Doctrine by topic · DGT Observatory

Fuel: DGT doctrinal evolution

How the DGT's position on this topic has evolved, and the rulings it rests on.

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How the DGT's position has evolved

Stable position Medium confidence 15 rulings · 2014–2026

Current position

Hydrogen is included in the Hydrocarbons Tax if its purpose is to serve as fuel, an additive, or to increase the volume of other fuels, even if it does not appear in the list of CN codes. Its commercialization requires authorization from the Ministry of Finance to determine the tax rate. The production of this product is classified as manufacturing, requiring registration in the Territorial Registry.

The DGT's position has shifted from focusing on the quantification of biogas energy content and its treatment in cogeneration, to addressing the nature of hydrogen as a fuel. No single evolutionary line is observed, as the rulings deal with different matters such as the use of subsidized diesel, benefits in kind, or aviation exemptions, culminating in the inclusion of hydrogen.

Turning points

  1. V0212-26

    Includes hydrogen in the tax if it is intended to be fuel or an additive, regardless of its CN code, and requires authorization for its commercialization.

Analysis based on 15 of 15 rulings with a stated position. Updated 26 September 2026.

Rulings on this topic

15
V0212-26 4 Feb 2026

Hydrogen intended as fuel additive falls under Hydrocarbons Tax

SG de Impuestos Especiales y de Tributos sobre el Comercio Exterior y sobre el Medio Ambiente
impuesto sobre hidrocarburosámbito objetivocarburanteaditivo para carburantesfabricación Ley 38/1992, de 28 de diciembre, de Impuestos EspecialesReal Decreto 1165/1995, de 7 de julio, por el que se aprueba el Reglamento de los Impuestos Especiales
Affects CompanyExpat · Non-residentIndividual
V2336-25 2 Dec 2025

Gasohol bonificado cannot be used in a truck, even for internal company use

SG de Impuestos Especiales y de Tributos sobre el Comercio Exterior y sobre el Medio Ambiente
gasóleo bonificadovehículo especialvehículo ordinariotractocamióntipo impositivo reducido Ley 38/1992 de Impuestos EspecialesReal Decreto 2822/1998 del Reglamento General de Vehículos
Affects CompanyExpat · Non-residentIndividual
V0896-24 23 Apr 2024

Subsidised diesel may be used in machinery not authorised for use on public roads

SG de Impuestos Especiales y de Tributos sobre el Comercio Exterior y sobre el Medio Ambiente
gasóleo bonificadoimpuestos especialesvehículos especialesvías y terrenos públicosconfiguración objetiva Ley 38/1992 de Impuestos EspecialesLGT — Ley 58/2003 General Tributaria art. 89.1
Affects CompanyExpat · Non-residentIndividual
V1758-23 19 Jun 2023

Partial refund of Hydrocarbon Tax may be requested for diesel used in forestry

SG de Impuestos Especiales y de Tributos sobre el Comercio Exterior y sobre el Medio Ambiente
impuesto sobre hidrocarburosgasóleo a tipo reducidodevolución parcialsilviculturacarburante Ley 38/1992, de 28 de diciembre, de Impuestos EspecialesLGT — Ley 58/2003 General Tributaria art. 12.2
Affects CompanyExpat · Non-residentIndividual
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