How the DGT's position has evolved
Current position
Classification in the IAE (Tax on Economic Activities) is determined by the nature of the activity, allowing for different classifications depending on the service provided, such as consulting or training. In the case of service stations, the activity is commercial rather than that of a commercial mediator, requiring several headings. For photovoltaic production, the taxable event begins with the effective production of energy, excluding previous phases of construction or licensing.
There is no coherent doctrinal evolution because the rulings deal with taxable events of entirely different natures (IAE, ITP, ISD, IRPF). Each ruling resolves an isolated legal scenario without establishing a line of change or a trend in the interpretation of a single concept.
Analysis based on 55 of 58 rulings with a stated position. Updated 19 July 2026.