How the DGT's position has evolved
Current position
To qualify for the special merger regime, the operation must be carried out within the commercial sphere and comply with the requirements of Article 83.1 of the TRLIS (Corporate Income Tax Law). The existence of tax loss carryforwards in the absorbed company does not prevent the application of the regime, provided that this is not the predominant purpose. The operation must have valid economic reasons and must not have fraud or tax evasion as its main objective.
The DGT's position remains stable regarding the substantive requirements for the special merger regime. Throughout the rulings, it has been reiterated that the existence of tax loss carryforwards or the lack of change in the shareholder's equity does not invalidate the operation, provided that valid economic reasons exist and commercial regulations are met.
Turning points
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Specifies that the absorbing company assumes the obligation of installment payments of the absorbed company if the latter exceeded 6 million euros in turnover, regardless of whether it qualifies for the special regime.
Analysis based on 20 of 21 rulings with a stated position. Updated 25 September 2026.