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A taxpayer queried whether they could apply multiple tax deductions for energy efficiency improvements to their primary residence. The Directorate General for Taxes (DGT) ruled that these deductions cannot be applied simultaneously; instead, the taxpayer must choose one or the other, depending on whether they meet the requirements for reducing heating/cooling demand or for reducing non-renewable primary energy consumption.
Cuestión planteada - Posibilidad de aplicarse las deducciones por obras para la mejora de la eficiencia energética en viviendas previstas en los apartados 1 y 2 de la disposición adicional 50ª de la LIRPF.
No es posible aplicar las dos deducciones por una misma obra, debiendo aplicarse la que corresponda según los requisitos acreditados por el certificado energético. La deducción del 20% requiere reducir la demanda de calefacción y refrigeración en al menos un 7%, mientras que la del 40% exige reducir el consumo de energía primaria no renovable en un 30% o alcanzar una calificación energética 'A' o 'B'. En caso de tributación conjunta, los límites de la base máxima de deducción no se multiplican por el número de miembros de la unidad familiar.
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