2027 volume requirements at the highest levels in program history. The agency said the standards are meant to protect investment in American corn and soybean growers, oilseed processors, and biodiesel and renewable diesel producers.
On June 12, EIA forecast record-high fuel ethanol and renewable diesel production for 2026 because of the higher blend mandates, higher gasoline and diesel prices, and added biofuel capacity. Biodiesel output is still expected to rise, but EIA expects it to remain below record highs because some production capacity has been lost. An industry estimate cited by OPIS puts required net D4 RIN generation 55% higher in 2026 and 67% higher in 2027 than in 2025.
Where soybean oil fits in the reset
USDA’s Economic Research Service shows soybean oil prices surged in spring 2021 toward record highs in 2022 as biofuel demand increased and supplies of alternative vegetable oils tightened. The same force is back in the balance sheet. USDA projects soybean oil use for biodiesel at 14.2 billion pounds in the 2025-26 marketing year and 17.8 billion pounds in 2026/27.
When biodiesel and renewable diesel demand accelerates, soybean oil loses some of its pricing independence and starts moving with RIN economics, diesel blending economics and plant utilization. In Europe, the same oil can be part of a different margin stack: crush the bean, keep the meal, ship the fuel.
What market participants are watching now
For crushers, the question is whether the meal premium in Europe stays strong enough to offset higher soybean import costs. For biodiesel producers, the key is whether D4 values stay high enough to justify exporting back into the United States rather than selling into local European channels. For livestock feed buyers, the advantage is the local meal supply that comes out of that crush, which helps reduce reliance on imported protein.
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