How the DGT's position has evolved
Current position
To qualify for the special spin-off regime, the segregated assets must constitute a line of business understood as an autonomous economic unit capable of functioning by its own means. This requires a differentiated business organization and an autonomous economic exploitation previously identifiable within the transferring company. The operation must respond to valid economic motives and must not have the primary purpose of tax fraud or evasion.
The DGT's position remains constant in requiring that the segregated assets constitute a line of business with its own organization. Throughout the rulings, the interpretation has been reinforced that the mere transfer of isolated assets or real estate does not constitute an autonomous economic unit. The doctrine has not varied, always focusing on the need for a prior differentiated structure.
Turning points
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Specifies that the concept of a line of business does not require meeting the requirements of economic activity under IRPF (Personal Income Tax), but does require a differentiated business organization.
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Establishes that the transfer of isolated real estate for subsequent leasing does not constitute a line of business due to the lack of a differentiated organization of material and human resources.
Analysis based on 17 of 19 rulings with a stated position. Updated 25 September 2026.