1.  Generally. 

1-A.  Special biodiesel rate. 

1-B.  Generally; rates.  Except as provided in section 3204‑A, an excise tax is levied and imposed on all suppliers of distillates sold, on all retailers of low-energy fuel sold and on all users of special fuel used in this State for each gallon of distillate at the rate of 31.2¢ per gallon. Tax rates for each gallon of low-energy fuel are based on the British Thermal Unit, referred to in this subsection as "BTU," energy content for each fuel as based on gasoline gallon equivalents or the comparable measure for distillates. The gasoline gallon equivalent is the amount of alternative fuel that equals the BTU energy content of one gallon of gasoline. For purposes of this subsection, "base rate" means the rate in effect for gasoline or diesel on July 1st of each year. A biodiesel blend containing less than 90% biodiesel fuel is subject to the rate of tax imposed on diesel.  

2.  Legal incidence of tax.  Special fuel may be taxed only once under this section. The tax imposed by this section is declared to be a levy and assessment on the ultimate consumer, and other persons levied and assessed pursuant to this chapter are agents of the State for the collection of the tax. The supplier and retailer are primarily responsible for paying the tax. When a supplier sells and delivers to a licensed exporter wholly for exportation from the State or to another supplier in the State, the purchasing supplier is primarily responsible for paying the tax. If a supplier or retailer includes the tax on a bill to a customer, it must be shown as a separate line item and identified as "Maine special fuel tax."  

3.  Delivery by supplier or retailer.  When distillates are delivered by a supplier to a consumer or to a retail outlet, those distillates are deemed to have been sold within the meaning of this chapter, even if the retail outlet is owned in whole or in part by the supplier.  

4.  Highway Fund.  All taxes and fines collected under this chapter must be credited to the Highway Fund, except that beginning July 1, 2009 and ending June 30, 2023, the Treasurer of State shall deposit monthly into the TransCap Trust Fund established in Title 30‑A, section 6006‑G 7.5% of the excise tax imposed under subsection 1‑B, and beginning July 1, 2023, the Treasurer of State shall deposit monthly into the TransCap Trust Fund established in Title 30‑A, section 6006‑G 10.25% of the excise tax imposed under subsection 1‑B.  

5.  Allowance for certain losses of undyed distillates.  An allowance of not more than 1/4 of 1% from the amount of undyed distillates received by a licensed supplier, plus 1/4 of 1% on all transfers in vessels, tank cars or full tank vehicle loads by the licensed supplier in the regular course of business from one of the licensed supplier's places of business to another of the licensed supplier's places of business within the State, may be allowed by the assessor to cover the loss through shrinkage, evaporation or handling sustained by the licensed supplier. The total allowance for these losses must be supported by documentation satisfactory to the assessor and may not exceed 1/2 of 1% of the receipts by the licensed supplier. The allowance must be calculated on an annual basis. A further deduction may not be allowed unless the assessor is satisfied upon definite proof submitted to the assessor that a further deduction should be allowed for a loss sustained through fire, accident or some unavoidable calamity.  

6.  Allowance for certain losses of propane.  An allowance of not more than 1% from the amount of propane received by the retailer may be allowed by the assessor to cover the loss through shrinkage, evaporation or handling sustained by the retailer. The total allowance for these losses must be supported by documentation satisfactory to the assessor. The allowance must be calculated on an annual basis. A further deduction may not be allowed unless the assessor is satisfied upon definite proof submitted to the assessor that a further deduction should be allowed for a loss sustained through fire, accident or some unavoidable calamity.