The American Jobs Creation Act of 2004¹ authorized a new nonrefundable income tax credit for biodiesel fuels² which is actually the sum of two credits³ – the “biodiesel mixture credit”⁴ and the “biodiesel credit.”⁵ The resulting credit is treated as a general business credit.⁶ The biodiesel fuels credit is added to the list of qualified business credits that qualify for a deduction if they remain unused at the end of the applicable carryforward period.⁷