Effective today, April 1, biodiesel blend incentive requirements will increase from B17 to B20 in Illinois, marking the final step in the implementation of Illinois’ B20 incentive passed by the state legislature in 2022.

According to the Illinois Soybean Association, this means every gallon of diesel that contains 20% biodiesel will be exempt from 6.25% sales taxes. There is an 11% percent blend rate during the winter months.

While the biodiesel industry overall saw a decrease in use by 924 million gallons or 45% last year (according to U.S. Department of Energy data), Illinois saw an increase of biodiesel use of 10 million gallons or 5%, due to the incentive (according to Illinois Department of Revenue data).

Clean Fuels Alliance America Director of State Governmental Affairs Jeff Earl said the Illinois incentive is a clear example of how consistent state policy can accelerate clean fuel use while delivering real economic benefits. “Illinois has created a model that supports farmers, strengthens fuel markets and improves air quality all at the same time,” said Earl. “This B20 milestone is not just a win for clean fuels; it’s a win for rural communities, the environment and energy security.”