CBOT soybean oil falls 7% as US biofuel policy uncertainty weighs on demand outlook
Key Takeaways
- •CBOT December soybean oil futures fell from 71.32 cents/lb on Aug. 20 to 66.26 cents/lb on Aug. 24, a 7.1% decline.
- •The EPA said it planned to extend the Sept. 1 deadline for refiners to prove compliance with 2025 Renewable Fuel Standard obligations.
- •Market participants estimated that pending small-refinery exemptions could release 1.2 billion to 1.8 billion RINs for compliance.
- •Biomass-based diesel RIN values fell to about $1.92 on Aug. 24, their lowest level since late April.
- •Argentine and Brazilian soybean oil prices declined less than US futures because stronger export basis levels supported physical markets.
CBOT soybean oil falls 7% as US biofuel policy uncertainty weighs on demand outlook
in Commodity News 26/08/2026
Chicago Board of Trade soybean oil futures fell more than 7% over the three trading sessions through Aug. 24, as uncertainty around US biofuel policy reduced part of the demand premium that had supported vegetable oil prices.
CBOT December soybean oil futures declined from 71.32 cents/lb on Aug. 20 to 66.26 cents/lb on Aug. 24, a decrease of 5.06 cents/lb, or 7.1%.
The decline accelerated after the US Environmental Protection Agency said it planned to extend the Sept. 1 deadline for refiners to show compliance with their 2025 Renewable Fuel Standard obligations. The EPA has not announced a new deadline, although market sources said a 30-90 day extension was under consideration.
The agency also intends to decide outstanding small-refinery exemption petitions by the end of August. Market participants estimate the exemptions could make 1.2 billion-1.8 billion RINs available for compliance, raising expectations for greater availability of biofuel credits.
Those developments triggered a sharp drop in Renewable Identification Number values, including biomass-based diesel credits, which fell to around $1.92 on Aug. 24, their weakest level since late April. Because soybean oil is a key feedstock for biodiesel and renewable diesel, the policy outlook matters directly for how much demand the market expects from the US biofuels sector, making futures particularly sensitive to changes in Renewable Fuel Standard compliance timing and RIN values.
South American basis cushions CBOT decline
The sharp futures correction was not fully reflected in Argentine and Brazilian physical soybean oil prices, as export basis levels strengthened significantly.
CBOT October soybean oil futures fell 3.2% to 67.26 cents/lb on Aug. 24, while Platts, part of S&P Global Energy, assessed Argentine soybean oil FOB Up River for October loading at $1,191.82/mt, down 66 cents/mt from Aug. 21.
The Argentine October basis strengthened 220 points to minus 1,320 points against CBOT October futures, offsetting almost the entire futures decline.
Brazilian soybean oil FOB Paranaguá for October loading was assessed at $1,196.23/mt, down $5.07/mt, while the basis strengthened 200 points to minus 1,300 points.
The price action widened the gap between US futures and South American physical soybean oil markets. While CBOT December soybean oil lost 7.1% in three sessions, much stronger FOB differentials insulated Argentine and Brazilian outright values from most of the decline.
Market participants said the contrasting moves reflected different forces in the market: US soybean oil futures were repricing uncertainty around biofuel demand, while South American physical values remained supported by export demand and regional commercial activity.
Source: Platts
