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The consultant asks whether a 20% deduction can be claimed for energy-efficient wall renovations carried out in 2024 in their 2026 tax return. The DGT confirms this is possible if the reduction in heating and cooling demand is proven via an energy efficiency certificate.
Cuestión planteada Si puede aplicarse la deducción por obras de rehabilitación energética en viviendas en la declaración de la renta correspondiente al ejercicio 2026.
Los contribuyentes pueden deducirse el 20% de las cantidades satisfechas por obras que reduzcan al menos un 7% la demanda de calefacción y refrigeración. La deducción se practica en el período impositivo en que se expida el certificado posterior a las obras, siempre que este se emita antes del 1 de enero de 2027. Si el certificado se expide en un año posterior al pago de las obras, la deducción se puede practicar en el año del pago. El certificado previo a las obras es válido si se expidió en un plazo máximo de dos años antes del inicio de las mismas.
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