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HB 1663

Relating to a credit or refund for diesel fuel taxes paid on diesel fuel used in this state by auxiliary power units or power take-off equipment.

89th Legislature (2025) Introduced by Trent Ashby

Establishes diesel fuel tax credits or refunds for Texas operators using fuel in auxiliary power units and power take-off equipment on commercial vehicles.

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Bill Summary · HB 1663

Legislative bill overview

HB 1663 would establish a tax credit or refund mechanism for diesel fuel taxes paid on fuel used in auxiliary power units (APUs) or power take-off (PTO) equipment in Texas. These systems are commonly used in commercial vehicles like trucks and trailers to power heating, cooling, and other equipment without running the main engine. The bill aims to provide financial relief to operators who pay state diesel taxes on fuel consumed by these ancillary systems.

Why is this important

Commercial trucking and transportation companies operate under tight profit margins, and fuel costs represent a significant operational expense. By allowing tax credits or refunds for fuel used in APUs and PTO systems, the bill could reduce operating costs for the trucking industry and potentially improve competitiveness. Additionally, APU usage can reduce fuel consumption and emissions compared to idling main engines, so this incentive could align economic and environmental benefits.

Potential points of contention

  • Revenue impact: The bill would reduce state diesel tax revenue without clear projections of how substantial this loss might be, raising questions about impact on transportation infrastructure funding
  • Implementation complexity: Determining which fuel was consumed by APUs versus main engines requires tracking and verification mechanisms that could be administratively burdensome and subject to fraud
  • Beneficiary specificity: The benefit primarily flows to commercial trucking operations rather than individual taxpayers, raising equity concerns about which industries receive tax preferences

Compiled from official sources — confirm details with the bill’s official record.

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