How the DGT's position has evolved
Current position
Mercantile mergers that comply with article 76.1 of the LIS (Corporate Income Tax Law) may benefit from the tax neutrality regime. Under this regime, the absorbing company subrogates into the negative taxable bases of the transferring company, respecting the limits of articles 84 and 84.2 of the LIS. The existence of negative bases does not invalidate the application of the regime, provided that the operation responds to valid economic motives and does not have the primary purpose of obtaining a tax advantage.
The DGT's position has remained constant over time. Since 2007, the administration has required valid economic motives to prevent fraud and allows the subrogation of negative taxable bases. The most recent rulings simply update the regulatory references to the LIS and RD-law 5/2023, maintaining the same doctrinal core.
Analysis based on 83 of 95 rulings with a stated position. Updated 10 September 2026.