How the DGT's position has evolved
Current position
The acquiring entity may offset the negative tax bases of the transferor under the limitations of article 90.3 of the TRLIS. In the case of financial expenses from debt used to acquire entities that join a tax group, an additional limit of 30% of the acquiring entity's operating profit is applied, excluding the profit of the acquired entity. This special limit is applied with priority before applying the general limit of 30% of the group's operating profit or one million euros.
The DGT's position remains stable regarding the substantive requirements for the special regime for mergers and demergers, which focus on the existence of valid economic reasons. The evolution shows a shift from validating the operability of mergers toward technical precision regarding the offsetting of tax bases and the application of specific limits to financial expenses in the acquisition of entities for tax groups.
Turning points
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Introduces the application of an additional limit of 30% of the acquiring entity's operating profit for financial expenses from debt used to acquire entities that join a tax group.
Analysis based on 10 of 10 rulings with a stated position. Updated 29 September 2026.