Mergers by absorption of 100% subsidiaries may maintain tax neutrality

Corporate restructurings involving the total absorption of a subsidiary by its parent company have been subject to analysis by the Tax Administration. The central issue was to determine whether the existence of negative tax bases in the company that disappears prevents the application of the tax neutrality regime provided for in the Corporate Income Tax Law (LIS).

What the DGT has resolved

The Directorate General of Taxes (DGT) has determined that, if the operation is carried out within a commercial scope and complies with the provisions of article 76.1 c) of the LIS, the merger by absorption of a 100% subsidiary can qualify for the tax neutrality regime. Under this scenario, the absorbing company will subrogate into the negative tax bases of the absorbed company, respecting the limits established in articles 84.2 and the sixteenth transitional provision 7.b) of the LIS.

The ruling clarifies that the presence of negative tax bases does not invalidate the application of this regime, provided that two fundamental conditions are met:

• The merger must strengthen the economic activity of the entity.
• The operation must not have the predominant purpose of taking advantage of said bases or be part of a liquidation plan.

Furthermore, it is warned that the regime will not be applicable if it is detected that the main objective of the restructuring is tax fraud or evasion.

What it means for you

For business groups managing restructuring processes, this resolution provides legal certainty regarding the feasibility of integrating subsidiaries without losing the tax benefit of accumulated negative tax bases. This allows the consolidation of structures to be tax-efficient, provided that the operation responds to business logic and not merely to a loss optimization strategy.

What should be done

In a merger by absorption process, it is necessary to document the economic reasons that justify the operation. The entity must be able to demonstrate that the restructuring seeks to strengthen the activity and does not constitute a mere mechanism for taking advantage of negative tax bases or a liquidation maneuver. It is fundamental to evaluate compliance with the subrogation limits provided for in current regulations before executing the operation.